CN105105776B - Exposure cut-off dosage bearing calibration and device under AEC patterns - Google Patents
Exposure cut-off dosage bearing calibration and device under AEC patterns Download PDFInfo
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- CN105105776B CN105105776B CN201510486618.8A CN201510486618A CN105105776B CN 105105776 B CN105105776 B CN 105105776B CN 201510486618 A CN201510486618 A CN 201510486618A CN 105105776 B CN105105776 B CN 105105776B
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Abstract
The invention discloses exposure cut-off dosage bearing calibration under a kind of AEC patterns, exposure of the position to be checked in this method statistics given age section under non-AEC patterns ends dosage and calculates the average of exposure cut-off dosage, when average meets preparatory condition, the information such as the age according to person to be checked determine person to be checked body thickness and corresponding AEC patterns under exposure cut-off dosage, or using under average AEC patterns corresponding to asing exposure end dosage.The invention also discloses exposure cut-off dosage means for correcting and X-ray shooting system under a kind of AEC patterns.Exposure can more be met the exposure cut-off dosage of actual clinical inspection by the bearing calibration of dosage under the AEC patterns of the present invention, improve the accuracy of inspection result, so that auto-exposure control more conforms to actual imaging demand, picture quality is optimal under the conditions of lowest dose level.
Description
Technical field
The present invention relates to field of medical technology, the bearing calibration of the exposure cut-off dosage under more particularly to a kind of AEC patterns
And device.
Background technology
Auto-exposure control (AEC, Automatic Exposure Control) technology is to be now widely used for image
The technology of quality control, its general principle be to reach the picture quality of clinical diagnosis desired level (such as brightness) for foundation, if
Corresponding dose threshold value is determined to control end exposure.When being checked using X-ray shooting system person to be checked, imaging is placed on
AEC ionisation chambers (or other types sensor) Real-time Feedback dose value before device, high pressure generator utilize the dose value fed back
Exposure levels are automatically controlled with the difference of the reference dose threshold value of setting.
And this reference dose threshold value is determined by automatic exposure correction, the main method used at present is in mould
Intend exposing under clinical condition, simulate attenuation characteristic of the human body to X ray using certain body mould, be exposed, according to exposure
Shi Caiyong dosage and picture quality determine reference dose threshold value, and the brightness such as image is too high, can suitably reduce with reference to agent
Threshold value is measured, otherwise is improved.So repeatedly, until reaching required picture quality, to determine final reference dose threshold value.And
With the exposure parameter under the AEC patterns of the final reference dose threshold value of automatic exposure bearing calibration acquisition by default.
However, currently conventional automatic exposure bearing calibration is typically to simulate a limited number of kind of application scenarios, then carry out
Exposure, the correction result obtained under several limited application scenarios is taken the photograph applied to the X ray in the case of different actual clinicals
The auto-exposure control of shadow system.For example only by being exposed to fixed one or several body moulds, these body moulds are usually
Simulate water mould, polymethyl methacrylate (PMMA, polymethylmethacrylate) of the human body to the attenuation characteristic of X ray
Body mould, prosthese etc., using different body moulds, the effect meeting difference of correction is very big, although closest with human body using prosthese,
The exposure status that can not reflect completely in actual clinical, thus the result for causing the automatic exposure under simulated scenario to correct is endless
Full piece inspection is taken the photograph suitable for hospital's actual clinical.In addition, the detection object of different geographical Different hospital is there is also difference, such as
Occidentals and Asian, north of China people waits with southerner also causes its attenuation characteristic to X rays to have in difference physically
A great difference.If therefore the automatic exposure correction result under the conditions of single simulation is applied to the actual clinical situation of all hospitals
In, it will certainly cause to correct not being inconsistent for result and actual desired, cause actual exposure by the too high or too low of dosage, or adopt
The image collected it is excessively bright or excessively dark, namely the picture quality collected do not reach actual clinical demand, therefore, prior art
Exposure under the AEC patterns of acquisition may not meet actual clinical demand by dosage.
The content of the invention
In order to solve the above-mentioned technical problem, the invention provides exposure cut-off dosage bearing calibration, bag under a kind of AEC patterns
Include following steps：
Exposure of the position to be checked in statistics given age section under non-AEC patterns, which ends dosage and calculate the exposure, to cut
The only average of dosage；
Prestored at the position to be checked in average and the given age section of the exposure cut-off dosage under AEC patterns
Exposure cut-off dosage difference when exceeding predetermined threshold value：
According to the age of person to be checked, height, body weight, given age section sample belonging to it height, body weight and institute
The average height and average weight in given age section are stated, estimates the thickness at the position to be checked of the person to be checked；
According to the corresponding relation of the thickness that prestores and the exposure cut-off dosage under AEC patterns, it is determined that it is described estimate it is to be checked
Exposure cut-off dosage under AEC patterns corresponding to the thickness at position；
With the exposure cut-off dosage under the AEC patterns that are determined to the position exposure to be checked to obtain medical image；
, will with the exposure cut-off dosage exposed under AEC patterns used if it is qualified that the medical image is identified as
The cut-off dosage renewal of the exposure under AEC patterns to be prestored under the given age section corresponding to the position to be checked.
Further, the thickness at the position to be checked estimated is obtained by equation below：
Wherein, TEstimate thicknessFor the thickness at the given age section position to be checked estimated, n is in the given age section
Sample number, TLast time estimates thicknessTreat in the given age section estimated for the exposure cut-off dosage timing under last AEC patterns
Examine the thickness at position.
Further, the bearing calibration also includes：
If the medical image is underproof, prestored under the given age section corresponding to the position to be checked
Exposure cut-off dosage under AEC patterns keeps constant.
Further, it is pre- corresponding to the position to be checked under the given age section that the predetermined threshold value is 0.05 times
The cut-off dosage of the exposure under AEC patterns deposited.
Further, the bearing calibration also includes：
After the gray value for judging the medical image meets dynamic range, judge whether the medical image is qualified, institute
It is related to image system to state dynamic range.
In order to solve the above technical problems, present invention also offers exposure cut-off dosage bearing calibration, bag under a kind of AEC patterns
Include following steps：
Exposure of the position to be checked in statistics given age section under non-AEC patterns, which ends dosage and calculate the exposure, to cut
The only average of dosage；
Prestored at the position to be checked in average and the given age section of the exposure cut-off dosage under AEC patterns
Exposure cut-off dosage difference when exceeding predetermined threshold value：
The position to be checked is exposed to obtain medical image with the average in the exposure cut-off dosage；
If it is qualified that the medical image is identified as, to expose the average of exposure cut-off dosage used by institute
State the cut-off dosage renewal of the exposure under AEC patterns to prestore corresponding to the position to be checked in given age section.
Further, the bearing calibration also includes：
If the medical image is underproof, prestored under the given age section corresponding to the position to be checked
Exposure cut-off dosage under AEC patterns keeps constant.
Further, it is pre- corresponding to the position to be checked under the given age section that the predetermined threshold value is 0.05 times
The cut-off dosage of the exposure under AEC patterns deposited.
Further, the bearing calibration also includes：
After the gray value for judging the medical image meets dynamic range, judge whether the medical image is qualified, institute
It is related to image system to state dynamic range.
In order to solve the above technical problems, present invention also offers exposure cut-off dosage means for correcting, bag under a kind of AEC patterns
Include：
Statistic unit, for counting exposure cut-off dosage of the position to be checked in given age section under non-AEC patterns simultaneously
Calculate the average of the exposure cut-off dosage；
Judging unit, for judging average and the position to be checked in the given age section of the exposure cut-off dosage
Whether the difference of the exposure cut-off dosage under AEC patterns to prestore exceeds predetermined threshold value；
Thickness estimates unit, for the judging unit judged result be beyond predetermined threshold value when, according to person to be checked
Age, height, body weight, the height of given age section sample belonging to it, body weight and the given age section it is flat
Equal height and average weight, estimate the thickness at the position to be checked of the person to be checked；
Exposure cut-off dosage acquiring unit, for pair according to the thickness to prestore and the exposure cut-off dosage under AEC patterns
It should be related to, it is determined that the exposure cut-off dosage under the AEC patterns corresponding to the thickness at the position to be checked estimated；
Image acquisition unit, for being exposed with the exposure cut-off dosage under the AEC patterns that are determined to the position to be checked
To obtain medical image；
Updating block, for when the medical image is identified as qualified, to expose the exposure under AEC patterns used
The exposure under AEC patterns to be prestored corresponding to the position to be checked under the given age section is ended dosage by cut-off dosage
Renewal.
In order to solve the above technical problems, present invention also offers exposure cut-off dosage means for correcting, bag under a kind of AEC patterns
Include：
Statistic unit, for counting exposure cut-off dosage of the position to be checked in given age section under non-AEC patterns simultaneously
Calculate the average of the exposure cut-off dosage；
Judging unit, the average and the position to be checked in the given age section for judging the exposure cut-off dosage are pre-
Whether the difference for the exposure cut-off dosage under AEC patterns deposited exceeds predetermined threshold value；
Image acquisition unit, for the judging unit judged result be beyond predetermined threshold value when, with the exposure
The average of light cut-off dosage is exposed to obtain medical image to the position to be checked；
Updating block, for when the medical image is identified as qualified, to expose the exposure closing agent used
The exposure under AEC patterns to prestore corresponding to the position to be checked in the given age section is ended dosage more by the average of amount
Newly.
In order to solve the above technical problems, the present invention is also provided under a kind of X-ray shooting system, including above-mentioned AEC patterns
Exposure cut-off dosage means for correcting.
Using the present invention, have the advantages that：
Based on the statistics of clinical exposure parameter, the exposure cut-off dosage under AEC patterns is corrected automatically so that
More meet actual clinical demand to picture quality with what the exposure cut-off dosage under the AEC patterns take the photograph piece collection, can be real
The image for meeting actual clinical demand is collected under present alap dosage.
According to the height of the sample of age range, body weight, the year where the height and body weight of person to be checked, and person to be checked
Age section average height and average weight estimate the thickness at person to be checked position to be checked, and then according to the position to be checked estimated
Thickness ends dosage come corresponding expose of thickness determined with this is estimated, and shooting acquisition is carried out in the exposure cut-off dosage with determination
After the picture quality for meeting actual clinical demand, age range position to be checked is used as using the exposure cut-off dosage of the determination
Exposure cut-off dosage under AEC patterns, because when the thickness to person to be checked position to be checked is estimated, used sample has
There is certain region, and the mode for employing multisample statistics is estimated to the thickness at the position to be checked of person to be checked, therefore,
Using correction obtain AEC patterns under exposure cut-off dosage carry out image collection can obtain more conform to actual clinical need
The image asked, person to be checked is it also avoid while inspection result accuracy is improved and receives more dose of radiations.
Because when the exposure cut-off dosage under to ACE patterns is updated, used exposure cut-off dosage can be this
Exposure of the position to be checked of age range under non-AEC patterns ends the average value of dosage or with the region age
The multisample in section is counted the exposure cut-off dosage under the AEC patterns estimated corresponding to thickness at obtained position to be checked,
Can solve different geographical hospital to a certain extent and dosage is ended not to the exposure under the AEC patterns of X-ray shooting system
With requirement, the exposure obtained under region age range AEC patterns in position to be checked that can be adaptively ends dosage.
By the correction that cut-off dosage is exposed to AEC so that person to be checked can receive few x-ray dose as far as possible
Meanwhile the image for meeting actual clinical demand is collected, the x-ray dose received due to reducing person to be checked, therefore certain
The optimal utilization to bulb and high pressure generator is also achieved in degree, extends the service life of bulb.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art and advantage, below will be to implementing
The required accompanying drawing used is briefly described in example or description of the prior art, it should be apparent that, drawings in the following description are only
Only it is some embodiments of the present invention, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the flow chart that cut-off dosage bearing calibration is exposed under the AEC patterns of the embodiment of the present invention one；
Fig. 2 is the workflow of the exposure cut-off dose modification under the AEC patterns based on embodiment one；
Fig. 3 is the flow chart that cut-off dosage bearing calibration is exposed under the AEC patterns of the embodiment of the present invention two；
Fig. 4 is the workflow of the exposure cut-off dose modification under the AEC patterns based on embodiment two.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art obtained on the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
Embodiment one：
Fig. 1 is referred to, present embodiments provides exposure cut-off dosage bearing calibration under a kind of AEC patterns, including following step
Suddenly：
Exposure of the position to be checked in statistics given age section under non-AEC patterns, which ends dosage and calculate the exposure, to cut
The only average of dosage；
Prestored at the position to be checked in average and the given age section of the exposure cut-off dosage under AEC patterns
Exposure cut-off dosage difference when exceeding predetermined threshold value：
According to the age of person to be checked, height, body weight, given age section sample belonging to it height, body weight and institute
The average height and average weight in given age section are stated, estimates the thickness at the position to be checked of the person to be checked；
According to the corresponding relation of the thickness that prestores and the exposure cut-off dosage under AEC patterns, it is determined that it is described estimate it is to be checked
Exposure cut-off dosage under AEC patterns corresponding to the thickness at position；
With the exposure cut-off dosage under the AEC patterns that are determined to the position exposure to be checked to obtain medical image；
, will with the exposure cut-off dosage exposed under AEC patterns used if it is qualified that the medical image is identified as
The cut-off dosage renewal of the exposure under AEC patterns to be prestored under the given age section corresponding to the position to be checked.
If the medical image is underproof, prestored under the given age section corresponding to the position to be checked
Exposure cut-off dosage under AEC patterns keeps constant.
Those skilled in the art know, for X-ray shooting system, AEC patterns can be used in photographic process,
Non- AEC patterns, i.e. Manual exposure control model can be used, so-called Manual exposure control model refers to doctor according to its diagosis
Custom manually sets exposure parameter：Such as：Bulb voltage, tube current etc., to collect the image for meeting actual clinical demand.
Doctor when being photographed to position to be checked, per manual setting single exposure parameter, all can by X-ray shooting system
The exposure parameter set is recorded, and when doctor, which continually adopts, manually sets exposure parameter, then may be said
The quality for the image that the bright X-ray shooting system collects under AEC patterns does not simultaneously meet actual clinical demand, so when can
Prompt whether doctor needs the exposure under the AEC patterns to the X-ray shooting system in a manner of by voice message or display
Light cut-off dosage is corrected.Because the thickness at the person to be checked position to be checked of all ages and classes is different, therefore to AEC moulds
When exposure cut-off dosage under formula is corrected, it is also desirable to carried out according to specific age range.In the present embodiment, according to people's
Age is divided into five age ranges：Age is more than 15 years old for adult, and the age was big youngster less than or equal to 15 years old more than or equal to 5 years old
Child, age were small children less than 5 years old more than or equal to 1 years old, and the age was baby less than 1 years old more than or equal to 3 months, and the age is less than 3
The moon is young infant.
In the present embodiment, X-ray shooting system can count exposure of the position to be checked in given age section under non-AEC patterns
Light ends dosage, such as counts the age more than 15 years old, when position to be checked is chest, the exposure closing agent under Manual exposure control model
Amount, and the average value for exposing cut-off dosage that counting statistics arrives.When the average value and the year that calculate the exposure cut-off dosage obtained
When the difference of the exposure cut-off dosage under AEC patterns to be prestored during age section shooting rabat exceeds predetermined threshold value, then it can treat
The thickness of the chest of inspection person's (person's age to be checked belongs to the age range) is estimated.In the present embodiment, the predetermined threshold value is
The cut-off dosage of the exposure under AEC patterns to be prestored corresponding to the 0.05 times age range pectus.
Specifically, the thickness at position to be checked is estimated by equation below in the present embodiment：
Wherein, TEstimate thicknessFor the thickness at the given age section position to be checked estimated, n is in the given age section
Sample number, TLast time estimates thicknessTreat in the given age section estimated for the exposure cut-off dosage timing under last AEC patterns
Examine the thickness at position.
Still using above-mentioned age range as more than 15 years old, exemplified by shooting position is chest, belong to this when the age of person to be checked
During age range, the thickness of estimating of its chest can be by the single height of the people for belonging to the age range stored to system
And body weight, the height and body weight of person to be checked, the average height of the age range and average weight, and last AEC timings,
Thickness these parameters when age range shooting position is chest estimated, calculating acquisition is carried out using above-mentioned formula.
After being estimated to the thickness at the position to be detected in given age section, prestored according to X-ray shooting system
The corresponding relation of thickness and the exposure cut-off dosage under AEC patterns, finds the AEC corresponding to the thickness at the position to be checked estimated
Exposure cut-off dosage under pattern.
For example：If the chest thickness that X-ray shooting system prestores ends the corresponding of dosage with exposure under AEC patterns
Relation is：Chest thickness ends in the range of 5cm~35cm since 5cm every the exposure that the corresponding experiment of 1cm measures
Dosage, that is, 31 dosage are corresponded to, if the thickness for the chest estimated is 6cm, can determined and the AEC patterns corresponding to 6cm
Under exposure cut-off dosage.
Inspection position is treated with the exposure cut-off dosage under the AEC patterns that are determined carry out shooting and obtain medical image, if clapping
The medical image for taking the photograph acquisition is identified as qualified, i.e. shooting obtains medical image and meets actual clinical demand and (can take up a job as a doctor
Learn whether the gray scale of image, the texture at position to be detected are clear etc. to be evaluated), then to expose under AEC patterns used
Exposure cut-off dosage will be prestored corresponding to the position to be checked under the age range under AEC patterns exposure cut-off dosage
Renewal.
If the medical image that shooting obtains is underproof, keep the position to be checked under the given age section corresponding
Prestore under AEC patterns exposure cut-off dosage it is constant.
, can be with before the medical image obtained to exposure carries out judging whether it is qualified in addition, in other embodiments
The gray value of the medical image first obtained to exposure judges, judges whether the gray value of the medical image meets dynamic model
Enclose, specifically, X-ray shooting system can calculate the gray value of the area-of-interest of the medical image, if the medical science figure
The gray value of the area-of-interest of picture belongs to the dynamic range of default [Gmin, Gmax], then whether judges the medical image
It is qualified, if the gray value of the area-of-interest of the medical image is not belonging to the dynamic range of [Gmin, Gmax], then keep the spy
The cut-off dosage of the exposure under AEC patterns to be prestored under dating section corresponding to the position to be checked is constant, namely this AEC
Exposure cut-off dose modification failure under pattern.The dynamic range is related to image system.Specifically, the dynamic range takes
Certainly tonal range when X ray reception device is imaged.
Fig. 2 is the workflow of the exposure cut-off dose modification under the AEC patterns of the present embodiment.Below in conjunction with practical application
Correction work stream under the AEC patterns of the present embodiment exposure cut-off dosage bearing calibration be described in detail.
As shown in Fig. 2 in the present embodiment, it is more than the person to be checked of 15 years old with the age, check point is to application exemplified by chest
The correction work stream of the bearing calibration of the present embodiment illustrates.Check point, that is, chest are selected first, and person to be checked is entered
The conventional chest exposure inspection operation of row, the rotine exposure inspection operation include being exposed with the exposure cut-off dosage of Default Value
Optical test；
User's (being usually doctor) checks that obtained medical image is assessed to exposure, if be satisfied with to image, protects
The Default Value for holding exposure cut-off dosage is constant；If be unsatisfied with to image, then inspection is exposed using non-AEC patterns, it is non-
AEC patterns are Manual exposure control model, and user understands manual adjustment of exposure parameter under Manual exposure control model.
X-ray shooting system (hereinafter referred to as system) is being detected using Manual exposure control model adjustment exposure parameter
Afterwards, preserve the exposure cut-off dosage under Manual exposure control model and the exposure under the Manual exposure control model of storage is ended
Rapid Dose Calculation assembly average.When the average value and the age to prestore that calculate the exposure cut-off dosage obtained are to be checked more than 15 years old
The difference of exposure cut-off dosage when person shoots rabat under AEC patterns exceeds the AEC moulds that the age range breast examination prestores
When exposure under formula ends 0.05 times of dosage, system prompts the user whether to need to carry out AEC exposure cut-offs in a manner of interactive
Dose modification, when user's selection is, the interface of system automatic spring AEC exposure cut-off dose modifications.
System is more than the body of the sample of 15 years old according to the age of person to be checked, height, body weight, the age of storage in systems
The average height and average weight of high, body weight and the age range, estimate the chest thickness of person to be checked.
Chest thickness is estimated especially by equation below：
Wherein, TEstimate thicknessTo estimate the thickness of obtained person's chest to be checked, n is the participation chest that the age is more than 15 years old in system
The sample number that portion checks, TLast time estimates thicknessThe age estimated for the exposure cut-off dosage timing under last AEC patterns is more than 15
The chest thickness of the people in year；Age range average height is that the exposure under last AEC patterns ends dosage timing, participates in school
The average height of sample of the positive age more than 15 years old；Age range average weight is the exposure cut-off under last AEC patterns
During dose modification, the average weight of sample of the age more than 15 years old of correction is participated in.
Estimate after obtaining person's chest thickness to be checked, system is ended according to the chest thickness to prestore and the exposure under AEC patterns
The corresponding relation of dosage, it is determined that the exposure cut-off dosage under AEC patterns corresponding to the person's chest thickness to be checked estimated.To determine
Person's chest to be checked corresponding to exposure cut-off dosage under AEC patterns be exposed, obtain medical image, system is obtaining the doctor
Whether the gray value for learning the medical image for first judging to obtain after image meets dynamic range, i.e., the region of interest of described medical image
Whether the gray value in domain is in the tonal range in detector image-forming, when keeping the age to be more than not if 15 years old corresponding to chest
The cut-off dosage of the exposure under AEC patterns to prestore is constant, namely the exposure cut-off dose modification failure under this AEC pattern.
If continuing to judge whether the medical image is qualified, that is, it is actual to judge whether the medical image meets
Clinical demand, end dosage by people of the age more than 15 years old if exposing the exposure under AEC patterns used if meeting with this
The cut-off dosage of the exposure under AEC patterns to be prestored corresponding to chest is updated；If the medical image is unqualified, keep
The cut-off dosage of the exposure under AEC patterns to be prestored when age is more than 15 years old corresponding to chest is constant, namely this AEC pattern
Under exposure cut-off dose modification failure.
Correspondingly, the present embodiment additionally provides exposure cut-off dosage means for correcting under a kind of AEC patterns, including：
Statistic unit, for counting exposure cut-off dosage of the position to be checked in given age section under non-AEC patterns simultaneously
Calculate the average of the exposure cut-off dosage；
Judging unit, the average and the position to be checked in the given age section for judging the exposure cut-off dosage are pre-
Whether the difference for the exposure cut-off dosage under AEC patterns deposited exceeds predetermined threshold value；
Thickness estimates unit, for the judging unit judged result be beyond predetermined threshold value when, according to person to be checked
Age, height, body weight, the height of given age section sample belonging to it, body weight and the given age section it is flat
Equal height and average weight, estimate the thickness at the position to be checked of the person to be checked；
Exposure cut-off dosage acquiring unit, for pair according to the thickness to prestore and the exposure cut-off dosage under AEC patterns
It should be related to, it is determined that the exposure cut-off dosage under the AEC patterns corresponding to the thickness at the position to be checked estimated；
Image acquisition unit, for being exposed with the exposure cut-off dosage under the AEC patterns that are determined to the position to be checked
To obtain medical image；
Updating block, for when the medical image is identified as qualified, to expose the exposure under AEC patterns used
The exposure under AEC patterns to be prestored corresponding to the position to be checked under the given age section is ended dosage by cut-off dosage
Renewal.
The course of work of exposure cut-off dosage means for correcting may refer to expose under above-mentioned AEC patterns under the AEC patterns
Light cut-off dosage bearing calibration is carried out, and here is omitted.
Embodiment two
Fig. 3 is referred to, present embodiments provides and cut-off dosage bearing calibration is exposed under a kind of AEC patterns, in the present embodiment
The Rule of judgment and embodiment one kind whether being updated to the exposure cut-off dosage under AEC patterns are similar, no longer superfluous herein
State.The correction of exposure cut-off dosage under AEC patterns in the present embodiment unlike embodiment one is with the specific of statistics
The average of exposure cut-off dosage of the position to be checked of age range under non-AEC patterns is exposed to obtain medical science to position to be checked
Image, the average of dosage is ended to update with exposure of the position to be checked under non-AEC patterns when the medical image is qualified
State the cut-off dosage of the exposure under AEC patterns to prestore corresponding to the position to be checked in given age section.In the medical science figure
As it is unqualified when, then keep the exposure under AEC patterns to be prestored under the given age section corresponding to the position to be checked
It is constant to end dosage.
Fig. 4 is the workflow of the exposure cut-off dose modification under the AEC patterns of the present embodiment.With the AEC in embodiment one
In the workflow, ended with the exposure under non-AEC patterns unlike the workflow of exposure cut-off dose modification under pattern
The average of dosage is exposed to obtain medical image to the position to be checked of person to be checked, when the medical image is qualified, with non-
Under AEC patterns exposure cut-off dosage average come update corresponding to the position to be checked in the given age section prestore
Exposure cut-off dosage under AEC patterns.When the medical image is unqualified, then keeps described under the given age section and treat
The cut-off dosage of the exposure under AEC patterns to be prestored corresponding to inspection position is constant.Other parts in the workflow then with implementation
The workflow of correction in example one is similar, and here is omitted.
Correspondingly, the present embodiment additionally provides exposure cut-off dosage means for correcting under a kind of AEC patterns, including：
Statistic unit, for counting exposure cut-off dosage of the position to be checked in given age section under non-AEC patterns simultaneously
Calculate the average of the exposure cut-off dosage；
Judging unit, the average and the position to be checked in the given age section for judging the exposure cut-off dosage are pre-
Whether the difference for the exposure cut-off dosage under AEC patterns deposited exceeds predetermined threshold value；
Image acquisition unit, for the judging unit judged result be beyond predetermined threshold value when, with the exposure
The average of light cut-off dosage is exposed to obtain medical image to the position to be checked；
Updating block, for when the medical image is identified as qualified, to expose the exposure closing agent used
The exposure under AEC patterns to prestore corresponding to the position to be checked in the given age section is ended dosage more by the average of amount
Newly.
The course of work of exposure cut-off dosage means for correcting may refer to the AEC patterns of the present embodiment under the AEC patterns
Lower exposure cut-off dosage bearing calibration is carried out, and here is omitted.
Using the present invention, have the advantages that：
Based on the statistics of clinical exposure parameter, the exposure cut-off dosage under AEC patterns is corrected automatically so that
More meet actual clinical demand to picture quality with what the exposure cut-off dosage under the AEC patterns take the photograph piece collection, can be real
The image for meeting actual clinical demand is collected under present alap dosage.
According to the height of the sample of age range, body weight, the age where the height and body weight of person to be checked, and person to be checked
The average height and average weight in section estimate the thickness at person to be checked position to be checked, and then according to the thickness at the position to be checked estimated
Corresponding expose of thickness for spending to determine with this is estimated ends dosage, and carrying out shooting in the exposure cut-off dosage with determination is accorded with
After the picture quality for closing actual clinical demand, age range position to be checked is used as using the exposure cut-off dosage of the determination
Exposure cut-off dosage under AEC patterns, because when the thickness to person to be checked position to be checked is estimated, used sample has
There is certain region, and the mode for employing multisample statistics is estimated to the thickness at the position to be checked of person to be checked, therefore,
The collection of exposure cut-off dosage progress image under the AEC patterns obtained using correction, which can obtain, more conforms to actual clinical
The image of demand, person to be checked is it also avoid while inspection result accuracy is improved and receives more dose of radiations.
Because when the exposure cut-off dosage under to ACE patterns is updated, used exposure cut-off dosage can be this
Exposure of the position to be checked of age range under non-AEC patterns ends the average value of dosage or with the region age
The multisample in section is counted the exposure cut-off dosage under the AEC patterns estimated corresponding to thickness at obtained position to be checked,
Can solve different geographical hospital to a certain extent and dosage is ended not to the exposure under the AEC patterns of X-ray shooting system
With requirement, the exposure obtained under region age range AEC patterns in position to be checked that can be adaptively ends dosage.
By the correction that cut-off dosage is exposed to AEC so that person to be checked can receive few x-ray dose as far as possible
Meanwhile the image for meeting actual clinical demand is collected, the x-ray dose received due to reducing person to be checked, therefore certain
The optimal utilization to bulb and high pressure generator is also achieved in degree, extends the service life of bulb.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (7)
1. exposure cut-off dosage bearing calibration under a kind of AEC patterns, it is characterised in that comprise the following steps：
Exposure of the position to be checked in statistics given age section under non-AEC patterns ends dosage and calculates the exposure closing agent
The average of amount；
In the exposure under AEC patterns that the average of the exposure cut-off dosage and the position to be checked in the given age section prestore
When the difference of light cut-off dosage exceeds predetermined threshold value：
According to the age of person to be checked, height, body weight, given age section sample belonging to it height, body weight and the spy
The average height and average weight in dating section, estimate the thickness at the position to be checked in given age section belonging to the person to be checked
Degree；
According to the corresponding relation of the thickness to prestore and the exposure cut-off dosage under AEC patterns, it is determined that the position to be checked estimated
Thickness corresponding to AEC patterns under exposure cut-off dosage；
With the exposure cut-off dosage under the AEC patterns that are determined to the position exposure to be checked to obtain medical image；
If it is qualified that the medical image is identified as, to expose the exposure cut-off dosage under AEC patterns used by described in
The cut-off dosage renewal of the exposure under AEC patterns to be prestored under given age section corresponding to the position to be checked.
2. exposure cut-off dosage bearing calibration under AEC patterns as claimed in claim 1, it is characterised in that the portion to be checked estimated
The thickness of position is obtained by equation below：
Wherein, TEstimate thicknessFor the thickness at the given age section position to be checked estimated, n is the sample in the given age section
Number, TLast time estimates thicknessThe given age section portion to be checked estimated for the exposure cut-off dosage timing under last AEC patterns
The thickness of position.
3. exposure cut-off dosage bearing calibration under AEC patterns as claimed in claim 1 or 2, it is characterised in that also include：
If the medical image is underproof, prestored under the given age section corresponding to the position to be checked in AEC
Exposure cut-off dosage under pattern keeps constant.
4. exposure cut-off dosage bearing calibration under AEC patterns as claimed in claim 1 or 2, it is characterised in that the default threshold
It is worth the exposure closing agent under AEC patterns to be prestored under the given age section for 0.05 times corresponding to the position to be checked
Amount.
5. exposure cut-off dosage bearing calibration under AEC patterns as claimed in claim 1 or 2, it is characterised in that also include：
After the gray value for judging the medical image meets dynamic range, judge whether the medical image is qualified, it is described dynamic
State scope is related to image system.
A kind of 6. exposure cut-off dosage means for correcting under AEC patterns, it is characterised in that including：
Statistic unit, dosage and calculated for counting exposure cut-off of the position to be checked in given age section under non-AEC patterns
The average of the exposure cut-off dosage；
Judging unit, for judging that the exposure ends what the average of dosage prestored with the position to be checked in the given age section
Whether the difference of the exposure cut-off dosage under AEC patterns exceeds predetermined threshold value；
Thickness estimates unit, for the judging unit judged result be beyond predetermined threshold value when, according to the year of person to be checked
Age, height, body weight, height, body weight and the average body in the given age section of given age section sample belonging to it
High and average weight, estimate the thickness at the position to be checked in given age section belonging to the person to be checked；
Exposure cut-off dosage acquiring unit, for the corresponding pass according to the thickness to prestore with the exposure cut-off dosage under AEC patterns
It is, it is determined that the exposure cut-off dosage under the AEC patterns corresponding to the thickness at the position to be checked estimated；
Image acquisition unit, for being obtained with the exposure cut-off dosage under the AEC patterns that are determined to the position exposure to be checked
Obtain medical image；
Updating block, for when the medical image is identified as qualified, being ended with the exposure exposed under AEC patterns used
The exposure under AEC patterns to be prestored corresponding to the position to be checked under the given age section is ended dosage more by dosage
Newly.
A kind of 7. X-ray shooting system, it is characterised in that including：Exposure cut-off dosage under AEC patterns described in claim 6
Means for correcting.
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| CN201710569966.0A CN107374659B (en) | 2015-08-10 | 2015-08-10 | Exposure cut-off dose correction method and device in AEC mode |
| CN201510486618.8A CN105105776B (en) | 2015-08-10 | 2015-08-10 | Exposure cut-off dosage bearing calibration and device under AEC patterns |
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| CN107374659A (en) * | 2015-08-10 | 2017-11-24 | 上海联影医疗科技有限公司 | Exposure cut-off dosage bearing calibration and device under AEC patterns |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106214171B (en) * | 2016-09-07 | 2020-04-10 | 东软医疗***股份有限公司 | Automatic exposure control method and device |
| CN108013887B (en) * | 2016-10-28 | 2020-09-11 | 北京东软医疗设备有限公司 | Automatic exposure control method and device and automatic exposure system |
| CN108606804A (en) * | 2016-12-13 | 2018-10-02 | 上海西门子医疗器械有限公司 | The automated calibration system and method and Medical Devices of auto-exposure control |
| CN108245182A (en) * | 2018-01-17 | 2018-07-06 | 江苏美伦影像***有限公司 | A kind of intelligent digital DR systems with anticipation |
| CN110090031A (en) * | 2018-01-30 | 2019-08-06 | 上海西门子医疗器械有限公司 | Automatic exposure dosage adjusting method, storage medium and X-ray machine for X-ray machine |
| CN110099502B (en) * | 2019-04-23 | 2021-01-08 | 上海联影医疗科技股份有限公司 | Self-adaptive control method and system of X-ray imaging equipment |
| WO2020216307A1 (en) | 2019-04-23 | 2020-10-29 | 上海联影医疗科技有限公司 | Method, system and device for acquiring radiological image, and storage medium |
| CN115018940A (en) * | 2019-07-30 | 2022-09-06 | 上海联影医疗科技股份有限公司 | Method, system, device and storage medium for acquiring radiation image |
| CN110766000B (en) * | 2019-09-29 | 2022-03-25 | 深圳市安健科技股份有限公司 | Automatic exposure control method and computer readable storage medium |
| CN113288187A (en) * | 2021-07-27 | 2021-08-24 | 深圳市丛峰科技有限公司 | Self-adaptive dosage control device and method |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10163583A1 (en) * | 2001-12-21 | 2003-07-03 | Philips Intellectual Property | Method and device for exposing x-rays |
| US7545915B2 (en) * | 2005-02-11 | 2009-06-09 | Koninklijke Philips Electronics N.V. | Dose rate control in an X-ray system |
| JP4713952B2 (en) * | 2005-06-02 | 2011-06-29 | 株式会社東芝 | Automatic exposure control device for X-ray fluoroscopy |
| DE102005036514B4 (en) * | 2005-08-03 | 2017-08-31 | Siemens Healthcare Gmbh | Method and device for generating a digital X-ray image of an examination object |
| RU2507619C2 (en) * | 2006-08-21 | 2014-02-20 | Конинклейке Филипс Электроникс Н.В. | Portable x-ray detector with grid sensing unit and x-ray imaging system for automatic exposure setting for portable x-ray detector |
| CN101627916B (en) * | 2009-08-10 | 2012-01-25 | 深圳圣诺医疗设备有限公司 | Breast X-ray machine and method for realizing fully automatic exposure |
| CN102809869B (en) * | 2011-06-02 | 2015-04-08 | 赵建国 | X-ray exposure control method and device and X-ray exposure system |
| CN103905740B (en) * | 2014-04-17 | 2017-04-19 | 广东欧珀移动通信有限公司 | Method and device for improving automatic exposure effect realized through manual adjustment |
| CN104146724B (en) * | 2014-08-29 | 2017-06-30 | 重庆邮电大学 | A kind of digital X-ray machine automatic exposure control method and device |
| CN105105776B (en) * | 2015-08-10 | 2017-11-28 | 上海联影医疗科技有限公司 | Exposure cut-off dosage bearing calibration and device under AEC patterns |
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| CN107374659A (en) * | 2015-08-10 | 2017-11-24 | 上海联影医疗科技有限公司 | Exposure cut-off dosage bearing calibration and device under AEC patterns |
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| CN107374659B (en) | 2021-05-18 |
| CN105105776A (en) | 2015-12-02 |
| CN107374659A (en) | 2017-11-24 |
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