CN104545973A - CT (Computed Tomography) scanning method and device for heart - Google Patents
CT (Computed Tomography) scanning method and device for heart Download PDFInfo
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Abstract
The invention provides a CT (Computed Tomography) scanning method and device for heart. The method comprises the following steps: pre-scanning the heart information of an object to be scanned to obtain initial scanning data; reconstructing a plurality of initial heart images at different period phases according to the initial scanning data; determining an optimal period phase of the object to be scanned according to the plurality of initial heart images; performing final scanning on the heart of the object to be scanned based on the optimal period phase. In the embodiment of the invention, the X-ray radiation dosage of a patient in a scanning process can be lowered, the risk of more X-ray irradiation on the patient is lowered on the premise of ensuring the heart image quality, and the correctness and effectiveness of diagnosis can be ensured.
Description
Technical field
The application relates to medical data processing technology field, particularly a kind of CT scan method of heart and device.
Background technology
When carrying out heart scanning to CT scan object (such as needing the patient diagnosed or the user having other demands), need to determine that phase phase (such as relaxing period and systole) carries out CT scan.Generally, carry out the relative phase phase about 75% of the relaxing period of CT scan employing, Syst relative phase phase about 30%.
But inventor finds in research process, due to scrambling and the specificity of heart movement, single relaxing period and systole is adopted for different scanning object, the heart movement situation of different scanning object cannot be reflected exactly, and cardiac reconstruction image may be made to produce more serious motion artifacts.And if employing helical scanning whole phase obtains data for projection mutually, sweep object can be made again to accept more x-ray bombardment.
Summary of the invention
Technical problems to be solved in this application are to provide a kind of CT scan method of heart, in order to avoid the phenomenon that cannot reflect the heart movement of different scanning object in prior art exactly as far as possible, and reduce the more serious artifact produced in cardiac reconstruction image, can also reduce sweep object connects irradiated X-ray as far as possible simultaneously.
Present invention also provides a kind of CT scan device of heart, in order to ensure said method implementation and application in practice.
In order to solve the problem, this application discloses a kind of CT scan method of heart, comprising:
The heart information of prescan object to be scanned, to obtain preliminary sweep data;
According to described preliminary sweep data reconstruction not the same period phase several initial cardiac images;
The optimum phase phase of described object to be scanned is determined according to several initial cardiac images described;
Heart based on described optimum phase relatively described object to be scanned finally scans.
Optionally, the heart information of described prescan object to be scanned, to obtain preliminary sweep data, comprising:
Determine the scanning interval of described prescan, described scanning interval, at least comprises a R-R interval;
Determine the scanning position of described prescan, described scanning position comprises at least one fault plane of the heart of described object to be scanned;
Described scanning position triggers the prescan carried out the heart of object to be scanned in described scanning interval.
Optionally, determine the optimum phase phase of described object to be scanned according to several initial cardiac images reconstructed, comprising:
Choose the heart area in several initial cardiac images described respectively;
The absolute value of image difference in the heart area determining every two adjacent phase phases, with obtain respectively every two adjacent phases mutually between differential image;
Calculate the standard deviation of the differential image between every two adjacent phases phases, and draw curve movement according to described standard deviation;
In described curve movement a two region minimum point is defined as optimum systole phase and optimum relaxing period phase respectively.
Optionally, the described heart based on described optimum phase relatively described object to be scanned finally scans, and comprising:
The projection angle range that scan-data is corresponding is determined mutually according to the described optimum phase;
Only in described projection angle range, the heart of described object to be scanned is scanned.
Optionally, the described heart based on described optimum phase relatively described object to be scanned finally scans, and comprising:
The position corresponding described optimum phase is defined as high milliampere scanning area, and, other positions are defined as low milliampere scanning area;
For the heart of described object to be scanned, adopt high milliampere to scan in described high milliampere scanning area, and adopt low milliampere to scan in described low milliampere scanning area.
This application discloses a kind of CT scan device of heart, comprising:
Pre-scan module, for the heart information of prescan object to be scanned, to obtain preliminary sweep data;
Rebuild module, for according to described preliminary sweep data reconstruction not the same period phase several initial cardiac images;
Determine optimum phase phase module, for determining the optimum phase phase of described object to be scanned according to several initial cardiac images described;
Optimum scan module, for finally scanning based on the heart of described optimum phase relatively described object to be scanned.
Optionally, described pre-scan module comprises:
Determine scanning interval submodule, for determining the scanning interval of described prescan, described scanning interval, at least comprises a R-R interval;
Determine scanning position submodule, for determining the scanning position of described prescan, described scanning position comprises at least one fault plane of the heart of described object to be scanned;
Triggers module, for triggering the prescan carried out the heart of object to be scanned in described scanning interval on described scanning position.
Optionally, describedly determine that optimum phase phase module comprises:
Choose submodule, for choosing the heart area in several initial cardiac images described respectively;
Determine differential image submodule, for determine every two adjacent phase phases heart area in the absolute value of image difference, with obtain respectively every two adjacent phases mutually between differential image;
Calculating sub module, for calculating the standard deviation of the differential image between every two adjacent phases phases, and draws curve movement according to described standard deviation;
Determine phase phase submodule, for the region minimum point of two in described curve movement is defined as optimum systole phase and optimum relaxing period phase respectively.
Optionally, described optimum scan module comprises:
Determine drop shadow spread's submodule, for determining according to the described optimum phase projection angle range that scan-data is corresponding mutually;
First optimum scanning submodule, for only scanning the heart of described object to be scanned in described projection angle range.
Optionally, described optimum scan module comprises:
Determine scanning area submodule, for the position corresponding described optimum phase is defined as high milliampere scanning area, and, other positions are defined as low milliampere scanning area;
Second optimum scanning submodule, for the heart for described object to be scanned, adopts high milliampere to scan in described high milliampere scanning area, and adopts low milliampere to scan in described low milliampere scanning area.
Compared with prior art, the application comprises following advantage:
In the embodiment of the present application, before formally carrying out heart scanning, first adopt the prescan of low dose of short time to calculate optimum phase phase, final heart scanning scanned mutually according to the precalculated optimum phase, thus each sweep object can be realized have different and meet the optimum phase phase of oneself heart condition, thus avoid in prior art and adopt fixing phase scanning phase for each sweep object, make sweep time mutually not good and the phenomenon that causes cardiac image motion artifacts more, also the risk choosing the not good scanning failure caused because of phase sweep time is significantly reduced, simultaneously because follow-up final scanning has the guidance of optimum phase phase, therefore, it is possible to effectively avoid the scanning of other not wedding day phases, thus the x-ray irradiation dose that reduction patient accepts in scanning process, the risk that sweep object is subject to more multi x-ray irradiation is reduced under the prerequisite ensureing cardiac image quality, also correctness and the effectiveness of diagnosis can be ensured.
Certainly, the arbitrary product implementing the application might not need to reach above-described all advantages simultaneously.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present application, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the application, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart of the CT scan embodiment of the method for the heart of the application;
Fig. 2 is the principle schematic of optimum phase phase computational methods in the application;
Fig. 3 is the principle schematic that instructs single phase scanning phase mutually of optimum phase in the application;
Fig. 4 be in the application the optimum phase instruct the principle schematic becoming x-ray tube current scanning mutually;
Fig. 5 is the structured flowchart of the CT scan device embodiment of a kind of heart of the application.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present application, be clearly and completely described the technical scheme in the embodiment of the present application, obviously, described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
The application can be used in numerous general or special purpose accountant environment or configuration.Such as: personal computer, server computer, handheld device or portable set, laptop device, multi-processor device, the distributed computing environment comprising above any device or equipment etc.
The application can describe in the general context of computer executable instructions, such as program module.Usually, program module comprises the routine, program, object, assembly, data structure etc. that perform particular task or realize particular abstract data type.Also can put into practice the application in a distributed computing environment, in these distributed computing environment, be executed the task by the remote processing devices be connected by communication network.In a distributed computing environment, program module can be arranged in the local and remote computer-readable storage medium comprising memory device.
With reference to figure 1, show the flow chart of the CT scan embodiment of the method for a kind of heart of the application, the present embodiment can comprise the following steps:
Step 101: the heart information of prescan object to be scanned, to obtain preliminary sweep data.
In the embodiment of the present application, before carrying out formal cardiac CT scan, need first to use low dose to carry out once of short duration prescan to sweep object, obtain preliminary sweep data with this, these preliminary sweep data are used for the optimum phase phase that subsequent calculations obtains sweep object.Wherein, these preliminary sweep data can comprise data for projection and corresponding ECG data.Preliminary sweep data can be the scan-datas of this sweep object obtained in advance, can also be the scan-datas carrying out separately scanning.The scan type of prescan can be tomoscan also can be helical scanning, and scanning position should cover whole heart area of sweep object or the subregion of heart.Can injection of contrast medium when carrying out prescan, also can not injection of contrast medium.
Wherein, the heart information of prescan object to be scanned, to obtain preliminary sweep data, specifically can comprise:
Steps A 1: the scanning interval determining described prescan, described scanning interval, at least comprises a R-R interval.
When the heart information of prescan object to be scanned, need the scanning interval determining prescan, this scanning interval, at least comprises a R-R interval.In the present embodiment, in order to can reconstruct whole phase phase images of this sweep object and be used for calculating optimum phase phase, preliminary sweep data at least must comprise a R-R interval data in the electrocardiogram of sweep object.Wherein, R-R interval, represents the region in patient's electrocardiogram between continuous two R ripples.
Steps A 2: the scanning position determining described prescan, described scanning position comprises at least one fault plane of the heart of described object to be scanned.
In addition, the scanning position that prescan is set also is needed before prescan, to make the information of the heart tissue at least comprising a part of sweep object in preliminary sweep data.Therefore, in order to determine the optimum phase phase of heart movement, scan-data must comprise the heart information of motion, and scanning position should comprise at least one fault plane of the heart of object to be scanned.
Be understandable that, the concrete order of steps A 1 and steps A 2 can not by the restriction of its sequence number.Further, in order to save flow process, meet the scan-data of the above condition of scanning if existed in the scanning sequence of this sweep object, this scan-data can be used for calculating the optimum phase phase of patient equally.
Steps A 3: trigger the prescan heart of object to be scanned carried out in described scanning interval on described scanning position.
On the scanning position that steps A 2 is determined, carry out scanning the prescan in interval to the heart of sweep object, thus obtain preliminary sweep data.
Then enter step 102: according to described preliminary sweep data reconstruction not the same period phase several initial cardiac images.
After the preliminary sweep data of heart obtaining sweep object, according to the preliminary sweep data of heart obtaining sweep object, within a R-R interval, reconstruct several initial cardiac images of phase not same period.
Step 103: the optimum phase phase determining described object to be scanned according to several initial cardiac images described.
In this step, then the phase initial cardiac image of many phases that foundation step 102 reconstructs, calculate the optimum phase phase of this patient.It should be noted that, the calculating optimum phase has a variety of method mutually, it is all generally the Variation Features drafting heart movement degree curve of the phase initial cardiac image of many phases by reconstructing, and in heart movement degree curve, determine that two minimum phase places are respectively as optimum angle, such as, as relaxing period and systole.
Wherein, this step can comprise in the specific implementation:
Step B1: choose the heart area in several initial cardiac images described respectively.
Shown in participation Fig. 2, it is the principle schematic of phase phase computational methods optimum in the embodiment of the present application.In fig. 2, between a R-R interim reconstruct several not the same period phase initial cardiac image be A, B, C and D, in A, B, C and D, select interested heart area respectively, namely such as, scheme the part that the broken circle in A irises out in Fig. 2 is interested heart area.
Be understandable that, the time limits different in this R-R interval can be selected according to actual needs to reconstruct different initial cardiac images.
Step B2: the absolute value of image difference in the heart area determining every two adjacent phase phases, with obtain respectively every two adjacent phases mutually between differential image.
After determining interested heart area, the image in the interested heart area of every two adjacent phase phases is done and differs from and take absolute value, thus the differential image between the initial cardiac image obtaining two adjacent phase phases.Such as, the differential image ︱ A-B ︱ obtained by image A and image B in Fig. 2, or the differential image ︱ B-C ︱ obtained by image B and image C, or the differential image ︱ C-D ︱ obtained by image C and image D.
Step B3: the standard deviation calculating the differential image between every two adjacent phases phases, and draw curve movement according to described standard deviation.
Step B4: the region minimum point of two in described curve movement is defined as optimum systole phase and optimum relaxing period phase respectively.
The differential image ︱ A-B ︱, the ︱ B-C ︱ that are obtained by step B3 and ︱ C-D ︱ calculate standard deviation, and draw curve movement g (t) according to the standard deviation calculated, shown in figure 2, choose the optimum phase phase of value corresponding to two region minimum point in g (t) (the optimum phase phase a point in such as Fig. 2 and optimum phase phase b point) as this patient.
Specifically in the process determining optimum systole phase and optimum relaxing period phase, can according to the feature of human heart motion, there are two region minimum points in heart movement curve, the phase that the nearer region minimum point in distance R peak is corresponding is called as optimum systole phase mutually (if regard a RR interval as 100%, so optimum systole is corresponding to be in 0 ~ 50% scope, and optimum relaxing period is corresponding is in 50% ~ 100% scope).Therefore in the present embodiment, can by electrocardiogram with 50% for boundary is divided into two parts, find two region minimum points of front 50% and rear 50% respectively, thus the optimum phase phase point a (as optimal retraction phase phase) of final acquisition and optimum phase phase point b (as best relaxing period phase).
Then return Fig. 1, enter step 104: the heart based on described optimum phase relatively described object to be scanned finally scans.
Relevant heart scanning parameter is set in this step according to optimum phase phase a and optimum phase phase b, such as X-ray scanning time, initial sweep time, termination sweep time and x-ray tube current Changing Pattern (variable x-ray tube current) etc., and with reference to the optimum phase phase calculated, select the phase phase of sweep object, thus carry out optimum scanning at the given period phase position of sweep object.
Wherein, this step in the specific implementation, can have various ways, and wherein a kind of mode can comprise the following steps:
Step C1: determine the projection angle range that scan-data is corresponding mutually according to the described optimum phase.
Shown in figure 3, for the optimum phase instructs the principle schematic of single phase scanning phase mutually.In figure 3, the position of optimum phase phase of chain-dotted line (the vertical dotted line namely in Fig. 3) for calculating, and the sweep limits of optimum scanning is centered by the position of optimum phase phase.Owing to limiting by the projection angle range of rebuilding cardiac CT image, every section of optimum projection angle range scanning the scan-data obtained should be greater than the scope of half-turn+X-ray fan angle.
Step C2: in described projection angle range, the heart of described object to be scanned is scanned.
After the projection angle range determining scan-data, carry out scanning thus obtaining data for projection in a segment limit only near the position of optimum phase phase, and then motion scan bed scans at next optimum phase phase position, other positions are not scanned, and do not produce X-ray (i.e. tomoscan mode).With reference to figure 3, wherein shadow region is data for projection scope.
Wherein, when this step is implemented, a kind of mode can also be had to comprise the following steps:
Step D1: the position corresponding described optimum phase is defined as high milliampere scanning area, and, other positions are defined as low milliampere scanning area.
Shown in figure 4, for the another kind of optimum phase instructs the principle schematic becoming x-ray tube current scanning mutually.In the manner, the position corresponding optimum phase is defined as high milliampere scanning area, and other non-optimal phase phase positions are defined as low milliampere scanning area.
Step D2: for the heart of described object to be scanned, adopts high milliampere to scan in described high milliampere scanning area, and adopts low milliampere to scan in described low milliampere scanning area.
Adopt the manner, X-ray will be launched at the X-ray tube of whole scan period CT always, but high milliampere will be adopted to scan in high milliampere scanning area, and adopt low milliampere to scan in low milliampere scanning area.Larger the used x-ray dose of electric current of the X-ray tube of CT is also larger, thus the cardiac image quality reconstructed is better.
It should be noted that above two kinds is relatively more conventional scan mode, but heart scanning comprises, as long as the optimum phase adopting the embodiment of the present application to calculate all can instruct heart scanning, mutually to complete collection and the reconstruction of scan-data more accurately a variety of.
Visible, in the embodiment of the present application, before formally carrying out heart scanning, first adopt the prescan of low dose of short time to calculate optimum phase phase, final heart scanning scanned mutually according to the precalculated optimum phase, thus each sweep object can be realized have different and meet the optimum phase phase of oneself heart condition, thus avoid in prior art and adopt fixing phase scanning phase for each sweep object, make sweep time mutually not good and the phenomenon that causes cardiac image motion artifacts more, also the risk choosing the not good scanning failure caused because of phase sweep time is significantly reduced, simultaneously because follow-up final scanning has the guidance of optimum phase phase, therefore, it is possible to effectively avoid the scanning of other not wedding day phases, thus the x-ray irradiation dose that reduction patient accepts in scanning process, the risk that sweep object is subject to more multi x-ray irradiation is reduced under the prerequisite ensureing cardiac image quality, also correctness and the effectiveness of diagnosis can be ensured.
For aforesaid embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the application is not by the restriction of described sequence of movement, because according to the application, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in description all belongs to preferred embodiment, and involved action and module might not be that the application is necessary.
Corresponding with the method that the CT scan embodiment of the method for a kind of heart of above-mentioned the application provides, see Fig. 5, present invention also provides a kind of CT scan device embodiment of heart, in the present embodiment, this device can comprise:
Pre-scan module 501, for the heart information of prescan object to be scanned, to obtain preliminary sweep data.
Wherein, described pre-scan module 501 specifically can comprise:
Determine scanning interval submodule, for determining the scanning interval of described prescan, described scanning interval, at least comprises a R-R interval; Determine scanning position submodule, for determining the scanning position of described prescan, described scanning position can comprise at least one fault plane of the heart of described object to be scanned; And triggers module, for triggering the prescan carried out the heart of object to be scanned in described scanning interval on described scanning position.
Rebuild module 502, for according to described preliminary sweep data reconstruction not the same period phase several initial cardiac images.
Determine optimum phase phase module 503, for determining the optimum phase phase of described object to be scanned according to several initial cardiac images described.
Wherein, describedly determine that optimum phase phase module 503 specifically can comprise:
Choose submodule, for choosing the heart area in several initial cardiac images described respectively; Determine differential image submodule, for determine every two adjacent phase phases heart area in the absolute value of image difference, with obtain respectively every two adjacent phases mutually between differential image; Calculating sub module, for calculating the standard deviation of the differential image between every two adjacent phases phases, and draws curve movement according to described standard deviation; With, determine phase phase submodule, for the region minimum point of two in described curve movement is defined as optimum systole phase and optimum relaxing period phase respectively.
Optimum scan module 504, for finally scanning based on the heart of described optimum phase relatively described object to be scanned.
Wherein, described optimum scan module 504 specifically can comprise:
Determine drop shadow spread's submodule, for determining according to the described optimum phase projection angle range that scan-data is corresponding mutually; With, the first optimum scanning submodule, for only scanning the heart of described object to be scanned in described projection angle range.
Wherein, described optimum scan module 504 specifically can comprise:
Determine scanning area submodule, for the position corresponding described optimum phase is defined as high milliampere scanning area, and, other positions are defined as low milliampere scanning area; With, the second optimum scanning submodule, for the heart for described object to be scanned, adopts high milliampere to scan in described high milliampere scanning area, and adopts low milliampere to scan in described low milliampere scanning area.
Visible, in the embodiment of the present application, before formally carrying out heart scanning, first adopt the prescan of low dose of short time to calculate optimum phase phase, final heart scanning scanned mutually according to the precalculated optimum phase, thus each sweep object can be realized have different and meet the optimum phase phase of oneself heart condition, thus avoid in prior art and adopt fixing phase scanning phase for each sweep object, make sweep time mutually not good and the phenomenon that causes cardiac image motion artifacts more, also the risk choosing the not good scanning failure caused because of phase sweep time is significantly reduced, simultaneously because follow-up final scanning has the guidance of optimum phase phase, therefore, it is possible to effectively avoid the scanning of other not wedding day phases, thus the x-ray irradiation dose that reduction patient accepts in scanning process, the risk that sweep object is subject to more multi x-ray irradiation is reduced under the prerequisite ensureing cardiac image quality, also correctness and the effectiveness of diagnosis can be ensured.
It should be noted that, each embodiment in this description all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.For device class embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Finally, also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operating space, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
Above the CT scan method of the heart that the application provides and device are described in detail, apply specific case herein to set forth the principle of the application and embodiment, the explanation of above embodiment is just for helping method and the core concept thereof of understanding the application; Meanwhile, for one of ordinary skill in the art, according to the thought of the application, all will change in specific embodiments and applications, in sum, this description should not be construed as the restriction to the application.
Claims (10)
1. a CT scan method for heart, it is characterized in that, the method comprises:
The heart information of prescan object to be scanned, to obtain preliminary sweep data;
According to described preliminary sweep data reconstruction not the same period phase several initial cardiac images;
The optimum phase phase of described object to be scanned is determined according to several initial cardiac images described;
Heart based on described optimum phase relatively described object to be scanned finally scans.
2. method according to claim 1, is characterized in that, the heart information of described prescan object to be scanned, to obtain preliminary sweep data, comprising:
Determine the scanning interval of described prescan, described scanning interval, at least comprises a R-R interval;
Determine the scanning position of described prescan, described scanning position comprises at least one fault plane of the heart of described object to be scanned;
Described scanning position triggers the prescan carried out the heart of object to be scanned in described scanning interval.
3. method according to claim 1, is characterized in that, determines the optimum phase phase of described object to be scanned, comprising according to several initial cardiac images reconstructed:
Choose the heart area in several initial cardiac images described respectively;
The absolute value of image difference in the heart area determining every two adjacent phase phases, with obtain respectively every two adjacent phases mutually between differential image;
Calculate the standard deviation of the differential image between every two adjacent phases phases, and draw curve movement according to described standard deviation;
In described curve movement a two region minimum point is defined as optimum systole phase and optimum relaxing period phase respectively.
4. method according to claim 1, is characterized in that, the described heart based on described optimum phase relatively described object to be scanned finally scans, and comprising:
The projection angle range that scan-data is corresponding is determined mutually according to the described optimum phase;
Only in described projection angle range, the heart of described object to be scanned is scanned.
5. method according to claim 1, is characterized in that, the described heart based on described optimum phase relatively described object to be scanned finally scans, and comprising:
The position corresponding described optimum phase is defined as high milliampere scanning area, and, other positions are defined as low milliampere scanning area;
For the heart of described object to be scanned, adopt high milliampere to scan in described high milliampere scanning area, and adopt low milliampere to scan in described low milliampere scanning area.
6. a CT scan device for heart, is characterized in that, comprising:
Pre-scan module, for the heart information of prescan object to be scanned, to obtain preliminary sweep data;
Rebuild module, for according to described preliminary sweep data reconstruction not the same period phase several initial cardiac images;
Determine optimum phase phase module, for determining the optimum phase phase of described object to be scanned according to several initial cardiac images described;
Optimum scan module, for finally scanning based on the heart of described optimum phase relatively described object to be scanned.
7. device according to claim 6, is characterized in that, described pre-scan module comprises:
Determine scanning interval submodule, for determining the scanning interval of described prescan, described scanning interval, at least comprises a R-R interval;
Determine scanning position submodule, for determining the scanning position of described prescan, described scanning position comprises at least one fault plane of the heart of described object to be scanned;
Triggers module, for triggering the prescan carried out the heart of object to be scanned in described scanning interval on described scanning position.
8. device according to claim 6, is characterized in that, describedly determines that optimum phase phase module comprises:
Choose submodule, for choosing the heart area in several initial cardiac images described respectively;
Determine differential image submodule, for determine every two adjacent phase phases heart area in the absolute value of image difference, with obtain respectively every two adjacent phases mutually between differential image;
Calculating sub module, for calculating the standard deviation of the differential image between every two adjacent phases phases, and draws curve movement according to described standard deviation;
Determine phase phase submodule, for the region minimum point of two in described curve movement is defined as optimum systole phase and optimum relaxing period phase respectively.
9. device according to claim 6, is characterized in that, described optimum scan module comprises:
Determine drop shadow spread's submodule, for determining according to the described optimum phase projection angle range that scan-data is corresponding mutually;
First optimum scanning submodule, for only scanning the heart of described object to be scanned in described projection angle range.
10. device according to claim 6, is characterized in that, described optimum scan module comprises:
Determine scanning area submodule, for the position corresponding described optimum phase is defined as high milliampere scanning area, and, other positions are defined as low milliampere scanning area;
Second optimum scanning submodule, for the heart for described object to be scanned, adopts high milliampere to scan in described high milliampere scanning area, and adopts low milliampere to scan in described low milliampere scanning area.
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| CN112330800A (en) * | 2020-10-28 | 2021-02-05 | 沈阳先进医疗设备技术孵化中心有限公司 | Image reconstruction method and device, console equipment and CT system |
| CN112603338A (en) * | 2020-12-02 | 2021-04-06 | 赛诺威盛科技（北京）有限公司 | Method and device for selecting and retrospective reconstruction data of heart spiral retrospective reconstruction |
| CN115137383A (en) * | 2022-06-13 | 2022-10-04 | 赛诺威盛科技(北京)股份有限公司 | Method and device for selecting and retrospective reconstruction data of heart spiral retrospective reconstruction |
| US11688110B2 (en) | 2018-06-11 | 2023-06-27 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for evaluating image quality |
| CN112083993B (en) * | 2020-09-02 | 2024-06-07 | 上海联影医疗科技股份有限公司 | Scanning protocol generation method and device, electronic equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299633A (en) * | 1999-11-19 | 2001-06-20 | Ge医疗***环球技术有限公司 | Method and apparatus for controlling x-ray exposing quantity in gated heart scanning course |
| CN1907227A (en) * | 2005-08-03 | 2007-02-07 | 东芝医疗***株式会社 | X-ray computed tomography apparatus |
| JP2008006211A (en) * | 2006-06-30 | 2008-01-17 | Toshiba Corp | Heart beat phase determining apparatus, program and x-ray diagnostic apparatus |
| CN101283912A (en) * | 2007-04-12 | 2008-10-15 | Ge医疗***环球技术有限公司 | X-ray ct apparatus |
| CN101528133A (en) * | 2006-11-03 | 2009-09-09 | 皇家飞利浦电子股份有限公司 | Cardiac phase determination |
| US20120057674A1 (en) * | 2010-09-08 | 2012-03-08 | Siemens Medical Solutions Usa, Inc. | System for image scanning and acquisition with low-dose radiation |
-
2014
- 2014-11-26 CN CN201410699491.3A patent/CN104545973B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1299633A (en) * | 1999-11-19 | 2001-06-20 | Ge医疗***环球技术有限公司 | Method and apparatus for controlling x-ray exposing quantity in gated heart scanning course |
| CN1907227A (en) * | 2005-08-03 | 2007-02-07 | 东芝医疗***株式会社 | X-ray computed tomography apparatus |
| JP2008006211A (en) * | 2006-06-30 | 2008-01-17 | Toshiba Corp | Heart beat phase determining apparatus, program and x-ray diagnostic apparatus |
| CN101528133A (en) * | 2006-11-03 | 2009-09-09 | 皇家飞利浦电子股份有限公司 | Cardiac phase determination |
| CN101283912A (en) * | 2007-04-12 | 2008-10-15 | Ge医疗***环球技术有限公司 | X-ray ct apparatus |
| US20120057674A1 (en) * | 2010-09-08 | 2012-03-08 | Siemens Medical Solutions Usa, Inc. | System for image scanning and acquisition with low-dose radiation |
Cited By (23)
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|---|---|---|---|---|
| CN105902279A (en) * | 2016-06-02 | 2016-08-31 | 沈阳东软医疗***有限公司 | Scanned image reestablishment method and device |
| US10339652B2 (en) | 2016-06-02 | 2019-07-02 | Shenyang Neusoft Medical Systems Co., Ltd. | Image reconstruction |
| CN105902279B (en) * | 2016-06-02 | 2019-02-19 | 沈阳东软医疗***有限公司 | A kind of method and apparatus that scan image is rebuild |
| CN109661200A (en) * | 2016-09-08 | 2019-04-19 | 皇家飞利浦有限公司 | Cardiac computer tomography |
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| US11688110B2 (en) | 2018-06-11 | 2023-06-27 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for evaluating image quality |
| US11915347B2 (en) | 2018-06-11 | 2024-02-27 | Shanghai United Imaging Healthcare Co., Ltd. | Systems and methods for reconstructing cardiac images |
| CN109171775A (en) * | 2018-07-04 | 2019-01-11 | 沈阳东软医疗***有限公司 | Imaging method and scan control method, device, system, equipment and storage medium |
| CN109389653A (en) * | 2018-09-27 | 2019-02-26 | 上海联影医疗科技有限公司 | Cardiac image method for reconstructing, device, computer equipment and readable storage medium storing program for executing |
| CN110728730A (en) * | 2019-09-30 | 2020-01-24 | 东软医疗***股份有限公司 | Image reconstruction method and device, CT (computed tomography) equipment and CT system |
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| CN111084635A (en) * | 2020-01-02 | 2020-05-01 | 沈阳先进医疗设备技术孵化中心有限公司 | CT scanning method and device, CT equipment and CT system |
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