CN109659010B - Medical image equipment imaging protocol adjusting method and device, storage medium and equipment - Google Patents
Medical image equipment imaging protocol adjusting method and device, storage medium and equipment Download PDFInfo
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Abstract
The application relates to a medical image equipment imaging protocol adjusting method, a device, a storage medium and equipment, when the equipment imaging protocol needs to be adjusted, according to a target imaging protocol, a target index of an imaging characteristic value and adjusting priority information, characteristic value correlation coefficients corresponding to the imaging characteristic value are sequentially adjusted according to the adjusting priority, so that the imaging characteristic value meets the corresponding index, and when the imaging characteristic value behind the sequence is adjusted, the imaging characteristic value ahead the sequence is ensured to still meet the corresponding target index, so that the adjusting efficiency can be effectively improved, and the adjusting accuracy is higher.
Description
Technical Field
The present application relates to the field of medical imaging equipment technologies, and in particular, to a method and an apparatus for adjusting an imaging protocol of a medical imaging equipment, a storage medium, and a device.
Background
The medical imaging device refers to various imaging devices applied in the medical field, such as a Magnetic Resonance imaging (MR) device, a Computed Tomography (CT) device, and the like, and the medical imaging device needs to set corresponding operating parameters during operation, so that the medical imaging device can complete expected imaging operations.
The imaging protocol of prior art through adjusting medical image equipment sets up the working parameter that equipment corresponds, however, prior art mostly adjusts through artificial mode, and when medical image equipment's system and configuration information were comparatively complicated, there was the problem that efficiency is lower in the manual regulation, and made mistakes easily to cause the influence to the imaging result of equipment.
Disclosure of Invention
In view of the foregoing, there is a need to provide a method, an apparatus, a storage medium, and a device for adjusting an imaging protocol of a medical imaging device, which can improve adjustment efficiency and accuracy.
A medical imaging device imaging protocol adjustment method, comprising:
acquiring a target imaging protocol, a target index of an imaging characteristic value and adjustment priority information of medical image equipment, wherein the target imaging protocol comprises an imaging sequence and a characteristic value correlation coefficient corresponding to the imaging characteristic value, the imaging characteristic value at least comprises a first characteristic value and a second characteristic value, and the adjustment priority of the first characteristic value is higher than the adjustment priority of the second characteristic value;
acquiring a current imaging characteristic value corresponding to the imaging sequence;
when the current imaging characteristic value does not meet the target index, adjusting the first characteristic value until the first characteristic value meets the corresponding target index; after the first characteristic value is adjusted, adjusting the second characteristic value until the second characteristic value meets the corresponding target index, wherein the adjustment of the imaging characteristic value is realized by adjusting the characteristic value relation number corresponding to the imaging characteristic value;
after the second characteristic value is adjusted, if the first characteristic value does not meet the corresponding target index, returning to the step of adjusting the first characteristic value, and readjusting the first characteristic value and the second characteristic value;
and when the adjusted imaging characteristic values all meet the corresponding target indexes, or the imaging protocol adjusting process of the medical image equipment meets a preset ending condition, determining that the imaging protocol adjusting of the medical image equipment is finished.
In one embodiment, the imaging characteristic values include at least two of contrast, signal-to-noise ratio, resolution, and imaging time.
In one embodiment, any one of the following is further included:
the first item: when the current imaging characteristic value is empty, determining that the current imaging characteristic value does not meet the target index;
the second term is: and when the current imaging characteristic value is not empty, if the current imaging characteristic value is not in the range of the target index, determining that the current imaging characteristic value does not meet the target index.
In one embodiment, the adjustment process of the current imaging feature value includes any one of the following:
the first item: when the current imaging characteristic value is empty, setting a corresponding current imaging characteristic value according to the target index;
the second term is: and when the current imaging characteristic value is not empty, adjusting the current imaging characteristic value so as to enable the current imaging characteristic value to be in the range of the target index.
In one embodiment, the method further comprises the following steps:
and after the second characteristic value is adjusted, if the first characteristic value meets the corresponding target index, determining that the adjustment of the imaging protocol of the medical image equipment is completed.
In one embodiment, determining that the imaging protocol adjustment process of the medical image device satisfies a preset end condition comprises any one of:
the first item: when the imaging protocol adjusting times of the medical image equipment reach preset adjusting times, determining that the imaging protocol adjusting process meets a preset ending condition;
the second term is: when the imaging protocol adjusting time length of the medical image equipment reaches the preset adjusting time length, determining that the imaging protocol adjusting process meets the preset ending condition;
the third item: and when an adjustment ending control instruction is detected, determining that the imaging protocol adjustment process meets a preset ending condition.
In one embodiment, after determining that the imaging protocol adjustment process of the medical image device satisfies the preset end condition, the method further includes: and adjusting the first characteristic value and the second characteristic value according to the protocol adjustment historical record so that the adjusted first characteristic value meets the corresponding target index, and the adjusted second characteristic value is the value which is closest to the corresponding target index in the protocol adjustment historical record.
A medical imaging device imaging protocol adjustment apparatus, comprising:
the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring a target imaging protocol, a target index of an imaging characteristic value and adjustment priority information of medical image equipment, the target imaging protocol comprises an imaging sequence and a characteristic value correlation coefficient corresponding to the imaging characteristic value, the imaging characteristic value at least comprises a first characteristic value and a second characteristic value, and the adjustment priority of the first characteristic value is higher than that of the second characteristic value;
the second acquisition module is used for acquiring the current imaging characteristic value corresponding to the imaging sequence;
the adjusting module is used for adjusting the first characteristic value when the current imaging characteristic value does not meet the target index until the first characteristic value meets the corresponding target index; after the first characteristic value is adjusted, adjusting the second characteristic value until the second characteristic value meets the corresponding target index, wherein the adjustment of the imaging characteristic value is realized by adjusting the characteristic value relation number corresponding to the imaging characteristic value; after the second characteristic value is adjusted, if the first characteristic value does not meet the corresponding target index, returning to the step of adjusting the first characteristic value, and readjusting the first characteristic value and the second characteristic value;
and the determining module is used for determining that the imaging protocol of the medical image equipment is adjusted when the adjusted imaging characteristic values all meet the corresponding target indexes or the imaging protocol adjusting process of the medical image equipment meets a preset ending condition.
A computer device comprising a memory storing a computer program and a processor implementing the steps of the above method when executing the computer program.
A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the above-mentioned method.
According to the medical image equipment imaging protocol adjusting method, the medical image equipment imaging protocol adjusting device, the storage medium and the equipment, when the equipment imaging protocol needs to be adjusted, the characteristic value correlation coefficient corresponding to the imaging characteristic value is sequentially adjusted according to the target imaging protocol, the target index of the imaging characteristic value and the adjustment priority information, so that the imaging characteristic value meets the corresponding index, and when the imaging characteristic value behind the sequence is adjusted, the imaging characteristic value ahead of the sequence is ensured to still meet the corresponding target index, so that the adjusting efficiency can be effectively improved, and the adjusting accuracy is higher.
Drawings
FIG. 1 is a flow diagram illustrating a method for adjusting an imaging protocol of a medical imaging device in accordance with one embodiment;
FIG. 2 is a schematic flow chart illustrating the adjustment of an imaging feature value by adjusting a feature value correlation coefficient according to one embodiment;
fig. 3 is a schematic structural diagram of an imaging protocol adjusting device of the medical image equipment in one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
The medical image equipment is used in the medical field and is used for realizing human body imaging, and the human body medical image obtained by the medical image equipment can be helpful for doctors to observe, diagnose and analyze the state of an illness, so that the diagnosis efficiency and the diagnosis accuracy can be improved. Commonly used medical Imaging apparatuses include MRI (Magnetic Resonance Imaging) apparatuses, CT (Computed Tomography) apparatuses, and the like. For convenience of understanding, the technical solutions in the embodiments of the present application are explained by taking MRI equipment as an example, and it is understood that the application objects of the technical solutions in the embodiments of the present application are not limited to MRI equipment only, and may be other types of medical image equipment. In addition, the medical imaging device can be a single-modality imaging device, and can also be a multi-modality imaging device, such as a PCT-CT device, a PET-MR device, and the like.
In one embodiment, as shown in fig. 1, there is provided a medical image device imaging protocol adjustment method, comprising the steps of:
step S100, a target imaging protocol of the medical image equipment, a target index of an imaging characteristic value and adjustment priority information are obtained, the target imaging protocol comprises an imaging sequence and a characteristic value correlation coefficient corresponding to the imaging characteristic value, the imaging characteristic value at least comprises a first characteristic value and a second characteristic value, and the adjustment priority of the first characteristic value is higher than that of the second characteristic value.
The imaging sequence of the MRI apparatus refers to a combination of a radio frequency pulse and a gradient pulse having a certain bandwidth and a certain amplitude, and a commonly used imaging sequence includes: spin Echo (SE), Fast Spin Echo (FSE), gradient echo (GRE), Echo Planar (EPI), Inversion Recovery (IR), etc., wherein the inversion recovery mainly includes two types of water suppression (FLAIR) and fat Suppression (STIR). The imaging characteristics differ for different sequences, for example: spin echo Sequences (SE) have low requirements on magnetic field homogeneity, provide reliable high contrast images, but are slow to scan; whereas gradient echo sequences (FFE, GRE) scan significantly faster than spin echo Sequences (SE) and are very sensitive to bleeding.
For an MRI device, its corresponding target imaging protocol includes an imaging sequence, i.e., what type of imaging sequence is used to achieve MRI imaging according to imaging requirements. When the target imaging protocol of the MRI apparatus is acquired, the target index of the corresponding imaging characteristic value and the adjustment priority information of the imaging characteristic value need to be acquired. The imaging characteristic value is a characteristic value which influences the imaging of the MRI device, and the adjustment priority information is adjustment sequence information corresponding to each imaging characteristic value when the imaging characteristic value of the MRI device is adjusted.
The imaging feature values are determined by corresponding feature value correlation coefficients. The eigenvalue relationship number refers to a parameter having a certain influence on the eigenvalue. The number of eigenvalue correlation coefficients is multiple, and there may be some cases where the eigenvalue correlation coefficients corresponding to different imaging eigenvalues are the same, that is, one eigenvalue correlation coefficient may affect multiple imaging eigenvalues. Therefore, the eigenvalue relationship coefficients corresponding to the imaging eigenvalues can be divided into common coefficients and independent coefficients, the common coefficients are eigenvalue correlation coefficients that affect two or more imaging eigenvalues simultaneously, and the independent coefficients are eigenvalue correlation coefficients that affect only one imaging eigenvalue, or when a single imaging eigenvalue is affected, the influence on other imaging eigenvalues is small, or even the influence on eigenvalue correlation coefficients that can be ignored. In addition, there is a difference in the degree of influence (influence weight) of different eigenvalue correlation coefficients for a single imaging eigenvalue.
Specifically, two imaging characteristic values are taken as an example to explain the technical solution in this embodiment, and it is set that in this embodiment, the imaging characteristic value includes a first characteristic value and a second characteristic value, and the corresponding adjustment priority information is that the adjustment priority of the first characteristic value is higher than the adjustment priority of the second characteristic value, that is, the first characteristic value is adjusted first, and then the second characteristic value is adjusted.
And step S200, acquiring a current imaging characteristic value corresponding to the imaging sequence.
After a target imaging protocol of the medical imaging equipment, a target index of the imaging characteristic value and the adjustment priority information are obtained, a corresponding current imaging characteristic value is obtained according to the type of an imaging sequence in the target imaging protocol. The current imaging characteristic value may be a preset value/range value or a value/range value that has not been reset after the previous use of the apparatus.
Step S300, when the current imaging characteristic value does not meet the target index, adjusting the first characteristic value until the first characteristic value meets the corresponding target index; and after the first characteristic value is adjusted, adjusting a second characteristic value until the second characteristic value meets the corresponding target index, wherein the adjustment of the imaging characteristic value is realized by adjusting the characteristic value relation number corresponding to the imaging characteristic value.
After the current imaging characteristic value corresponding to the imaging sequence is obtained, the current imaging characteristic value and the corresponding target index are compared, whether the current imaging characteristic value is within the target index range or not is judged, if the first characteristic value and the second characteristic value are within the corresponding target index range, the current imaging characteristic value meets the corresponding target index, and the current imaging characteristic value of the MRI equipment can be directly used without being adjusted. If at least one of the first characteristic value and the second characteristic value is not in the corresponding target index range, it indicates that the current imaging characteristic value does not meet the target index, and at this time, the current imaging characteristic value needs to be adjusted. In this embodiment, the adjusting process of the current imaging characteristic value includes: and adjusting the characteristic value correlation coefficient corresponding to the current imaging characteristic value, namely, adjusting the value of the characteristic value correlation coefficient to achieve the purpose of adjusting the current imaging characteristic value.
In this embodiment, the imaging characteristic value includes a first characteristic value and a second characteristic value, and the adjustment priority of the first characteristic value is higher than the adjustment priority of the second characteristic value, so when the current imaging characteristic value does not satisfy the target index, the characteristic value correlation coefficient corresponding to the first characteristic value is adjusted first until the first characteristic value satisfies the corresponding target index, and then the characteristic value correlation coefficient corresponding to the second characteristic value is adjusted until the second characteristic value satisfies the corresponding target index.
And S400, after the second characteristic value is adjusted, if the first characteristic value does not meet the corresponding target index, returning to the step of adjusting the first characteristic value, and readjusting the first characteristic value and the second characteristic value.
After the adjustment of the current feature value is completed according to the order of the first feature value and the second feature value, it may be determined that the second feature value satisfies the corresponding target index, however, when the second feature value is adjusted, there may be a situation that the first feature value is affected, and therefore, it is necessary to determine whether the first feature value still satisfies the corresponding target index. If the first characteristic value still meets the corresponding target index, the conditions of the first characteristic value and the second characteristic value are considered to meet the requirement of the target index; if the first characteristic value does not meet the corresponding target index, it is indicated that the adjustment process of the second characteristic value has an influence on the first characteristic value, so that the first characteristic value cannot meet the corresponding target index, at this time, the step of conditioning the first characteristic value needs to be returned, and the step of adjusting the first characteristic value and the second characteristic value needs to be executed again.
Step S500, when the adjusted imaging characteristic values all meet the corresponding target indexes, or when the imaging protocol adjusting process of the medical image equipment meets the preset ending condition, the imaging protocol of the medical image equipment is determined to be adjusted.
After the step of adjusting the first characteristic value and the second characteristic value one or more times is executed, when the adjusted first characteristic value and the adjusted second characteristic value both meet the corresponding target index, or when the adjusted first characteristic value and the adjusted second characteristic value cannot meet the corresponding target index at the same time but it can be determined that the imaging protocol adjusting process of the medical imaging device meets the preset end condition, it is determined that the imaging protocol adjusting of the medical imaging device is completed.
The embodiment provides a medical image equipment imaging protocol adjusting method, when an equipment imaging protocol needs to be adjusted, according to a target imaging protocol, a target index of an imaging characteristic value and adjustment priority information, a characteristic value correlation coefficient corresponding to the imaging characteristic value is sequentially adjusted according to an adjustment priority, so that the imaging characteristic value meets the corresponding index, and when the imaging characteristic value in the later order is adjusted, the imaging characteristic value in the earlier order is ensured to still meet the corresponding target index, so that the adjusting efficiency can be effectively improved, and the adjusting accuracy is higher.
In one embodiment, the number of imaging feature values may also be greater than two. For example, when the imaging characteristic values are three, that is, the imaging characteristic values include a first characteristic value, a second characteristic value and a third characteristic value, and the adjustment sequence is set to be the first characteristic value, the second characteristic value and the third characteristic value in sequence, the adjustment process in step S300 includes the following steps:
step 310, adjusting the first characteristic value until the first characteristic value meets the corresponding target index;
step 320, adjusting the second characteristic value until the second characteristic value meets the corresponding target index, and determining whether the first characteristic value still meets the corresponding target index, if yes, executing step 330; if not, returning to the step 310 until the first characteristic value and the second characteristic value both meet the corresponding target indexes;
step 330, adjusting the third characteristic value until the third characteristic value meets the corresponding target index, and determining whether the first characteristic value and the second characteristic value still meet the corresponding target index,
if so, determining that the imaging protocol of the medical image equipment is adjusted;
if the first characteristic value does not meet the corresponding target index, returning to the step 310, and readjusting until the adjusted imaging characteristic values meet the corresponding target index, or until it is determined that the imaging protocol adjusting process of the medical image equipment meets the preset end condition;
if the second characteristic value does not meet the corresponding target index, the procedure returns to step 320, and the adjustment is performed again until the adjusted imaging characteristic values meet the corresponding target index, or until it is determined that the imaging protocol adjustment process of the medical image device meets the preset end condition.
It is understood that when the number of the imaging characteristic values is plural, the adjustment of the plural imaging characteristic values is carried out according to the above adjustment principle based on the adjustment priority information corresponding thereto.
In one embodiment, the imaging characteristic values include at least two of contrast, signal-to-noise ratio, resolution, and imaging time.
For MRI equipment, the contrast, i.e. the tissue contrast, in the imaging feature values can be specifically classified into a T1 contrast and a T2 contrast, which respectively correspond to T1WI (WI, weight image) and T2WI, where T1WI highlights the relaxation (longitudinal relaxation) difference of tissue T1 and T2WI highlights the relaxation (transverse relaxation) difference of tissue T2. The signal-to-noise ratio is the ratio of the signal strength of the image to the background noise strength. Resolution is the resolution of the resulting MR image. The imaging time refers to the scan time taken by the MRI apparatus to generate an MR image.
Further, for the MRI apparatus, the eigenvalue relationship number corresponding to the contrast in the imaging eigenvalues mainly includes: TE (echo time), TR (repetition time), FA (flip angle), and the like. Wherein, if TR is prolonged, the T1 contrast ratio is weakened; when TR is shortened, the T1 contrast is increased; as TE lengthens, the T2 contrast increases and the T1 contrast decreases; the TE is shortened, the T1 contrast increases and the T2 contrast decreases. In addition, FA increased, T2 contrast decreased, T1 contrast increased; FA decreased, T2 contrast increased, and T1 contrast decreased.
The eigenvalue correlation coefficient corresponding to the signal-to-noise ratio mainly comprises: FOV (Field of view), number of phase encoding steps Ny, NEX (number of excitations, average number of excitations), bandwidth, number of frequency encodings, number of acquisitions, etc. Where the FOV increases, the voxels may be increased and thus the signal-to-noise ratio increases. On the premise that the pixel size is not changed, Ny is increased, and the signal-to-noise ratio is increased; with a constant FOV, Ny increases and the signal-to-noise ratio decreases. The square root of bandwidth is inversely related to the signal-to-noise ratio. The signal-to-noise ratio is proportional to the square root of NEX.
The eigenvalue correlation coefficient corresponding to the resolution mainly includes: FOV, frequency encoding number, phase encoding step number, etc. The eigenvalue correlation coefficient corresponding to the imaging time mainly includes: TR, phase encoding step number, acquisition times, parallel imaging parameters, partial echo and the like.
In addition, for other medical image devices, such as a CT device, the imaging characteristic value also includes contrast, signal-to-noise ratio, resolution and imaging time, however, since the imaging principle of the MRI device is different from that of the CT device, the corresponding imaging characteristic value of the CT device is not actually the same as the imaging characteristic value of the MRI device.
In this embodiment, in the process of adjusting the imaging protocol of the medical image device, the imaging characteristic value to be adjusted may be determined according to actual conditions, specifically, two or three of contrast, signal-to-noise ratio, resolution, and imaging time may be adjusted, or all of the two or three may be adjusted.
In one embodiment, when the current imaging eigenvalue is null, it is determined that the current imaging eigenvalue does not meet the target specification. For the medical image device used for the first time or the device which empties the imaging characteristic value after the previous use, the corresponding current imaging characteristic value is empty, and at this time, the current imaging characteristic value of the device is determined not to meet the target index.
And further, when the current imaging characteristic value is null, setting the corresponding current imaging characteristic value according to the target index. Because the current imaging characteristic value of the medical image equipment is null, the corresponding current imaging characteristic value can be directly set according to the target index.
In one embodiment, when the current imaging characteristic value is not null, if the current imaging characteristic value is not within the range of the target index, it is determined that the current imaging characteristic value does not satisfy the target index. For the medical image device which is used for the first time and has the default imaging characteristic value, or the device which is used for the last time, the corresponding current imaging characteristic value is not null, and at the moment, if the current imaging characteristic value is not in the range of the target index, the current imaging characteristic value of the device is determined not to meet the target index.
Further, when the current imaging characteristic value is not null, the current imaging characteristic value is adjusted so that the current imaging characteristic value is in the range of the target index. Because the current imaging characteristic value of the medical image equipment is not null, the corresponding current imaging characteristic value can be directly adjusted according to the target index.
In one embodiment, further comprising: and after the second characteristic value is adjusted, if the first characteristic value meets the corresponding target index, determining that the imaging protocol of the medical image equipment is adjusted. After the adjustment of the second characteristic value is completed, if the first characteristic value still meets the corresponding index, the adjustment effect is good, and it can be determined that the adjustment of the imaging protocol is completed.
In one embodiment, if the imaging characteristic values cannot be simultaneously satisfied by the adjustment of the imaging characteristic values, it may be determined that the imaging protocol adjustment of the medical image device is completed if it is determined that the imaging protocol adjustment process of the medical image device satisfies the preset end condition.
Specifically, determining that the imaging protocol adjustment process of the medical image device satisfies a preset end condition includes any one of:
the first item: when the imaging protocol adjusting times of the medical image equipment reach preset adjusting times, determining that the imaging protocol adjusting process meets a preset ending condition;
the second term is: when the imaging protocol adjusting time of the medical image equipment reaches the preset adjusting time, determining that the imaging protocol adjusting process meets the preset ending condition;
the third item: and when the adjustment ending control instruction is detected, determining that the imaging protocol adjustment process meets a preset ending condition.
In one embodiment, after determining that the imaging protocol adjustment process of the medical image device satisfies the preset end condition, the method further includes: and adjusting the first characteristic value and the second characteristic value according to the protocol adjustment historical record so that the adjusted first characteristic value meets the corresponding target index, and the adjusted second characteristic value is the value which is closest to the corresponding target index in the protocol adjustment historical record. That is to say, when the imaging characteristic values cannot meet the corresponding target indexes at the same time, according to the priority adjustment sequence, the imaging characteristic values ranked at the top are ensured to meet the corresponding target indexes, and the imaging characteristic values ranked at the back are ensured to be as close to the corresponding target indexes as possible.
In one embodiment, the process of adjusting the imaging feature value by adjusting the feature value correlation coefficient is explained taking two imaging feature values as an example, as shown in fig. 2.
Setting the first characteristic value as M, the second characteristic value as N, wherein M and N have corresponding independent coefficients respectively, and the same common coefficient also exists, and then the adjusting process of the imaging characteristic values M and N is as follows:
(1) adjusting the characteristic value correlation coefficient of M to enable M to meet the corresponding target index;
(2) adjusting the independent coefficient of N, and judging whether N can meet the corresponding target index;
if so, confirming that the adjustment is completed;
if not, executing the next step;
(3) adjusting the independent coefficient and the public coefficient of N at the same time, and judging whether N can meet the corresponding target index again;
if not, the M and the N can not meet the corresponding target indexes at the same time, and the M and the N can be adjusted to enable the M to meet the corresponding target indexes and enable the N to be closest to the corresponding target indexes;
if yes, executing the next step;
(4) judging whether M still meets the corresponding target index;
if so, confirming that the adjustment is completed;
if not, executing the next step;
(5) adjusting the independent coefficient of M, and judging whether M can meet the corresponding target index;
if so, confirming that the adjustment is completed;
if not, returning to the step (1) to readjust M and N.
In one embodiment, a specific example of imaging protocol adjustment of an MRI device is provided. The target imaging protocol is used for realizing tissue comparison through a GRE sequence, and target indexes of imaging characteristic values comprise: t1 tissue contrast is realized, the resolution is 256, the scanning time does not exceed 2.5min, and the signal-to-noise ratio RSNR is 1.00. The order of the adjustment priorities is as follows: contrast > resolution > signal-to-noise ratio > scan time. The adjustment process comprises the following steps:
1) setting a characteristic value correlation coefficient corresponding to the contrast: setting TE to be 6ms, TR to be 350 and FA to be 90, and setting the parameters relatively independently.
2) Setting a characteristic value correlation coefficient corresponding to the resolution: the resolution can meet the requirement 256 by adjusting the FOV size and the phase encoding steps.
3) Setting a characteristic value correlation coefficient corresponding to the signal-to-noise ratio: the parameters influencing the signal-to-noise ratio are more, relatively independent coefficients can be preferentially adjusted, such as the acquisition times, the bandwidth, the phase encoding step number and the like, and if the signal-to-noise ratio cannot meet 1.00, the coefficients influencing other imaging characteristic values are adjusted.
4) After the adjustment of the signal-to-noise ratio is completed, scanning time confirmation is carried out, if the scanning time exceeds 2.5min, relatively independent parameters such as parallel imaging parameters can be adjusted firstly to see whether the parameters are met, and if the parameters are met, the completion of the adjustment is confirmed. And if the imaging characteristic values do not meet the preset end conditions, adjusting coefficients influencing other imaging characteristic values, such as adjusting acquisition times and the like, until all the imaging characteristic values meet the corresponding target indexes, or determining that the imaging protocol adjusting process of the medical image equipment meets the preset end conditions.
It should be understood that although the various steps in the flow charts of fig. 1-2 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-2 may include multiple sub-steps or multiple stages that are not necessarily performed at the same time, but may be performed at different times, and the order of performance of the sub-steps or stages is not necessarily sequential, but may be performed in turn or alternating with other steps or at least some of the sub-steps or stages of other steps.
In one embodiment, as shown in fig. 3, there is provided a medical image device imaging protocol adjusting apparatus, comprising: a first acquisition module 100, a second acquisition module 200, an adjustment module 300, and a determination module 400.
The first obtaining module 100 is configured to obtain a target imaging protocol of the medical imaging apparatus, a target index of an imaging feature value, and adjustment priority information, where the target imaging protocol includes an imaging sequence and a feature value correlation coefficient corresponding to the imaging feature value, the imaging feature value at least includes a first feature value and a second feature value, and an adjustment priority of the first feature value is higher than an adjustment priority of the second feature value;
the second obtaining module 200 is configured to obtain a current imaging characteristic value corresponding to an imaging sequence;
the adjusting module 300 is configured to adjust the first feature value when the current imaging feature value does not satisfy the target index until the first feature value satisfies the corresponding target index; after the first characteristic value is adjusted, adjusting a second characteristic value until the second characteristic value meets the corresponding target index, wherein the adjustment of the imaging characteristic value is realized by adjusting the characteristic value relation number corresponding to the imaging characteristic value; after the second characteristic value is adjusted, if the first characteristic value does not meet the corresponding target index, returning to the step of adjusting the first characteristic value, and readjusting the first characteristic value and the second characteristic value;
the determining module 400 is configured to determine that the imaging protocol adjustment of the medical image device is completed when the adjusted imaging characteristic values all meet the corresponding target index, or when it is determined that the imaging protocol adjustment process of the medical image device meets a preset end condition.
For specific limitations of the medical image device imaging protocol adjusting apparatus, reference may be made to the above limitations of the medical image device imaging protocol adjusting method, which will not be described herein again. The modules in the imaging protocol adjusting device of the medical image equipment can be completely or partially realized by software, hardware and the combination thereof. The modules can be embedded in a hardware form or independent from a processor in the computer device, and can also be stored in a memory in the computer device in a software form, so that the processor can call and execute operations corresponding to the modules.
In one embodiment, a computer device is provided, comprising a memory and a processor, the memory having a computer program stored therein, the processor implementing the following steps when executing the computer program: acquiring a target imaging protocol, a target index of an imaging characteristic value and adjustment priority information of medical image equipment, wherein the target imaging protocol comprises an imaging sequence and a characteristic value correlation coefficient corresponding to the imaging characteristic value, the imaging characteristic value at least comprises a first characteristic value and a second characteristic value, and the adjustment priority of the first characteristic value is higher than that of the second characteristic value; acquiring a current imaging characteristic value corresponding to an imaging sequence; when the current imaging characteristic value does not meet the target index, adjusting the first characteristic value until the first characteristic value meets the corresponding target index; after the first characteristic value is adjusted, adjusting a second characteristic value until the second characteristic value meets the corresponding target index, wherein the adjustment of the imaging characteristic value is realized by adjusting the characteristic value relation number corresponding to the imaging characteristic value; after the second characteristic value is adjusted, if the first characteristic value does not meet the corresponding target index, returning to the step of adjusting the first characteristic value, and readjusting the first characteristic value and the second characteristic value; and when the adjusted imaging characteristic values all meet the corresponding target indexes, or the imaging protocol adjusting process of the medical image equipment meets the preset end condition, determining that the imaging protocol of the medical image equipment is adjusted.
In one embodiment, the processor, when executing the computer program, further implements any of:
the first item: when the current imaging characteristic value is empty, determining that the current imaging characteristic value does not meet a target index;
the second term is: and when the current imaging characteristic value is not empty, determining that the current imaging characteristic value does not meet the target index if the current imaging characteristic value is not in the range of the target index.
In one embodiment, the processor, when executing the computer program, further implements any of:
the first item: when the current imaging characteristic value is empty, setting a corresponding current imaging characteristic value according to the target index;
the second term is: and when the current imaging characteristic value is not empty, adjusting the current imaging characteristic value so as to enable the current imaging characteristic value to be in the range of the target index.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and after the second characteristic value is adjusted, if the first characteristic value meets the corresponding target index, determining that the imaging protocol of the medical image equipment is adjusted.
In one embodiment, the processor, when executing the computer program, further implements any of:
the first item: when the imaging protocol adjusting times of the medical image equipment reach preset adjusting times, determining that the imaging protocol adjusting process meets a preset ending condition;
the second term is: when the imaging protocol adjusting time of the medical image equipment reaches the preset adjusting time, determining that the imaging protocol adjusting process meets the preset ending condition;
the third item: and when the adjustment ending control instruction is detected, determining that the imaging protocol adjustment process meets a preset ending condition.
In one embodiment, the processor, when executing the computer program, further performs the steps of: and adjusting the first characteristic value and the second characteristic value according to the protocol adjustment historical record so that the adjusted first characteristic value meets the corresponding target index, and the adjusted second characteristic value is the value which is closest to the corresponding target index in the protocol adjustment historical record.
In one embodiment, a computer-readable storage medium is provided, having a computer program stored thereon, which when executed by a processor, performs the steps of: acquiring a target imaging protocol, a target index of an imaging characteristic value and adjustment priority information of medical image equipment, wherein the target imaging protocol comprises an imaging sequence and a characteristic value correlation coefficient corresponding to the imaging characteristic value, the imaging characteristic value at least comprises a first characteristic value and a second characteristic value, and the adjustment priority of the first characteristic value is higher than that of the second characteristic value; acquiring a current imaging characteristic value corresponding to an imaging sequence; when the current imaging characteristic value does not meet the target index, adjusting the first characteristic value until the first characteristic value meets the corresponding target index; after the first characteristic value is adjusted, adjusting a second characteristic value until the second characteristic value meets the corresponding target index, wherein the adjustment of the imaging characteristic value is realized by adjusting the characteristic value relation number corresponding to the imaging characteristic value; after the second characteristic value is adjusted, if the first characteristic value does not meet the corresponding target index, returning to the step of adjusting the first characteristic value, and readjusting the first characteristic value and the second characteristic value; and when the adjusted imaging characteristic values all meet the corresponding target indexes, or the imaging protocol adjusting process of the medical image equipment meets the preset end condition, determining that the imaging protocol of the medical image equipment is adjusted.
In one embodiment, the computer program when executed by the processor further implements any of:
the first item: when the current imaging characteristic value is empty, determining that the current imaging characteristic value does not meet a target index;
the second term is: and when the current imaging characteristic value is not empty, determining that the current imaging characteristic value does not meet the target index if the current imaging characteristic value is not in the range of the target index.
In one embodiment, the computer program when executed by the processor further implements any of:
the first item: when the current imaging characteristic value is empty, setting a corresponding current imaging characteristic value according to the target index;
the second term is: and when the current imaging characteristic value is not empty, adjusting the current imaging characteristic value so as to enable the current imaging characteristic value to be in the range of the target index.
In one embodiment, the computer program when executed by the processor further performs the steps of: and after the second characteristic value is adjusted, if the first characteristic value meets the corresponding target index, determining that the imaging protocol of the medical image equipment is adjusted.
In one embodiment, the computer program when executed by the processor further implements any of:
the first item: when the imaging protocol adjusting times of the medical image equipment reach preset adjusting times, determining that the imaging protocol adjusting process meets a preset ending condition;
the second term is: when the imaging protocol adjusting time of the medical image equipment reaches the preset adjusting time, determining that the imaging protocol adjusting process meets the preset ending condition;
the third item: and when the adjustment ending control instruction is detected, determining that the imaging protocol adjustment process meets a preset ending condition.
In one embodiment, the computer program when executed by the processor further performs the steps of: and adjusting the first characteristic value and the second characteristic value according to the protocol adjustment historical record so that the adjusted first characteristic value meets the corresponding target index, and the adjusted second characteristic value is the value which is closest to the corresponding target index in the protocol adjustment historical record.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware related to instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, the computer program can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in the embodiments provided herein may include non-volatile and/or volatile memory, among others. Non-volatile memory can include read-only memory (ROM), Programmable ROM (PROM), Electrically Programmable ROM (EPROM), Electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Link DRAM (SLDRAM), Rambus Direct RAM (RDRAM), direct bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A medical imaging device imaging protocol adjustment method, comprising:
acquiring a target imaging protocol, a target index of an imaging characteristic value and adjustment priority information of medical image equipment, wherein the target imaging protocol comprises an imaging sequence and a characteristic value correlation coefficient corresponding to the imaging characteristic value, the imaging characteristic value at least comprises a first characteristic value and a second characteristic value, and the adjustment priority of the first characteristic value is higher than the adjustment priority of the second characteristic value; wherein the imaging characteristic values comprise at least two of contrast, signal-to-noise ratio, resolution, and imaging time;
acquiring a current imaging characteristic value corresponding to the imaging sequence;
when the current imaging characteristic value does not meet the target index, adjusting the first characteristic value until the first characteristic value meets the corresponding target index; after the first characteristic value is adjusted, adjusting the second characteristic value until the second characteristic value meets the corresponding target index, wherein the adjustment of the imaging characteristic value is realized by adjusting the characteristic value relation number corresponding to the imaging characteristic value, and the imaging characteristic value is determined by the corresponding characteristic value correlation coefficient; the characteristic value correlation coefficient corresponding to the imaging characteristic value comprises echo time, repetition time and a scanning visual field; the characteristic value correlation coefficient of each imaging characteristic value is divided into a public coefficient and an independent coefficient, the independent coefficient of the second characteristic value is preferentially adjusted when the second characteristic value is adjusted, and after the independent coefficient of the second characteristic value is adjusted, if the second characteristic value does not meet the corresponding target index, the public coefficient and the independent coefficient of the second characteristic value are adjusted at the same time;
after the second characteristic value is adjusted, if the first characteristic value does not meet the corresponding target index, returning to the step of adjusting the first characteristic value, and readjusting the first characteristic value and the second characteristic value;
and when the adjusted imaging characteristic values all meet the corresponding target indexes, or the imaging protocol adjusting process of the medical image equipment meets a preset ending condition, determining that the imaging protocol adjusting of the medical image equipment is finished.
2. The medical image device imaging protocol adjustment method of claim 1, further comprising any one of:
the first item: when the current imaging characteristic value is empty, determining that the current imaging characteristic value does not meet the target index;
the second term is: and when the current imaging characteristic value is not empty, if the current imaging characteristic value is not in the range of the target index, determining that the current imaging characteristic value does not meet the target index.
3. The medical image device imaging protocol adjusting method according to claim 2, wherein the adjusting process of the current imaging feature value comprises any one of the following:
the first item: when the current imaging characteristic value is empty, setting a corresponding current imaging characteristic value according to the target index;
the second term is: and when the current imaging characteristic value is not empty, adjusting the current imaging characteristic value so as to enable the current imaging characteristic value to be in the range of the target index.
4. The medical image device imaging protocol adjustment method of claim 1, further comprising:
and after the second characteristic value is adjusted, if the first characteristic value meets the corresponding target index, determining that the adjustment of the imaging protocol of the medical image equipment is completed.
5. The medical image device imaging protocol adjustment method according to claim 1, wherein determining that the imaging protocol adjustment process of the medical image device satisfies a preset end condition includes any one of:
the first item: when the imaging protocol adjusting times of the medical image equipment reach preset adjusting times, determining that the imaging protocol adjusting process meets a preset ending condition;
the second term is: when the imaging protocol adjusting time length of the medical image equipment reaches the preset adjusting time length, determining that the imaging protocol adjusting process meets the preset ending condition;
the third item: and when an adjustment ending control instruction is detected, determining that the imaging protocol adjustment process meets a preset ending condition.
6. The medical image device imaging protocol adjusting method according to claim 1, wherein after determining that the imaging protocol adjusting process of the medical image device satisfies a preset end condition, further comprising: and adjusting the first characteristic value and the second characteristic value according to the protocol adjustment historical record so that the adjusted first characteristic value meets the corresponding target index, and the adjusted second characteristic value is the value which is closest to the corresponding target index in the protocol adjustment historical record.
7. A medical imaging device imaging protocol adjustment apparatus, comprising:
the system comprises a first acquisition module, a second acquisition module and a third acquisition module, wherein the first acquisition module is used for acquiring a target imaging protocol, a target index of an imaging characteristic value and adjustment priority information of medical image equipment, the target imaging protocol comprises an imaging sequence and a characteristic value correlation coefficient corresponding to the imaging characteristic value, the imaging characteristic value at least comprises a first characteristic value and a second characteristic value, and the adjustment priority of the first characteristic value is higher than that of the second characteristic value; wherein the imaging characteristic values comprise at least two of contrast, signal-to-noise ratio, resolution, and imaging time;
the second acquisition module is used for acquiring the current imaging characteristic value corresponding to the imaging sequence;
the adjusting module is used for adjusting the first characteristic value when the current imaging characteristic value does not meet the target index until the first characteristic value meets the corresponding target index; after the first characteristic value is adjusted, adjusting the second characteristic value until the second characteristic value meets the corresponding target index, wherein the adjustment of the imaging characteristic value is realized by adjusting the characteristic value relation number corresponding to the imaging characteristic value, and the imaging characteristic value is determined by the corresponding characteristic value correlation coefficient; after the second characteristic value is adjusted, if the first characteristic value does not meet the corresponding target index, returning to the step of adjusting the first characteristic value, and readjusting the first characteristic value and the second characteristic value; the characteristic value correlation coefficient corresponding to the imaging characteristic value comprises echo time, repetition time and a scanning visual field; the characteristic value correlation coefficient of each imaging characteristic value is divided into a public coefficient and an independent coefficient, the independent coefficient of the second characteristic value is preferentially adjusted when the second characteristic value is adjusted, and after the independent coefficient of the second characteristic value is adjusted, if the second characteristic value does not meet the corresponding target index, the public coefficient and the independent coefficient of the second characteristic value are adjusted at the same time;
and the determining module is used for determining that the imaging protocol of the medical image equipment is adjusted when the adjusted imaging characteristic values all meet the corresponding target indexes or the imaging protocol adjusting process of the medical image equipment meets a preset ending condition.
8. The apparatus of claim 7, wherein the adjustment module is further configured to any one of:
the first item: when the current imaging characteristic value is empty, determining that the current imaging characteristic value does not meet the target index;
the second term is: and when the current imaging characteristic value is not empty, if the current imaging characteristic value is not in the range of the target index, determining that the current imaging characteristic value does not meet the target index.
9. A computer device comprising a memory and a processor, the memory storing a computer program, wherein the processor implements the steps of the method of any one of claims 1 to 6 when executing the computer program.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of the method of any one of claims 1 to 6.
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