CN108937998A - Adjusting method, device, X-ray equipment and the storage medium in X-ray exposure region - Google Patents
Adjusting method, device, X-ray equipment and the storage medium in X-ray exposure region Download PDFInfo
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- CN108937998A CN108937998A CN201710369472.8A CN201710369472A CN108937998A CN 108937998 A CN108937998 A CN 108937998A CN 201710369472 A CN201710369472 A CN 201710369472A CN 108937998 A CN108937998 A CN 108937998A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/54—Control of apparatus or devices for radiation diagnosis
- A61B6/542—Control of apparatus or devices for radiation diagnosis involving control of exposure
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/08—Auxiliary means for directing the radiation beam to a particular spot, e.g. using light beams
Abstract
The invention discloses the adjusting method in X-ray exposure region, system, X-ray equipment and storage mediums.Method includes: to obtain two images of the target object to be checked under collimator lamp opening state and under closed state when collimator is in the first opening；Image recognition is carried out in two images, obtains the corresponding light shadow figure of the first opening, and the target object figure in shadow；Shadow profile is extracted from light shadow figure, target object profile is extracted from target object figure, and be superimposed and obtain first object exposure area；According to target object profile, the shadow profile is adjusted, obtains the second target light exposure region；First opening is adjusted to the second opening by the change in size according to the second target light exposure region relative to first object exposure area.The technical program processing speed is fast, and success rate is high.
Description
Technical field
The present invention relates to field of medical device, especially a kind of adjusting method in X-ray exposure region, device, X-ray equipment and
Computer readable storage medium.
Background technique
The X-ray equipments such as X-ray machine or computer X-ray tomographic imaging (computed tomography, CT) machine are as a kind of
Medical Devices are widely used in medicine and hygiene fields and patient are imaged with assisting a physician.In X-ray equipment, it will usually including
X-ray bulb, x-ray detector, equipment for reconstructing image and the collimator being arranged between X-ray bulb and x-ray detector etc..
Wherein, X-ray bulb is used for emitting x-ray, and x-ray detector is used to receive the collimator of X-ray bulb transmitting about
The X-ray beam of patient is penetrated after beam, and is converted into image information and is exported to equipment for reconstructing image.Equipment for reconstructing image is used for
The image information of x-ray detector output is received, and image reconstruction is carried out according to relevant information.
Wherein, different X-ray equipments may have different collimators, and an X-ray equipment may have one or more collimations
Device.There is the opening of the X-ray of constraint X-ray bulb transmitting, which is usually approximate rectangular rectangular aperture, is claimed in collimator
Mouth is constrained for X-ray, so that the X-ray of X-ray bulb transmitting becomes approximate rectangular, flat in setting in setting on direction initialization
In the X-ray beam that setting is fan-shaped on face.By adjust collimator on aperture position and size, adjustable patient it is illuminated
Region forms reasonable exposure area so that X-ray beam can irradiate correct area-of-interest.In addition, some collimators
Opening is also likely to be circular or other shapes.
At present for the adjustment of the openings of sizes of collimator, mainly manually completed by operator.In order to more convenient accurate
Control collimator openings of sizes to form reasonable X-ray exposure region, those skilled in the art are also constantly seeking
Look for better solution.
Summary of the invention
In view of this, on the one hand proposing a kind of adjusting method in X-ray exposure region in the embodiment of the present invention, on the other hand
Regulating device, X-ray equipment and the computer readable storage medium in a kind of X-ray exposure region are proposed, is exposed to realize to image X
The accurate adjusting in light region.
The adjusting method in a kind of X-ray exposure region proposed in the embodiment of the present invention, comprising: be in first in collimator and open
When mouth, second of patients target's object under the first image and collimator lamp closed state under collimator lamp opening state is obtained
Image；Image recognition is carried out to the first image and second image, obtains the corresponding light shadow figure of the first opening and position
In the target object figure in shadow；Shadow profile is extracted from the light shadow figure, and target pair is extracted from the target object figure
As profile；The shadow profile and the target object profile are overlapped, first object exposure area is obtained；It is needed determining
When being adjusted to the first object exposure area, according to the target object wheel in the first object exposure area
Exterior feature adjusts the shadow profile, obtains the second target light exposure region；According to second target light exposure region relative to described
First opening is adjusted to the second opening by the change in size in one target light exposure region.As it can be seen that in the embodiment of the present invention, by
In the actual aperture size of collimator be usually a determining value, it is therefore not necessary to understand between collimator and x-ray detector away from
From, it can be directly according to the change in size of first object exposure area and the second target light exposure region, proportionally adjusting collimates
The openings of sizes of device, to realize the adjusting of first object exposure area to the second target light exposure region.In addition, whole process needs
The image procossing wanted is built upon on many predictable iconic models, and processing speed is fast, and processing logic is simple, success rate
It is high.
In one embodiment, described that image recognition is carried out to the first image and second image, it obtains first and opens
The corresponding light shadow figure of mouth and the target object figure in shadow include: respectively to the first image and second image
Binary conversion treatment is carried out, the first binary image and the second binary image are obtained；It is carried out in first binary image
The identification of shadow area edge obtains collimator first and is open corresponding light shadow figure；According to first binary image and described
The otherness of second binary image obtains the administrative division map in addition to patients target's object being located in the shadow；Using described
Light shadow figure subtracts the administrative division map, obtains the target object figure being located in the shadow.In present embodiment, image recognition rate
Fastly, processing logic is simple, and success rate is high.
In one embodiment, it is described in first object exposure area according to the target object profile, adjust institute
Shadow profile is stated, obtaining the second target light exposure region includes: to be bonded target object according to exposure area with the compactness set
Principle adjusts the shadow profile, obtains the second target light exposure region.In present embodiment, by pasting exposure area as far as possible
The size for closing target object, can reduce injury caused by ionising radiation, and reduce influence of the scattered rays to final image quality.
In one embodiment, it is described in the first object exposure area according to the target object profile, adjust
The whole shadow profile further comprises before obtaining the second target light exposure region: the root in the first object exposure area
According to the target object profile judge the first object exposure area whether according to setting compactness be bonded target object, such as
Fruit is no, then execute it is described in the first object exposure area according to the target object profile, adjust the shadow profile,
The step of obtaining the second target light exposure region.In present embodiment, by adding the judgment step, it can need to adjust collimation
When device is open, then executes opening and adjust operation；When not needing to adjust collimator opening, then current first object exposure region is used
Corresponding first opening in domain carries out image scanning.
In one embodiment, the shadow profile that extracts from light shadow figure includes: to carry out de-noising to the light shadow figure
Processing and edge enhancing processing, obtain shadow profile；The target object profile that extracts from target object figure includes: to described
Target object figure carries out denoising and edge enhancing processing, obtains target object profile.In present embodiment, image outline is mentioned
Take speed fast, processing logic is simple, and success rate is high.
In one embodiment, it is described according to the second target light exposure region relative to the first object exposure area
First opening is adjusted to the second opening are as follows: according to second target light exposure region relative to described the by change in size
First opening proportional is adjusted to the second opening by the change in size in one target light exposure region.In present embodiment, pass through
It, can be according to the size in the second target light exposure region, by the according to the first opening and the proportionate relationship of first object exposure area
One opening is proportional to be adjusted to the second opening.Method is simple, and required data are less.
In one embodiment, two images are optical imagery or infrared image.As it can be seen that can be used different
Image capture technology is realized flexible.
The computer-readable recording medium storage proposed in the embodiment of the present invention has computer program, the computer program
The step of adjusting method in X-ray exposure region as described above is realized when being executed by processor.
The regulating device in the X-ray exposure region proposed in the embodiment of the present invention, comprising: image capture module is configured to
When collimator is in the first opening, first image and collimator of the target object to be checked under collimator lamp opening state are obtained
The second image under lamp closed state；Picture recognition module is configured to carry out the first image and second image
Image recognition obtains the corresponding light shadow figure of the first opening and the target object figure in shadow；Profile extraction module, by structure
It makes to extract shadow profile from the light shadow figure；Target object profile is extracted from the target object figure；Laminating module, quilt
It is configured to for the shadow profile and the target object profile being overlapped, obtains first object exposure area；Region is adjusted
Module is configured in the first object exposure area adjust the shadow profile according to the target object profile, obtain
To the second target light exposure region；Be open adjustment module, is configured to according to second target light exposure region relative to described the
First opening is adjusted to the second opening by the change in size in one target light exposure region.As it can be seen that in the embodiment of the present invention, by
In the actual aperture size of collimator be usually a determining value, it is therefore not necessary to understand between collimator and x-ray detector away from
From, it can be directly according to the change in size of first object exposure area and the second target light exposure region, proportionally adjusting collimates
The openings of sizes of device, to realize the adjusting of first object exposure area to the second target light exposure region.In addition, whole process needs
The image procossing wanted is built upon on many predictable iconic models, and processing speed is fast, and processing logic is simple, success rate
It is high.
In one embodiment, described image identification module includes: the first image processing module, and it is right respectively to be configured to
The first image and second image carry out binary conversion treatment, obtain the first binary image and the second binary image；
Second image processing module is configured to carry out the identification of shadow area edge in first binary image, obtains collimator
The corresponding light shadow figure of first opening；Third image processing module is configured to according to first binary image and described
The otherness of second binary image obtains the administrative division map in addition to target object being located in the shadow；4th image procossing
Module is configured to subtract the administrative division map using the light shadow figure, obtains the target object figure being located in the shadow.This reality
It applies in mode, image recognition rate is fast, and processing logic is simple, and success rate is high.
In one embodiment, the compactness patch that the region adjustment module is configured to according to exposure area to set
The principle for closing target object, adjusts the shadow profile, obtains the second target light exposure region.In present embodiment, exposed by making
Light region is bonded the size of target object as far as possible, can reduce injury caused by ionising radiation, and reduces scattered rays to final image
The influence of quality.
In one embodiment, the 4th pattern process module is configured to carry out denoising to the light shadow figure
And edge enhancing processing, obtain shadow profile；Denoising and edge enhancing processing are carried out to the target object figure, obtain mesh
Mark object outline.In present embodiment, contours extract speed is fast, and processing logic is simple, and success rate is high.
In one embodiment, the opening adjustment module is configured to according to the second target light exposure region relative to institute
First opening proportional is adjusted to the second opening by the change in size for stating first object exposure area.In present embodiment,
By according to the first opening and the proportionate relationship of first object exposure area, can according to the size in the second target light exposure region,
First opening proportional is adjusted to the second opening.Method is simple, and required data are less.
In one embodiment, the regulating device in the X-ray exposure region further comprises: judgment module is constructed
To judge whether the first object exposure area presses according to the target object profile in the first object exposure area
It is bonded target object according to the compactness of setting, if it is not, then indicating area adjustment module adjusts the shadow profile.This embodiment party
It, can be when needing to adjust collimator opening by adding the judgment step in formula, then execute opening and adjust operation；It does not need
When adjusting collimator opening, then image scanning is carried out using current corresponding first opening in first object exposure area.
In one embodiment, described image acquisition module is optical camera or infrared camera.As it can be seen that can be used
Different image capture modules is realized flexible.
The X-ray equipment proposed in the embodiment of the present invention, the regulating device including above-mentioned X-ray exposure region.Therefore, equally
Beneficial effect with above-mentioned apparatus.
Detailed description of the invention
Below will detailed description of the present invention preferred embodiment by referring to accompanying drawing, make those skilled in the art more
Clear above and other feature and advantage of the invention, in attached drawing:
Figure 1A is the exemplary process diagram of the adjusting method in X-ray exposure region in the embodiment of the present invention.
Figure 1B is the flow diagram of image-recognizing method in an example of the invention.
Fig. 2A and Fig. 2 B is two figures of the target object to be checked (such as patients target's organ) obtained in the embodiment of the present invention
Picture.Wherein, Fig. 2A is the first image of the patient's calf shot under collimator lamp opening state；Fig. 2 B is the closing of collimator lamp
Second image of the patient's calf shot under state.
Fig. 3 is being open proportional light shadow figure to collimator of obtaining of A and Fig. 2 B according to fig. 2 in the embodiment of the present invention.
Fig. 4 is the calf figure being located in shadow obtained in the embodiment of the present invention.
Fig. 5 is the shadow profile diagram extracted in the embodiment of the present invention.
Fig. 6 is the calf profile diagram extracted in the embodiment of the present invention.
Fig. 7 is the first object exposure area figure obtained after being overlapped in the embodiment of the present invention to Fig. 5 and Fig. 6.
Fig. 8 be in the embodiment of the present invention based on the second target light exposure adjusted region adjustment collimator be the second opening when
Patient's calf image of shooting.
Fig. 9 is the exemplary block diagram of the regulating device in X-ray exposure region in the embodiment of the present invention.
Figure 10 A and Figure 10 B are that collimator is in the patient's calf scanning figure scanned when different openings size.Its
In, Figure 10 A is patient's calf scanning figure when collimator is in the first opening, when Figure 10 B is that collimator is in the second opening
Patient's calf scanning figure.
Wherein, appended drawing reference is as follows:
110~160 steps
910 image capture modules
920 picture recognition modules
921 first image processing modules
922 second image processing modules
923 third image processing modules
924 the 4th image processing modules
930 profile extraction modules
940 laminating modules
950 region adjustment modules
960 opening adjustment modules
970 judgment modules
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, by the following examples to of the invention further detailed
It describes in detail bright.
In view of being provided with collimator lamp in collimator, and light can be by described in the on-state for the collimator lamp
Opening in collimator forms a shadow proportional to the opening in object to be checked, such as patient-side.In addition, light-illuminating
To the obtained image in examination couch surface be a characteristic determine image, and not the examination couch surface of light-illuminating have it is bright
True contrast, and since collimator opening is usually regular shape, projecting patient-side shadow area is also rule
Shape.In this way, the acquisition of image difference of the collimator lamp in the on-state and under closed state and exposure region can be utilized
The relevant characteristics of image in domain, and the adjusting in region can be exposed based on the characteristics of image.
Figure 1A is the flow diagram of the adjusting method in X-ray exposure region in the embodiment of the present invention.As shown in Figure 1A, the party
Method may include following steps:
Step 110, when collimator is in the first opening, it is based on identical camera site and angle, obtains target to be checked
Second image of the object under the first image and collimator lamp closed state under collimator lamp opening state.
In the present embodiment, target object to be checked can be the target organ of patient, can be for for doing the water mould etc. tested
Model, or may be the object machine official rank of animal.
In conjunction with A and Fig. 2 B referring to fig. 2, Fig. 2A and Fig. 2 B respectively illustrates the patients target's device obtained in the embodiment of the present invention
Two images of official, and two images were shot within the similar time.In this example, using target organ as the feelings of calf
For condition.Wherein, Fig. 2A is the first image of the patient's calf shot under collimator lamp opening state；Fig. 2 B is collimator lamp
Second image of the patient's calf shot under closed state.
When specific implementation, two images can be optical imagery, or infrared image etc..To obtain optical imagery
For situation, optical camera or camera can be set above patient.In practical application, the optical camera or camera can be fixed
On the collimator face opposite with x-ray detector.Alternatively, also can be set in other positions, as long as this step can be obtained
Two kinds of images described in 110.
Step 120, image recognition is carried out to the first image and second image, obtains the corresponding light of the first opening
Shadow figure and the target object figure in shadow.
In this step 120, specific image-recognizing method can there are many.Figure 1B shows the image recognition in an example
Method.As shown in Figure 1B, step 120 can include:
Step 121, binary conversion treatment is carried out to the first image and second image respectively, obtains the first binaryzation
Image and the second binary image.
Step 122, the identification of shadow area edge is carried out in first binary image, obtains the opening of collimator first institute
Corresponding light shadow figure.
Since light-illuminating to the obtained image in examination couch surface is the image that a characteristic determines, and shone without light
The examination couch surface penetrated has specific contrast, therefore by carrying out simple image recognition calculation in the first binary image
Method, such as the identification of shadow area edge can be partitioned into collimator first and be open corresponding light shadow figure.Fig. 3 shows the present invention
Being open proportional light shadow figure to collimator of obtaining of A and Fig. 2 B according to fig. 2 in embodiment, and Fig. 3 be by binaryzation at
The diagram of reason.
Step 123, it according to the otherness of first binary image and second binary image, obtains being located at institute
State the administrative division map in addition to target object in shadow.
Still in case where above-mentioned target object is to patient's calf, for region, that is, examination couch of non-patient's covering
Panel surface, variation whether light generates is clearly predictable, is easy to get in shadow and removes according to this variation
Administrative division map except patient's calf.
Specifically, can be believed according to Binary Image prime number word in first binary image and second binary image
The difference of number point, using image montage technology, for example, i.e. can be by image clips technology without the small pixel of difference or difference
It deletes and is processed into 0 (i.e. showing as dark place in two images), correspondingly, the big region of difference can remain (i.e.
It can get the administrative division map in addition to patient's calf in the shadow).
Step 124, the administrative division map is subtracted using the light shadow figure, obtains the target object figure being located in the shadow.
Fig. 4 shows the patient's calf figure being located in shadow obtained in the embodiment of the present invention.
In embodiment as shown in Figure 1A, the adjusting method in X-ray exposure region further include:
Step 130, shadow profile is extracted from the light shadow figure, and target object wheel is extracted from the target object figure
It is wide.
In this step 130, from image extract profile method can there are many, one of which is described below:
In order to extract shadow profile from light shadow figure, denoising can be carried out to the light shadow figure and edge enhancing is handled,
It can obtain shadow profile.Fig. 5 shows the shadow profile diagram extracted in the embodiment of the present invention.
In order to extract target object profile from the target object figure, denoising can be carried out to the target object figure
And edge enhancing processing, target object profile can be obtained.Fig. 6 shows the target object profile extracted in the embodiment of the present invention
Figure.
In embodiment as shown in Figure 1A, the adjusting method in X-ray exposure region further include:
Step 140, the shadow profile and the target object profile are overlapped, obtain first object exposure region
Domain.
Fig. 7 is shown Fig. 5 and Fig. 6 are overlapped in the embodiment of the present invention after obtained first object exposure area figure.
Later, first object exposure region can be judged according to the target object profile in the first object exposure area
Whether domain meets the X-ray minimum dose principle of setting, if it is satisfied, can be not necessarily to be adjusted first object exposure area,
Otherwise, following step 150 can be performed.Wherein, judge whether first object exposure area meets the X-ray minimum dose original of setting
It then can be and judge whether first object exposure area is to be bonded target object according to the compactness of setting, if it is, really
Surely meet X-ray minimum dose principle, otherwise, it may be determined that be unsatisfactory for X-ray minimum dose principle.
Step 150, it when determining that needs are adjusted the first object exposure area, is exposed in the first object
The shadow profile is adjusted according to the target object profile in region, obtains the second target light exposure region.
In this step, the original of target object size can be bonded as far as possible according to exposure area according to the openings of sizes of collimator
Then, i.e. X-ray minimum dose principle adjusts shadow profile.Wherein, it is bonded can be as far as possible and be pasted according to the compactness of setting
It closes.In other words, it can according to need setting exposure area surplus, and thus adjust the openings of sizes of collimator.
In embodiment as shown in Figure 1A, the adjusting method in X-ray exposure region further include:
It step 160, will according to second target light exposure region relative to first object exposure area change in size
First opening is proportional to be adjusted to the second opening.
Finally, can also be based on and step when under collimator is in the second opening and collimator lamp is in the open state
Identical camera site and angle in 110 obtain the third image of patients target's object, so as to according to light in third image
The positional relationship of shadow zone domain and target object confirm collimator change in size whether meet demand.Fig. 8 is the embodiment of the present invention
In patient's calf image for shooting when based on the second target light exposure adjusted region adjustment collimator being the second opening.Practice
In, operator can finally be confirmed by camera collimator change in size whether meet demand.
Since the actual aperture size of collimator is usually a determining value, in the present embodiment, without understanding collimation
The distance between device and x-ray detector (SID), can be directly according to first object exposure area and the second target light exposure region
Change in size, the openings of sizes of proportional adjusting collimator, to realize first object exposure area to the second target light exposure
The adjusting in region.In addition, by making exposure area be bonded target object as far as possible, such as the size of patients target's organ, electricity can be reduced
It is injured from caused by radiation, and reduces influence of the scattered rays to final image quality.In addition, the image procossing that whole process needs
It is built upon on many predictable iconic models, processing speed is fast, and processing logic is simple, and success rate is high.It, can be in practice
The type that human-computer interaction device (such as screen, keyboard, mouse) pre-selects object to be checked is passed through by operator, such as lower limb, chest
Each physical feeling to be checked such as chamber, arm.Finally, due to which the adjustment that is open is based on the second target light exposure region relative to first
The variation in target light exposure region is proportional to be adjusted, therefore adjusted result is not by the specific installation of optical camera or camera
The limitation of position.
The adjusting method in the X-ray exposure region in the embodiment of the present invention is described in detail above, below again to this
The regulating device in the X-ray exposure region in inventive embodiments is described in detail, and the device in the embodiment of the present invention can be constructed
Method in embodiment to realize the present invention, and the details not disclosed in detail in the device in the embodiment of the present invention can be found in
Corresponding description in method in the embodiment of the present invention.
Fig. 9 is the exemplary block diagram of the regulating device in X-ray exposure region in the embodiment of the present invention.As shown in figure 9, this reality
Apply the regulating device in the X-ray exposure region in example can include: image capture module 910, picture recognition module 920, contours extract
Module 930, laminating module 940, region adjustment module 950 and opening adjustment module 960.
Wherein, image capture module 910 is configured to be based on identical camera site when collimator is in the first opening
And angle, obtain the of patients target's object under the first image and collimator lamp closed state under collimator lamp opening state
Two images.
Picture recognition module 920 is configured to carry out image recognition to the first image and second image, obtains
The corresponding light shadow figure of first opening and the target object figure in shadow.
Specifically, picture recognition module 920 may particularly include: the first image processing module 921, the second image processing module
922, third image processing module 923 and the 4th image processing module 924.
Wherein, the first image processing module 921 is configured to respectively carry out the first image and second image
Binary conversion treatment obtains the first binary image and the second binary image.
Second image processing module 922 is configured to carry out the identification of shadow area edge in first binary image,
Collimator first is obtained to be open corresponding light shadow figure.
Third image processing module 923 is configured to the difference according to first binary image and the second binary image
The opposite sex obtains the administrative division map in addition to patients target's object being located in the shadow.It specifically, can be according in two images
The difference of Binary Image prime number word signaling point is obtained to be located in the shadow and is removed patients target couple using image montage technology
As outer administrative division map.
4th image processing module 924 is configured to subtract the administrative division map using the light shadow figure, obtains being located at described
Target object figure in shadow.
Profile extraction module 930 is configured to extract shadow profile from the light shadow figure；From the target object figure
Extract target object profile.
Laminating module 940 is configured to for the shadow profile and the target object profile being overlapped, and obtains first
Target light exposure region.
Region adjustment module 950 is configured in the first object exposure area according to the target object profile,
For example, according to exposure area with the principle of the compactness fitting target object set, that is, the X-ray low dose principle set is adjusted
The whole shadow profile, obtains the second target light exposure region.
Opening adjustment module 960 is configured to be exposed according to second target light exposure region relative to the first object
First opening is adjusted to the second opening by the change in size in region.For example, first opening proportional can be adjusted to
Second opening.
In one embodiment, Fig. 9 shown device can further comprise judgment module 970, be configured in superposition mould
After block 940 obtains first object exposure area, judged in the first object exposure area according to the target object profile
The first object exposure area whether according to setting compactness be bonded target object, if it is not, then indicating area adjust mould
Block 950 executes the operation of the adjustment shadow profile.
In one embodiment, profile extraction module 930 may be structured to the light shadow figure carry out denoising and
Edge enhancing processing, obtains shadow profile；Denoising and edge enhancing processing are carried out to the target object figure, obtain target
Object outline.
In one embodiment, image capture module 910 can be optical camera or camera, or infrared to take the photograph
As head etc..For example, optical camera or camera can be arranged above patient.In practical application, the optical camera or camera can
It is installed on the collimator face opposite with x-ray detector.Alternatively, also can be set in other positions.As long as can be realized figure
As the function of acquisition module 910.
Finally, can also be adopted when under collimator is in the second opening and collimator lamp is in the open state using image
Collect the image that module 910 obtains patients target's object, so as to according to shadow region in image and the position of target object pass
System confirmation collimator change in size whether meet demand.In practice, operator can finally confirm collimator by camera
Change in size whether meet demand.
A kind of X-ray equipment is also provided in the embodiment of the present invention, it may include the X-ray exposure region of any of the above-described way of realization
Regulating device.
Figure 10 A and Figure 10 B are that collimator is in the target object scanning figure scanned when different openings size.Wherein,
Figure 10 A is target object when collimator is in the first opening, i.e. patient's calf, scanning figure, Figure 10 B is in for collimator
Patient's calf scanning figure when the second opening.As can be seen that compared to the scanning figure in Figure 10 A, the exposure of the scanning figure in Figure 10 B
Light area reduction, i.e. exposure area are more bonded the size of patient's calf, correspondingly, reduce wound caused by ionising radiation
Evil, furthermore decreases influence of the scattered rays to final image quality.
As it can be seen that the technical solution in the embodiment of the present invention, whole process requires no knowledge about the information such as SID, because of collimator
Actual aperture size be usually a determining value, therefore according on image first object exposure area and the second target light exposure
The change in size ratio in region, can collimation device carry out actual size adjusting control, such as may be implemented collimator from
It is dynamic to reduce.In addition, injury caused by ionising radiation can be reduced by making exposure area be bonded the size of target object as far as possible, and
Reduce influence of the scattered rays to final image quality.In addition, the image procossing that whole process needs is built upon many can be predicted
Iconic model on, processing speed is fast, and processing logic is simple, and success rate is high.
In addition, storage is configured to hold a computer the present invention also provides a kind of computer-readable storage medium
All or part of instruction in the adjusting method in row X-ray exposure region as described herein.Specifically, it can provide equipped with storage
The system or device of medium store the software for realizing the function of any embodiment in above-described embodiment on the storage medium
Program code, and the computer (or CPU or MPU) of the system or device is made to read and execute the journey being stored in a storage medium
Sequence code.
In this case, it is real that any one of above-described embodiment can be achieved in the program code itself read from storage medium
The function of example is applied, therefore the storage medium of program code and storage program code constitutes a part of the invention.
It is configured to provide the storage medium embodiment of program code to include floppy disk, hard disk, magneto-optic disk, CD (such as CD-
ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD+RW), tape, non-volatile memory card, ROM, PC machine, hand
Machine and various smart machines etc..Selectively, can by communication network from server computer download program code.
Further, it should be apparent that not only can be by executing program code read-out by computer, but also can pass through
Operating system for calculating hands- operation etc. is set to complete partly or completely practical operation based on the instruction of program code, thus
Realize the function of any one of above-described embodiment embodiment.
Further, it is to be appreciated that the program code read by storage medium is write the expansion board in insertion computer
In in set memory or write in the memory being arranged in the expanding element being connected to a computer, be then based on journey
The instruction of sequence code makes the CPU etc. being mounted on expansion board or expanding element come execution part and whole practical operations, thus
Realize the function of any embodiment in above-described embodiment.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (16)
- The adjusting method of 1.X light exposure area characterized by comprisingWhen collimator is in the first opening, first image and standard of the target object to be checked under collimator lamp opening state are obtained The second image (110) under straight device lamp closed state；Image recognition is carried out to the first image and second image, obtain the corresponding light shadow figure of the first opening and is located at Target object figure (120) in shadow；Shadow profile is extracted from the light shadow figure, extracts target object profile (130) from the target object figure；The shadow profile and the target object profile are overlapped, first object exposure area (140) are obtained；According to the target object profile in the first object exposure area, the shadow profile is adjusted, the second mesh is obtained It marks exposure area (150)；Change in size according to second target light exposure region relative to the first object exposure area is opened described first Mouth is adjusted to the second opening (160).
- 2. the adjusting method in X-ray exposure region according to claim 1, which is characterized in that described to the first image and institute It states the second image and carries out image recognition, obtain the corresponding light shadow figure of the first opening and the target object figure in shadow (120) include:Binary conversion treatment is carried out to the first image and second image respectively, obtains the first binary image and the two or two Value image (121)；The identification of shadow area edge is carried out in first binary image, is obtained collimator first and is open corresponding light shadow figure (122)；According to the otherness of first binary image and second binary image, obtain being located at removing in the shadow Administrative division map (123) outside target object；The administrative division map is subtracted using the light shadow figure, obtains the target object figure (124) being located in the shadow.
- 3. the adjusting method in X-ray exposure region according to claim 1, which is characterized in that described to be exposed in first object According to the target object profile in region, the shadow profile is adjusted, obtaining the second target light exposure region (150) includes:According to exposure area with the principle of the compactness fitting target object set, the shadow profile is adjusted, the second mesh is obtained Mark exposure area.
- 4. the adjusting method in X-ray exposure region according to claim 1, which is characterized in that described to be extracted from light shadow figure Shadow profile (130) includes:Denoising and edge enhancing processing are carried out to the light shadow figure, obtain shadow profile；Extract from target object figure target object profile (130) include:Denoising and edge enhancing processing are carried out to the target object figure, obtain target object profile.
- 5. the adjusting method in X-ray exposure region according to claim 1, which is characterized in that described to be exposed according to the second target First opening is adjusted to the second opening (160) by change in size of the light region relative to the first object exposure area Are as follows: the change in size according to second target light exposure region relative to the first object exposure area is opened described first Mouth is proportional to be adjusted to the second opening.
- 6. the adjusting method in X-ray exposure region according to any one of claim 1 to 5, which is characterized in that described in institute It states in first object exposure area according to the target object profile, adjusts the shadow profile, obtain the second target light exposure area Before domain (150), further comprise:Whether the first object exposure area is judged according to the target object profile in the first object exposure area It is bonded target object according to the compactness of setting, if it is not, then according to institute in the first object exposure area described in executing The step of stating target object profile, adjusting the shadow profile, obtain the second target light exposure region (150).
- 7. the adjusting method in X-ray exposure region according to any one of claim 1 to 5, which is characterized in that described two Image is optical imagery or infrared image.
- 8. computer readable storage medium is stored thereon with computer program, which is characterized in that the computer program is processed The adjusting method in the X-ray exposure region as described in any one of claims 1 to 7 is realized when device executes.
- The regulating device of 9.X light exposure area characterized by comprisingImage capture module (910) is configured to obtain target object to be checked in collimator when collimator is in the first opening The second image under the first image and collimator lamp closed state under lamp opening state；Picture recognition module (920) is configured to carry out image recognition to the first image and second image, obtains the The corresponding light shadow figure of one opening and the target object figure in shadow；Profile extraction module (930) is configured to extract shadow profile from the light shadow figure；It is mentioned from the target object figure Take target object profile；Laminating module (940) is configured to for the shadow profile and the target object profile being overlapped, obtains the first mesh Mark exposure area；Region adjustment module (950) is configured in the first object exposure area be adjusted according to the target object profile The whole shadow profile, obtains the second target light exposure region；It is open adjustment module (960), is configured to according to the second target light exposure region relative to the first object exposure area Change in size, by it is described first opening be adjusted to the second opening.
- 10. the regulating device in X-ray exposure region according to claim 9, which is characterized in that described image identification module (920) include:First image processing module (921) is configured to carry out binaryzation to the first image and second image respectively Processing, obtains the first binary image and the second binary image；Second image processing module (922) is configured to carry out the identification of shadow area edge in first binary image, obtain Be open corresponding light shadow figure to collimator first；Third image processing module (923) is configured to according to first binary image and second binary image Otherness, obtain be located at the shadow in the administrative division map in addition to target object；4th image processing module (924) is configured to subtract the administrative division map using the light shadow figure, obtains being located at the light Target object figure in shadow.
- 11. the regulating device in X-ray exposure region according to claim 9, which is characterized in that the region adjustment module quilt It is configured to according to exposure area adjust the shadow profile with the principle of the compactness fitting target object set, obtain second Target light exposure region.
- 12. the regulating device in X-ray exposure region according to claim 9, which is characterized in that the profile extraction module (930) it is configured to carry out the light shadow figure denoising and edge enhancing processing, obtains shadow profile；To the target pair As figure progress denoising and edge enhancing processing, target object profile is obtained.
- 13. the regulating device in X-ray exposure region according to claim 9, which is characterized in that the opening adjustment module (960) it is configured to the change in size according to the second target light exposure region relative to the first object exposure area, it will be described First opening is proportional to be adjusted to the second opening.
- 14. the regulating device in X-ray exposure region according to any one of claim 9 to 13, which is characterized in that further Include: judgment module (970), is configured to judge institute according to the target object profile in the first object exposure area State first object exposure area whether according to setting compactness be bonded target object, if it is not, then indicating area adjustment module (950) the shadow profile is adjusted.
- 15. the regulating device in X-ray exposure region according to any one of claim 9 to 13, which is characterized in that the figure As acquisition module is optical camera or infrared camera.
- 16.X light device, which is characterized in that the adjusting including the X-ray exposure region as described in any one of claim 9 to 15 Device.
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