CN105078497B - Digitalization radiation shooting apparatus and method - Google Patents
Digitalization radiation shooting apparatus and method Download PDFInfo
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- CN105078497B CN105078497B CN201410211735.9A CN201410211735A CN105078497B CN 105078497 B CN105078497 B CN 105078497B CN 201410211735 A CN201410211735 A CN 201410211735A CN 105078497 B CN105078497 B CN 105078497B
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Abstract
The present invention is on digitalization radiation shooting device and method.According to one embodiment of the invention, a digitalization radiation shooting method includes：Selection target imaging system type；Based on the proportionality factor between original imaging system type and the target imaging system type, original image parameter combination is changed to target imaging parameter combination；And verify whether the target imaging parameter combination can use based on available technical configuration table.Combined by the imaging parameters that the imaging parameters combination of original imaging system type is changed to target original imaging system type automatically, digitalization radiation shooting apparatus and method provided in an embodiment of the present invention can greatly simplify imaging system type change process, improve the service efficiency and accuracy of digitalization radiation shooting device.
Description
Technical field
The present invention relates to radiographic viewing techniques field, more particularly to digitalization radiation shooting (DR, Digital
Radiography) apparatus and method.
Background technology
Typical digitalization radiation shooting device includes ray generator, such as X-ray emitter (also known as bulb), detector
(also known as sampler), acquisition control platform and mechanical machine parts (such as bed, arm etc.).Manufacturer is different or different types of numeral
Change radiophotography device, its detector selected is also likely to different type.
The type of detector can define according to its image forming job principle and/or the difference of critical piece constituent material.
For example, according to the difference of operation principle, detector can be roughly divided into flat panel detector (FPD：F1at Panel Detector) and
Charge coupled cell (CCD, Charge Coupled Device) detector.Wherein according to the difference of photoreceptor material, flat board detection
Device can be further divided into Amorphous silicon flat-panel detectors, Amorphous Selenium Flat-Panel Detectors again.Further, according to used flicker
The difference of body (i.e. conversion screen) material, Amorphous silicon flat-panel detectors can be divided into the detection of cesium iodide (CSI) amorphous silicon flat panel again
Device and gadolinium oxysulfide (G0S) Amorphous silicon flat-panel detectors.
Different types of detector needs to use different imaging system type (IST, Imaging System Tpye),
Imaging system type reflects the type of image acquisition software, and different imaging system types can correspond to different imaging parameters.
For example, differed using exposure parameter of the device of different types of detector used in imaging process, in image
Image Processing parameter used in processing procedure is also what is differed.Also, there is image quality in different types of detector
Difference, the occasion being applicable also differ.For example, the high detector of susceptibility can be obtained with low exit dose relative high quality into
Picture, but price is relatively expensive, thus it is usually used in the medical diagnosis on disease of child；The low detector of susceptibility need to use high exit dose, obtain
The image quality taken is relatively low, but cheap, thus is usually used in the medical diagnosis on disease of adult.In addition, for different inspections
Position is looked into, the type photodetector used is also typically different, in the hope of obtaining the image most beneficial for diagnosis with highest cost performance.
Above numerous, which is reflected on the hardware or image acquisition software of acquisition control platform, to be needed to carry out corresponding specialization design,
And carry out specialized operation.
Therefore, when combining different types of detector on same DR devices, need to set for different types of detector
It such as child, is grown up for various patient-sizeds and respectively diagnoses position, the different technologies allocation list of such as chest, brain is that is, each
The combination of kind imaging parameters.If user wants to change used detector, need the lookup in technical configuration table corresponding not
With the configuration of material for detector such as GOS, CSI or other conventional film.If the DR devices also include different ray generators,
Also need to determine whether selected imaging parameters are supported by the generator type.User must be manually adjustment its want change
Detector and relevant art.This manually adjust not only takes but also required the technology of user's accurate memory all kinds detector
Parameter, such as susceptibility and material type.In fact, user is replacing to desired technology, it is necessary to spend several in the application
Hour even more long time, virtually add the stand-by period of those who are investigated.Accordingly, in medical field so that originally tight
Resource problem it is more prominent, and in other fields such as biology, the long review time to inspected object, such as matching somebody with somebody for animal
Conjunction ability is also serious test.
The content of the invention
The embodiment of the present invention provides digitalization radiation shooting apparatus and method, and it can be automatic and unartificial by original image system
The imaging parameters combination of system type is changed to the imaging parameters combination of target original imaging system type.
According to one embodiment of the invention, a digitalization radiation shooting method includes：Selection target imaging system type；Base
Proportionality factor between original imaging system type and the target imaging system type, original image parameter combination is changed
For target imaging parameter combination；And verify whether the target imaging parameter combination can use based on available technical configuration table.
In the section Example of the present invention, the proportionality factor is the quick of the detector corresponding to original imaging system type
Ratio between the susceptibility of sensitivity detector corresponding with target imaging system type.Original image parameter combination is changed to
Target imaging parameter combination further comprising make tube current in original image parameter combination and time for exposure product and ratio because
Number is multiplied to find out immediate tube current and time for exposure product step footpath value.Wherein in tube current or time for exposure exposure mode
Under, all supports tube current parameter with support exposure time parameter combination in search downwards immediate tube current with
Time for exposure product step footpath value.Under tube current and time for exposure product exposure mode, in all at user option tube currents
With immediate tube current and time for exposure product step footpath value are searched in the product parameter of time for exposure downwards.In automatic exposure control
Under the exposure mode of system, immediate tube current and time for exposure product step footpath value are searched upwards.By original image parameter combination
Be changed to target imaging parameter combination further include according to immediate tube current and time for exposure product step footpath value with it is original
Imaging parameters combination in tube current calculates and selects the time for exposure, based on immediate tube current and time product step footpath be worth and
The selected time for exposure searches immediate imaging parameters combination.In addition, in some embodiments of the invention, will be original
When imaging parameters combination is changed to target imaging parameter combination, the small retic(u)le of prioritizing selection.If the imaging parameters combination found
Beyond ray generator thresholding, then ray generator thresholding is selected as the target imaging parameter combination.
Embodiments of the invention also provide a digitalization radiation shooting device, comprising：Selection device, imaging system type become
More device, and checking device.Selection device is configured to selection target imaging system type, imaging system type change device warp
Configuration is with based on the proportionality factor between original imaging system type and target imaging system type, by original image parameter combination
It is changed to target imaging parameter combination；And verify device and be then configured to verify the target imaging based on available technical configuration table
Whether parameter combination can use.
By the way that the imaging parameters combination of original imaging system type is changed into target original imaging system type automatically
Imaging parameters combine, and digitalization radiation shooting apparatus and method provided in an embodiment of the present invention can greatly simplify imaging system type
Change process, improve the service efficiency and accuracy of digitalization radiation shooting device.
Brief description of the drawings
It is the structural representation of digitalization radiation shooting device according to an embodiment of the invention shown in Fig. 1
It is the schematic flow sheet of digitalization radiation shooting method according to an embodiment of the invention shown in Fig. 2
Be shown in Fig. 3 in digitalization radiation shooting method according to an embodiment of the invention based on proportionality factor by it is original into
As parameter combination is changed to the schematic flow sheet of target imaging parameter combination
Embodiment
Spirit for a better understanding of the present invention, it is made furtherly below in conjunction with the part preferred embodiment of the present invention
It is bright.
One multi-mode digital radiophotography process for typically combining different detectors mainly includes：User, such as
Radiologist selects the imaging system type to be used according to the profile size of those who are investigated and position to be checked, according to institute
The imaging system type of selection adjusts corresponding imaging parameters combination, i.e., the configuration of overall imaging parameters.For what is tentatively selected
Imaging parameters combine, and user also needs to confirm whether it can use according to the hardware index of ray generator.This seems simple
Process take time and effort actually, and have very high requirement to the professional ability of user.In hospital, substantially only dept. of radiology
The archiater of room can perform.
Digitalization radiation shooting apparatus and method provided in an embodiment of the present invention then can change above-mentioned imaging system type
No longer turn into challenge, the optimization of imaging parameters combination is also ensure that while shortening the time.
It is the structural representation of digitalization radiation shooting device 10 according to an embodiment of the invention shown in Fig. 1.Such as Fig. 1 institutes
Show, the digitalization radiation shooting device 10 mainly forms comprising following sub-device：Selection device 12, imaging system type become
More device 14 and checking device 16.Wherein, selection device 12 is configured to selection target imaging system type；Imaging system type
Change device 14 is configured to based on the proportionality factor between original imaging system type and the target imaging system type, will
Original image parameter combination is changed to target imaging parameter combination；And verify device 16 and be configured to based on available technical configuration table
Verify whether the target imaging parameter combination can use.As it is known by the man skilled in the art, imaging parameters combination is mainly comprising pipe
Electric current (tube current) (generally in terms of ma), time for exposure (generally in terms of ms) or the product of tube current and time for exposure
(generally in terms of mas=ma*ms), focus board size, auto-exposure control (AEC, Automatic Exposure Control)
BACKUP TIME etc..
It is the schematic flow sheet of digitalization radiation shooting method according to an embodiment of the invention shown in Fig. 2.The digitlization
Radiographic methods can be as shown in Figure 1 digitalization radiation shooting device perform.
As shown in Fig. 2 this method mainly includes：The selection target imaging system type of selection device 12 in step 20.Tool
Body, for a person to be checked, user, as radiologist can be directed to its appearance and size, such as adult and infant, and it is to be checked
The type photodetector used is wanted in the position looked into, such as chest, selection；And then the imaging material based on the detector is chosen to as system
System type simultaneously transfers to selection device 12 to realize.In target imaging system type, storage makes originally with digitalization radiation shooting device
During imaging system type, i.e. original imaging system type difference, would have to be configured to according to target imaging system type
As parameter combination.In the present embodiment, the task automatically, can be completed fast and accurately in step 22.In step 22, into
As system type change device 14 is understood based on the proportionality factor between original imaging system type and target imaging system type, general
Original image parameter combination is changed to target imaging parameter combination.The specific change embodiment referred to repeats after holding.Ratio because
Number can be the susceptibility (sensitivity) and target imaging of the detector (not shown) corresponding to original imaging system type
Ratio between the susceptibility of detector corresponding to system type (not shown).For the sake of convenient, digitalization radiation shooting can be filled
The susceptibility number of each detector in 10 is put to determine and distribute a digital series, so as to obtain easily and fast
The proportionality factor gone out between different type detector.For example, the digital series of the susceptibility of GOS flat panel detectors is set to
1.000, and the digital series of the susceptibility of CSI flat panel detectors is set to 0.800, then from original corresponding to GOS flat panel detectors
When imaging system type is changed to target imaging system type corresponding to CSI flat panel detectors, the ratio based on susceptibility determination
Factor is 0.8.It will be appreciated by those skilled in the art that different production firms can have different settings to advise for proportionality factor
Then, can be obtained by its technical staff according to its own product performance, here is omitted.Verify that device 16 can base in step 24
Whether can use in available technical configuration table checking target imaging parameter combination, because obtained target imaging parameter combination may be simultaneously
Do not supported by the ray generator of the digitalization radiation shooting device 10.
Be shown in Fig. 3 in digitalization radiation shooting method according to an embodiment of the invention based on proportionality factor by it is original into
As parameter combination is changed to the schematic flow sheet of target imaging parameter combination, it is applicable to the step 22 in Fig. 2.
In the present embodiment, exposure factor may be selected to be based on the parameter that proportionality factor changes first.In step 30, original is made
Tube current in the combination of beginning imaging parameters is multiplied to find out immediate tube current with exposing with time for exposure product and proportionality factor
Product step footpath value (station) between light time.For each imaging parameters, the console (not shown) of digitalization radiation shooting device 10
In be stored with the list (long table) of its all supported imaging parameters and the list (short table) of at user option imaging parameters,
And " step footpath value " is then each specific value of each parameter in corresponding table.The characteristics of " step footpath ", causes original image parameter combination
In the tube current tube current that is multiplied to obtain with time for exposure product with proportionality factor tend not to arranging with time for exposure product
Corresponding exact value is found in table, it is therefore desirable to search immediate tube current and time for exposure product step footpath value.For difference
Exposure mode, specific lookup method can be different.For example, under tube current or time for exposure exposure mode, the institute in long table
Have in the tube current parameter of support and the combination for the exposure time parameter supported and search (round down) immediate pipe downwards
Electric current and time for exposure product step footpath value.Under tube current and time for exposure product exposure mode, all at user option
Immediate tube current and time for exposure product step footpath value are searched in the product parameter of tube current and time for exposure downwards.Automatic
Under the exposure mode of spectrum assignment, upward (round up) searches immediate tube current and time for exposure product step footpath value.Institute
Meaning " searching downwards ", " searching upwards " are for reducing dosage (exit dose) or improving dosage.For example, in normal conditions
Under, for high dose, low dosage is more preferably to select.Thus in search procedure using " search downwards " and reduce dosage as
Principle searches immediate tube current and time for exposure product step footpath value.Particularly, under the exposure mode of auto-exposure control,
What tube current and time for exposure product defined is the BACKUP TIME (backup time) of auto-exposure control, such as art technology
The BACKUP TIME of auto-exposure control known to personnel is to automatically cut off a little.Automatically cutting off a little, even if being not reaching to target, exposure
Also will stop.This certainly will need that check object is implemented to expose again, and injury of such multiexposure, multiple exposure to check object is past
It is past bigger than with the single exposure of larger dose.Therefore, under the exposure mode of auto-exposure control, when " searching upwards " backs up
Between to improve dosage can effectively avoid the generation of re-expose.
Digitalization radiation shooting device 10 can judge immediate tube current and the time for exposure found in the step 32
Whether product step footpath value exceeds the threshold value of ray generator, if need to notify if user can not use ratio factor by original
Beginning imaging system type is changed to target imaging system type.
In the immediate tube current found and feelings of the time for exposure product step footpath value without departing from ray generator thresholding
Under condition, in step 34, according in the immediate tube current and time for exposure product step footpath value and original image parameter combination
Tube current calculate and select the time for exposure, selection when need to avoid to ray generator performance, such as life-span prejudicial parameter.
In step 36, can be continued to search for time product step footpath value and selected time for exposure based on immediate tube current other
Imaging parameters are combined with finding immediate imaging parameters, it will be appreciated by those skilled in the art that different exposure modes has difference
Technical parameter list, and some parameters can't may also adjust, and here is omitted.Found for the step closest
Imaging parameters combination, further account for it if appropriate for small size retic(u)le.Because small retic(u)le can produce better image matter
Amount, the meeting small retic(u)le of prioritizing selection of selection device 12, large focal spot plate can be just selected when only large scale retic(u)le is available.For super
The imaging parameters combination of emergent ray generator thresholding, then can select ray generator thresholding and notify user.
The digitalization radiation shooting apparatus and method of the present invention, pass through original imaging system type and target imaging system class
The use of proportionality factor between type, it can automatically, fast and accurately realize the change between different imaging system types.And it is avoided that
The parameter configuration of ray generator may be damaged, protection digitalization radiation shooting device is without prejudice.
The technology contents and technical characterstic of the present invention have revealed that as above, but those skilled in the art still may base
Make a variety of replacements and modification without departing substantially from spirit of the present invention in teachings of the present invention and announcement.Therefore, protection model of the invention
Content disclosed in embodiment should be not limited to by enclosing, and should include various replacements and modification without departing substantially from the present invention, and be this patent
Application claims are covered.
Claims (18)
1. a kind of digitalization radiation shooting method, comprising：
Selection target imaging system type；
Based on the proportionality factor between original imaging system type and the target imaging system type, by original image parameter group
Conjunction is changed to target imaging parameter combination；And
Verify whether the target imaging parameter combination can use based on available technical configuration table,
Wherein described proportionality factor be the detector corresponding to the original imaging system type susceptibility and the target into
Ratio between the susceptibility of detector as corresponding to system type.
2. digitalization radiation shooting method as claimed in claim 1, wherein described be changed to mesh by original image parameter combination
The combination of mark imaging parameters further comprising make tube current in the original image parameter combination and time for exposure product with it is described
Proportionality factor is multiplied to find out immediate tube current and time for exposure product step footpath value.
3. digitalization radiation shooting method as claimed in claim 2, wherein under tube current or time for exposure exposure mode,
The tube current parameter of all supports in the combination for the exposure time parameter supported with searching downwards immediate tube current and exposure
Time product step footpath value.
4. digitalization radiation shooting method as claimed in claim 2, wherein in tube current and time for exposure product exposure mode
Under, search immediate tube current and exposure downwards in the product parameter of all at user option tube currents and time for exposure
Time product step footpath value.
5. digitalization radiation shooting method as claimed in claim 2, wherein under the exposure mode of auto-exposure control, upwards
Search immediate tube current and time for exposure product step footpath value.
6. digitalization radiation shooting method as claimed in claim 2, wherein described be changed to mesh by original image parameter combination
Mark imaging parameters combination further include according to the immediate tube current and time for exposure product walk footpath be worth with it is described original
Tube current in imaging parameters combination calculates and selects the time for exposure.
7. digitalization radiation shooting method as claimed in claim 6, wherein described be changed to mesh by original image parameter combination
Imaging parameters combination is marked further to include based on the immediate tube current and time product step footpath value and selected exposure
Time searches immediate imaging parameters combination.
8. digitalization radiation shooting method as claimed in claim 1, wherein the original image parameter combination is changed into institute
When stating target imaging parameter combination, the small retic(u)le of prioritizing selection.
9. digitalization radiation shooting method as claimed in claim 1, wherein the original image parameter combination is changed into institute
When stating target imaging parameter combination, if the imaging parameters combination found exceeds ray generator thresholding, ray is selected
Device thresholding is as the target imaging parameter combination.
10. a kind of digitalization radiation shooting device, comprising：
Selection device, it is configured to selection target imaging system type；
Imaging system type change device, be configured to based on original imaging system type and the target imaging system type it
Between proportionality factor, original image parameter combination is changed to target imaging parameter combination；And
Device is verified, is configured to verify whether the target imaging parameter combination can use based on available technical configuration table,
Wherein described proportionality factor is the susceptibility of detector corresponding to the original imaging system type and the target imaging
Ratio between the susceptibility of detector corresponding to system type.
11. digitalization radiation shooting device as claimed in claim 10, wherein the imaging system type change device enters one
Step is configured so that the tube current in the original image parameter combination is multiplied to time for exposure product and the proportionality factor
Find out immediate tube current and time for exposure product step footpath value.
12. digitalization radiation shooting device as claimed in claim 11, wherein under tube current or time for exposure exposure mode,
In the tube current parameter of all supports with searching immediate tube current downwards with exposing in the combination for the exposure time parameter supported
Product step footpath value between light time.
13. digitalization radiation shooting device as claimed in claim 11, wherein in the exposure of tube current and time for exposure product
Under pattern, searched downwards in the product parameter of all at user option tube currents and time for exposure immediate tube current with
Time for exposure product step footpath value.
14. digitalization radiation shooting device as claimed in claim 11, wherein under the exposure mode of auto-exposure control, to
It is upper to search immediate tube current and time for exposure product step footpath value.
15. digitalization radiation shooting device as claimed in claim 11, wherein the imaging system type change device enters one
Step is configured to according in the immediate tube current and time for exposure product step footpath value and the original image parameter combination
Tube current calculate and select the time for exposure.
16. digitalization radiation shooting device as claimed in claim 15, wherein the imaging system type change device enters one
Step is configured to search most based on the immediate tube current and time for exposure product step footpath value and selected time for exposure
Close imaging parameters combination.
17. digitalization radiation shooting device as claimed in claim 10, wherein the imaging system type change device is through matching somebody with somebody
Put with when the original image parameter combination is changed to the target imaging parameter combination, the small retic(u)le of prioritizing selection.
18. digitalization radiation shooting device as claimed in claim 10, wherein the original image parameter combination is changed to
During the target imaging parameter combination, if the imaging parameters combination found exceeds ray generator thresholding, ray hair is selected
Raw device thresholding is as the target imaging parameter combination.
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