CN107811646A - Have an X-rayed exposal control method, device and X-ray production apparatus - Google Patents
Have an X-rayed exposal control method, device and X-ray production apparatus Download PDFInfo
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- CN107811646A CN107811646A CN201711218942.7A CN201711218942A CN107811646A CN 107811646 A CN107811646 A CN 107811646A CN 201711218942 A CN201711218942 A CN 201711218942A CN 107811646 A CN107811646 A CN 107811646A
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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
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4411—Constructional features of apparatus for radiation diagnosis the apparatus being modular
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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
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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
Abstract
The embodiment of the invention discloses one kind perspective exposal control method, device and X-ray production apparatus, the control method to include：Obtain the brightness of destination object nth frame image；The equivalent of destination object described in luminance acquisition based on object brightness and the nth frame image is thick；Determined in body thickness model and the thick exposure parameter matched of the equivalent of the destination object；The destination object is had an X-rayed based on the exposure parameter.Perspective exposal control method provided in an embodiment of the present invention can rapidly obtain the object brightness image for meeting clinical demand, largely reduce the dose of radiation during perspective.
Description
Technical field
The present embodiments relate to medicine equipment control field, more particularly to a kind of perspective exposal control method, device and X
X-ray machine X.
Background technology
In medical X-ray perspective field, diagnoses and treatment is carried out to patient commonly using C-arm x-ray machine.Such as in bone
In section's operation, C-arm x-ray machine positioning operation position is frequently utilized that.
At present, existing perspective exposure control technic has two kinds of control models of perspective and exposure.Wherein, perspective mode is general
It is the transmitting X-ray pulse of continuous multiple frames, the time of X-ray radiation is controlled by doctor oneself, generally steps on perspective pin from doctor
Lock unclamps backpedalling brake to after seeing the image for meeting its demand, typically has 2~3s time, in this process, it will usually produce
Raw image at least more than 20 frames.But doctor only may be paid close attention to a frame or a few two field pictures in many cases, such as in orthopaedics
In operation, orthopedist is less to be monitored by having an X-rayed for a long time to entering nail process, typically has an X-rayed one before nail is entered
It is secondary, the state of operative site before observing into nail, had an X-rayed again once after entering nail, observe into nail result, the image having an X-rayed twice is entered
Row comparative assessment.Therefore for orthopedist, it is and non-continuous dynamic concern is primarily with the image after entering before nail and entering nail
The perspective process of state.Obviously for above-mentioned application scenarios, the fluoroscopy images for gathering multiframe have little significance, and can to suffer from
Person is by unnecessary radiation.And for exposure mode, although the image finally shown only has 1 frame, exposure mode
The dose of radiation of lower single frames X ray is usually much larger than the dose of radiation of single frames X ray under perspective mode, therefore, using exposure mould
The dose of radiation of formula collection image is higher.Therefore, foregoing two kinds of exposure modes, dose of radiation are higher.
The content of the invention
The embodiments of the invention provide one kind perspective exposal control method, device and X-ray production apparatus, effectively reduce and had an X-rayed
Dose of radiation in journey.
In a first aspect, the embodiments of the invention provide one kind to have an X-rayed exposal control method, this method includes：
The brightness of destination object nth frame image is obtained, wherein, N is more than or equal to 1；
The equivalent of destination object described in luminance acquisition based on object brightness and the nth frame image is thick；
Determined in body thickness model and the thick exposure parameter matched of the equivalent of the destination object；
The destination object is had an X-rayed based on the exposure parameter.
Further, it is described perspective is carried out to the destination object based on the exposure parameter to include：Based on the exposure
Parameter stops unwrapping wire after M exposed frames are carried out to the destination object, and wherein M is less than or equal to 5.
Further, destination object described in the luminance acquisition based on object brightness and the nth frame image is equivalent
Body thickness includes：
Obtain the brightness of the nth frame image and the ratio of the object brightness；
Based on the thick acquisition mesh of body corresponding with the exposure parameter of the nth frame image in the ratio and body thickness model
The equivalent for marking object is thick.
Further, methods described also includes：The body thickness model is obtained, the acquisition body thickness model includes：
When the brightness of image of acquisition different-thickness body mould reaches object brightness, corresponding exposure parameter；
The body mould thickness and corresponding exposure parameter are fitted.
Further, the exposure parameter comprises at least：Have an X-rayed voltage, fluoroscopy current, filtration model, field size and source
One kind in image distance.
Second aspect, the embodiments of the invention provide one kind to have an X-rayed exposure-control device, and described device includes：
Acquisition module, for obtaining the brightness of destination object nth frame image, wherein, N is more than or equal to 1；
Computing module, for the equivalent of destination object described in the luminance acquisition based on object brightness and the nth frame image
Body is thick；
Determining module, for being determined in body thickness model and the thick exposure parameter matched of the equivalent of the destination object；
Module is had an X-rayed, for being had an X-rayed based on the exposure parameter to the destination object.
Further, the perspective module includes：Exposure control unit, the exposure control unit are used to be based on the exposure
Optical parameter stops unwrapping wire after M exposed frames are carried out to the destination object, and wherein M is less than or equal to 5.
Further, the computing module includes：
Ratio acquiring unit, for obtaining the brightness of the nth frame image and the ratio of the object brightness；
Equivalent thickness acquiring unit, for being joined based on the exposure in the ratio and body thickness model with the nth frame image
The thick equivalent for obtaining the destination object of body corresponding to number is thick.
Further, described device also includes：
Body thickness model acquisition module, the body thickness model acquisition module include：
Exposure parameter acquiring unit is right with it when the brightness of image for obtaining different-thickness body mould reaches object brightness
The exposure parameter answered；
Fitting unit, for being fitted to the body mould thickness and corresponding exposure parameter.
The third aspect, the embodiments of the invention provide a kind of X-ray production apparatus, including the perspective exposure that above-mentioned second aspect provides
Control device.
Perspective exposal control method provided in an embodiment of the present invention, by obtaining the brightness of destination object nth frame image, base
It is thick in object brightness and the equivalent of the luminance acquisition destination object of nth frame image, so determine in body thickness model with it is described
The exposure parameter of the thick matching of the equivalent of destination object, and the destination object is had an X-rayed based on the exposure parameter, can
Rapidly to obtain the object brightness image for meeting clinical demand, the radiation agent during perspective is largely reduced
Amount.
Brief description of the drawings
Fig. 1 is a kind of perspective exposal control method schematic flow sheet that the embodiment of the present invention one provides；
Fig. 2 is a kind of perspective exposal control method schematic flow sheet that the embodiment of the present invention two provides；
Fig. 3 is a kind of structural representation for perspective exposure-control device that the embodiment of the present invention three provides.
Embodiment
The present invention is described in further detail with reference to the accompanying drawings and examples.It is understood that this place is retouched
The specific embodiment stated is used only for explaining the present invention, rather than limitation of the invention.It also should be noted that in order to just
Part related to the present invention rather than entire infrastructure are illustrate only in description, accompanying drawing.
It should be mentioned that some exemplary embodiments are described as before exemplary embodiment is discussed in greater detail
The processing described as flow chart or method.Although every step is described as the processing of order by flow chart, therein to be permitted
Multi-step can be implemented concurrently, concomitantly or simultaneously.In addition, the order of every step can be rearranged.When it
The processing can be terminated when step is completed, it is also possible to the additional step being not included in accompanying drawing.The processing
It can correspond to method, function, code, subroutine, subprogram etc..
Embodiment one
As being referred in background technology, when gathering image using existing perspective exposure mode using C-arm x-ray machine,
Dose of radiation is higher.
Those skilled in the art know that different destination objects is different to the attenuation degree of X ray, such as adipose tissue pair
The decay of X ray is small, and decay of the musculature to X ray is big.If destination object is bigger to the attenuation degree of X ray, adopt
The brightness of image collected is darker (gray value is smaller), if destination object is smaller to the attenuation degree of X ray, the figure collected
Image brightness is brighter (gray value is bigger), and the image under both of these case all causes because desired object brightness is not reaching to
Fogging image.In order to obtain the image of object brightness, if brightness of image is partially dark, increasing x-ray dose is needed (to pass through exposure
State modulator), if brightness of image is partially bright, need to reduce x-ray dose.Therefore according to decay journey of the destination object to X ray
Reasonable adjustment x-ray dose is spent, can quickly obtain the image of object brightness.
Fig. 1 is a kind of perspective exposal control method schematic flow sheet that the embodiment of the present invention one provides, and the present embodiment provides
Perspective exposal control method be applicable to have an X-rayed destination object (be usually patient) by C-arm x-ray machine, such as：
Operative site is positioned suitable for orthopedist, this method can be performed by perspective exposure-control device, described device
It can be realized by way of software and/or hardware.Shown in Figure 1, the control method specifically includes as follows：
Step 110, the brightness for obtaining destination object nth frame image, wherein, N is more than or equal to 1.
Wherein, the destination object is often referred to patient, can specifically refer to some position or the organ of patient, such as hand,
Leg, belly or chest etc..
Typically, the collection of image since the 1st frame, in the present embodiment, is said by taking N=1 as an example during perspective
It is bright.
For the 1st two field picture, its exposure parameter is usually default exposure parameter, namely with default exposure parameter to institute
State destination object to be had an X-rayed, and then obtain the brightness of the two field picture of destination object the 1st.
The exposure parameter comprises at least：Voltage, fluoroscopy current, filtration model, field size and source image are had an X-rayed away from (SID)
In one kind.Wherein, perspective voltage refers to produce the voltage between the negative electrode and anode of the X ray bulb of X ray；Perspective electricity
Stream refers to the electric current between the negative electrode and anode of X ray bulb；Filtration is a kind of for filtering underproof X-ray beam, and it is qualified to make
The material that is had to pass through before X ray bulb is projected of X-ray beam, generally have aluminium Al filtrations, copper Cu filtrations, and different model
Filtration thickness it is different, the dosage of the X ray passed through is also different；Field size is also a kind of adjustable parameter, and launched field then obtains greatly
Image in the tissue that can see it is more, but poor definition, launched field is small, and the tissue that can be seen in obtained image lacks, but clearly
Clear degree is high.
The equivalent of destination object described in step 120, the luminance acquisition based on object brightness and the nth frame image is thick.
Specifically, it can be searched in the body thickness model previously generated：Identical with the exposure parameter of the 1st two field picture, image is bright
Spend for object brightness when corresponding body mould thickness be how many, find corresponding to after body mould thickness, combining target brightness with it is described
The brightness ratio of 1st two field picture determines that equivalent of the destination object in body thickness model is thick, and specific determination process can refer to
Embodiment two.
Step 130, determined and the thick exposure parameter matched of the equivalent of the destination object in body thickness model.
In the present embodiment, the body thickness model can be brightness of image when being object brightness, body mould thickness and exposure parameter
Between corresponding relation.Exemplarily, the body thickness model is obtained to specifically include：
When the brightness of image of acquisition different-thickness body mould reaches object brightness, corresponding exposure parameter；
The body mould thickness and corresponding exposure parameter are fitted；
The functional relation being fitted between obtained body mould thickness and exposure parameter is the body thickness model.Wherein, obtain
When the brightness of image of different-thickness body mould reaches object brightness, corresponding exposure parameter can be by respectively to different thickness
The body mould of degree is had an X-rayed to obtain, or can also be by directly obtaining between the body mould of existing different-thickness and exposure parameter
Mapping table obtain.In the present embodiment, the water mould or PMMA body suitable to X-ray attenuation degree with human body can be used
When the multiple perspective of mould progress reaches object brightness to obtain the image of different-thickness body mould, corresponding exposure parameter.
By being determined directly in the body thickness model previously generated and the thick exposure matched of the equivalent of the destination object
Parameter, it is possible to achieve quickly by the purpose of the brightness adjustment of current frame image to object brightness, shorten the perspective time, reduce
Dose of radiation during perspective.
Step 140, based on the exposure parameter destination object is had an X-rayed.
Exemplarily, carrying out perspective to the destination object based on the exposure parameter includes：Based on the exposure parameter
Stop unwrapping wire after M exposed frames are carried out to the destination object, wherein M is less than or equal to 5.
In practical application, it may be caused due to some reasons (such as X ray conversion ratio, picture noise, measurement error etc.)
The brightness of image for once being had an X-rayed to obtain to destination object based on the exposure parameter fails to reach the set goal brightness, this
When the equivalent of destination object thickness can be obtained with object brightness according to the intrinsic brilliance of current frame image, and then in body
Determined again in thick model with the exposure parameter that matches of equivalent thickness, and based on determining again with the destination object etc.
The exposure parameter of the thick matching of effect body is had an X-rayed, and then it is bright make it that the intrinsic brilliance for having an X-rayed obtained image moves closer to target
Degree, stop unwrapping wire when the intrinsic brilliance for the image that perspective obtains reaches unanimity with the object brightness, that is, stop perspective.Through more
Secondary experiment is found, using perspective exposal control method provided in an embodiment of the present invention, is generally carried out 3~4 frames to destination object and is exposed
It may be such that the intrinsic brilliance of described image reaches unanimity with object brightness after light.
It should be noted that the equivalent of the destination object got every time is thick and differs, because obtaining equivalent
The intrinsic brilliance of every two field picture of body thickness institute foundation is different.Specific acquisition process can detailed in Example two.In the present embodiment,
The brightness of the two field picture of destination object first is obtained by presetting exposure parameter, is then based on object brightness and first two field picture
Luminance acquisition described in equivalent of the destination object in body thickness model it is thick, destination object is characterized to X ray with equivalent thickness
Attenuation degree, further in body thickness model according to equivalent thickness come determine be best suitable for current target object exposure join
Number, is had an X-rayed to destination object based on the exposure parameter determined, can quickly obtain object brightness image, and then reducing
The image for meeting actual clinical demand is also obtain while x-ray dose during whole perspective.
Perspective exposal control method provided in an embodiment of the present invention is used in C-arm x-ray machine, once doctor steps on pin
Lock, C-arm x-ray machine starts unwrapping wire, and (default exposure parameter and object brightness are set in advance in C with default exposure parameter
In shape arm X-ray production apparatus) destination object is had an X-rayed, obtain the brightness of the 1st two field picture, and then based on object brightness and described the
The equivalent of destination object described in the luminance acquisition of 1 two field picture is thick, and determine in body thickness model with the destination object etc.
The exposure parameter of the thick matching of body is imitated, is finally based on the thick exposure parameter matched of the equivalent of the destination object to the target
Object is had an X-rayed, and when the brightness of current frame image reaches object brightness, then stops unwrapping wire immediately, that is, stops perspective, entirely
Process is automatically performed by C-arm x-ray machine, the adjustment of exposure parameter, the stopping of perspective etc. during perspective, does not need doctor
Intervention, automation and the intelligence degree of C-arm x-ray machine are improved to a certain extent, in addition, with respect to artificial
Backpedalling brake is controlled to stop the mode of unwrapping wire, it is possible to reduce about 85% dose of radiation.And in practical application, using of the invention real
The perspective exposal control method of example offer is applied, obtaining the image of object brightness at most needs the exposure of the frame of carry out 3~4, i.e., at most
Perspective can be automatically stopped by needing the radioscopic image of the frame of collection 3~4.
Embodiment two
Fig. 2 is the perspective exposal control method schematic flow sheet that the embodiment of the present invention two provides, in the technical side of embodiment one
On the basis of case, the present embodiment is to step 120 " target pair described in the luminance acquisition based on object brightness and the nth frame image
The equivalent of elephant is thick " further optimization has been carried out, the benefit of optimization can quickly and accurately obtain the destination object
It is thick to imitate body, and then quickly obtains the image of object brightness, to shorten the perspective time, reduces the dose of radiation during perspective.Tool
Body is shown in Figure 2, and methods described includes：
Step 210, the brightness for obtaining destination object nth frame image, wherein, N is more than or equal to 1.
Step 220, the brightness for obtaining the nth frame image and the ratio of the object brightness.
Step 230, obtain institute based on corresponding with the exposure parameter of nth frame image body in the ratio and body thickness model is thick
The equivalent for stating destination object is thick.
Step 240, determined and the thick exposure parameter matched of the equivalent of the destination object in body thickness model.
Step 250, based on the exposure parameter destination object is had an X-rayed.
Specifically, the body thickness model refers on the premise of obtaining object brightness image, body mould thickness is penetrated with X during perspective
Corresponding relation between line dosage, because x-ray dose can be controlled by exposure parameter, therefore the body thickness model enters
One step can be brightness of image when being object brightness, the corresponding relation between body mould thickness and exposure parameter.Exemplarily, exposure is worked as
When optical parameter is has an X-rayed voltage and fluoroscopy current, the body thickness model may refer to that shown in table 1, object brightness is shown in table 1
For 20 when, the corresponding relation between body mould thickness and exposure parameter, such as：When body mould thickness is 5mm, perspective voltage is 40KV, thoroughly
Electric current is regarded as 10mA；When body mould thickness is 10mm, perspective voltage is 60KV, fluoroscopy current 15mA.
The body thickness model of table 1
| Have an X-rayed voltage/KV | 40 | 45 | 50 | 60 | 80 |
| Fluoroscopy current/mA | 10 | 11 | 12 | 15 | 20 |
| Body is thick | 5 | 6.75 | 7.5 | 10 | 15 |
It should be noted that the numerical value in above-mentioned table 1 is merely given as examples, it is not the numerical value actually used in perspective,
The numerical value of actual use can be obtained by testing.On the other hand, in body thickness model, exposure parameter except can be perspective voltage,
Outside fluoroscopy current, others can also be included such as：SID, field size etc..It is readily appreciated that, exposure parameter is more, present frame
Error between the intrinsic brilliance and object brightness of image is just smaller, current frame image is reached time needed for object brightness just
It is shorter, namely the perspective frame number reached needed for the image of object brightness is fewer, and then the dose of radiation during having an X-rayed is got over
It is small.
Destination object described in the above-mentioned luminance acquisition based on object brightness and the nth frame image illustrated below etc.
The thick calculating process of body is imitated, the present embodiment still illustrates by taking N=1 as an example：
It is by 60KV perspective voltage, 15mA fluoroscopy current, object brightness of the default exposure parameter of the 1st two field picture
20, exemplified by the brightness of the 1st two field picture of the destination object is 15, brightness and the object brightness of the 1st two field picture are calculated first
Ratio is 15/20=0.75, is 60KV's with the default exposure parameter (60,15) by the body thickness model shown in above-mentioned table 1
The body mould thickness that perspective voltage matches with 15mA fluoroscopy current is 10mm, the body mould thickness (10mm) of the matching is multiplied by described
Equivalent of the result (10*0.75=7.5) of ratio (0.75) as the destination object in body thickness model is thick, i.e., described etc.
It is 7.5mm to imitate body thickness, and the exposure matched with the equivalent thick (7.5mm) is further searched from the body thickness model shown in table 1
Parameter is (50,12), and the fluoroscopy current of the perspective voltage and 12mA that are finally based on 50KV is had an X-rayed to the destination object.It is real
In the application of border, it is possible that the obtained after being had an X-rayed with the exposure parameter of above-mentioned (50,12) to the destination object the 2nd
Two field picture brightness does not reach object brightness 20, and e.g., the intrinsic brilliance for the 2nd two field picture that current test obtains is 18, at this point it is possible to
It is thick to continue to continue to obtain with object brightness 20 according to the intrinsic brilliance 18 of the 2nd two field picture the equivalent of the destination object, i.e., 18/
20*7.5=6.75, and then the exposure parameter that determination matches with equivalent thickness 6.75 again in body thickness model, i.e., (45,11),
Then the perspective voltage based on 45KV and 11mA fluoroscopy current are had an X-rayed to the destination object, if the 3rd of perspective acquisition the
The brightness of two field picture reaches (or close, the error between intrinsic brilliance and object brightness with object brightness 20 of object brightness 20
Can be depending on actual clinical demand) then stop perspective, if the 3rd two field picture brightness that perspective obtains is still without reaching object brightness
20, then continue to repeat aforesaid operations, until obtaining the image that object brightness is 20 (or close with object brightness 20).By above-mentioned
Method can quickly obtain the image of object brightness, greatly reduce the dose of radiation during perspective.
The perspective exposal control method that the present embodiment provides, on the basis of above-described embodiment, to " based on object brightness and
The equivalent of destination object described in the luminance acquisition of the nth frame image is thick " it is optimized, by obtaining the nth frame figure
The brightness of picture and the ratio of the object brightness, based on the exposure parameter pair in the ratio and body thickness model with nth frame image
The thick equivalent for obtaining the destination object of body answered is thick, and then is searched and the thick exposure matched of the equivalent in body thickness model
Optical parameter, the image of object brightness can quickly be obtained by carrying out perspective with the exposure parameter, shortened the perspective time, greatly subtracted
Dose of radiation during small perspective.
Embodiment three
Fig. 3 be the embodiment of the present invention three provide perspective exposure-control device structural representation, shown in Figure 3, institute
Stating device includes：Acquisition module 310, computing module 320, determining module 330 and perspective module 340.
Wherein, acquisition module 310, for obtaining the brightness of destination object nth frame image, wherein, N is more than or equal to 1；Calculate
Module 320, the equivalent for destination object described in the luminance acquisition based on object brightness and the nth frame image are thick；It is determined that
Module 330, for being determined in body thickness model and the thick exposure parameter matched of the equivalent of the destination object；Have an X-rayed module
340, for being had an X-rayed based on the exposure parameter to the destination object.
Further, perspective module 340 includes exposure control unit, and the exposure control unit is used to be based on the exposure
Parameter stops unwrapping wire after M exposed frames are carried out to the destination object, and wherein M is less than or equal to 5.
Further, computing module 320 includes：
Ratio acquiring unit, for obtaining the brightness of the nth frame image and the ratio of the object brightness；
Equivalent thickness acquiring unit, for being joined based on the exposure in the ratio and body thickness model with the nth frame image
The thick equivalent for obtaining the destination object of body corresponding to number is thick.
Further, described device also includes：
Body thickness model acquisition module, for obtaining the body thickness model, including：
Exposure parameter acquiring unit is right with it when the brightness of image for obtaining different-thickness body mould reaches object brightness
The exposure parameter answered；
Fitting unit, for being fitted to the body mould thickness and corresponding exposure parameter；
Further, the exposure parameter comprises at least：Have an X-rayed voltage, fluoroscopy current, filtration model, field size and source
One kind in image distance.
The perspective exposure-control device that the present embodiment provides, by obtaining the brightness of destination object nth frame image, based on mesh
It is thick to mark the equivalent of the luminance acquisition destination object of brightness and nth frame image, and then is determined and the target in body thickness model
The exposure parameter of the thick matching of the equivalent of object, and the destination object is had an X-rayed based on the exposure parameter, can be fast
The object brightness image for meeting clinical demand is obtained fastly, largely reduces the dose of radiation during perspective.
The perspective exposure-control device that the embodiment of the present invention is provided can perform any embodiment of the present invention provided it is saturating
Depending on exposal control method, possess the corresponding functional module of execution method and beneficial effect corresponding with perspective exposal control method.
On the basis of above-mentioned technical proposal, the embodiment of the invention also discloses a kind of X-ray production apparatus, the X-ray production apparatus bag
Include the perspective exposure-control device described in above-described embodiment.
By setting perspective exposure-control device provided in an embodiment of the present invention in X-ray production apparatus, whole process of having an X-rayed is by C
Shape arm X-ray production apparatus is automatically performed, the adjustment of exposure parameter, the stopping of perspective etc. during perspective, does not need the intervention of doctor,
Automation and the intelligence degree of C-arm x-ray machine are improved to a certain extent.On the other hand, by using of the invention real
The exposal control method that regards of example offer is applied, doctor can have an X-rayed the time continued with self-defined, radioscopy machine system default
It is 0 to have an X-rayed perdurabgility, i.e., system stops having an X-rayed at once after brightness of image reaches object brightness, and shows figure on the display device
Picture.
In the present embodiment, above-mentioned X-ray production apparatus can be operated as follows：
Step 1：User's (being often referred to doctor) by the control flow of the X-ray production apparatus can voluntarily set perspective continue when
Between, the default value of system is to stop unwrapping wire at once after brightness of image reaches object brightness, that is, it is zero to have an X-rayed perdurabgility.
Step 2：User selects the of short duration perspective function of X-ray production apparatus by the control flow of X-ray production apparatus, and steps on backpedalling brake, X
X-ray machine X starts to load X-ray pulse.
Step 3：When the control system of X-ray production apparatus detects that the brightness of image of present frame reaches object brightness, stop automatically
The only loading of X-ray pulse, and fluoroscopy images are shown on a display screen；And even if user still steps on backpedalling brake in the process, X
X-ray machine X also will not continue to unwrapping wire；Namely the stopping of X ray is no longer realized by user by the control to backpedalling brake, but by X
The control system of X-ray machine X automatically controls.
It will be appreciated by those skilled in the art that realize that all or part of step in above-described embodiment method is to pass through
Program instructs the hardware of correlation to complete, and the program storage is in the storage medium, including some instructions are causing one
Individual equipment (can be single-chip microcomputer, chip etc.) or processor (processor) perform each embodiment methods described of the application
All or part of step.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage (ROM, Read-Only
Memory), random access memory (RAM, Random Access Memory), magnetic disc or CD etc. are various can store journey
The medium of sequence code.
Pay attention to, above are only presently preferred embodiments of the present invention and institute's application technology principle.It will be appreciated by those skilled in the art that
The invention is not restricted to specific embodiment described here, can carry out for a person skilled in the art various obvious changes,
Readjust and substitute without departing from protection scope of the present invention.Therefore, although being carried out by above example to the present invention
It is described in further detail, but the present invention is not limited only to above example, without departing from the inventive concept, also
Other more equivalent embodiments can be included, and the scope of the present invention is determined by scope of the appended claims.
Claims (10)
1. one kind perspective exposal control method, it is characterised in that including：
The brightness of destination object nth frame image is obtained, wherein, N is more than or equal to 1；
The equivalent of destination object described in luminance acquisition based on object brightness and the nth frame image is thick；
Determined in body thickness model and the thick exposure parameter matched of the equivalent of the destination object；
The destination object is had an X-rayed based on the exposure parameter.
2. control method according to claim 1, it is characterised in that described to be based on the exposure parameter to the target pair
Include as carrying out perspective：Stop unwrapping wire after carrying out M exposed frames to the destination object based on the exposure parameter, wherein M is less than
Equal to 5.
3. control method according to claim 1, it is characterised in that described to be based on object brightness and the nth frame image
Luminance acquisition described in the equivalent thickness of destination object include：
Obtain the brightness of the nth frame image and the ratio of the object brightness；
Based on the thick acquisition destination object of body corresponding with the exposure parameter of nth frame image in the ratio and body thickness model
Equivalent is thick.
4. control method according to claim 1, it is characterised in that also include：Obtain the body thickness model, the acquisition
The body thickness model includes：
When the brightness of image of acquisition different-thickness body mould reaches object brightness, corresponding exposure parameter；
The body mould thickness and corresponding exposure parameter are fitted.
5. according to the control method described in claim any one of 1-4, it is characterised in that the exposure parameter comprises at least：Thoroughly
Depending on the one kind of voltage, fluoroscopy current, filtration model, field size and source image away from.
6. one kind perspective exposure-control device, it is characterised in that including：
Acquisition module, for obtaining the brightness of destination object nth frame image, wherein, N is more than or equal to 1；
Computing module, the equivalent for destination object described in the luminance acquisition based on object brightness and the nth frame image are thick；
Determining module, for being determined in body thickness model and the thick exposure parameter matched of the equivalent of the destination object；
Module is had an X-rayed, for being had an X-rayed based on the exposure parameter to the destination object.
7. control device according to claim 6, it is characterised in that the perspective module includes：Exposure control unit, institute
State exposure control unit to be used to stop unwrapping wire after carrying out M exposed frames to the destination object based on the exposure parameter, wherein M is small
In equal to 5.
8. control device according to claim 6, it is characterised in that the computing module includes：
Ratio acquiring unit, for obtaining the brightness of the nth frame image and the ratio of the object brightness；
Equivalent thickness acquiring unit, for based on corresponding with the exposure parameter of nth frame image in the ratio and body thickness model
The thick equivalent for obtaining the destination object of body is thick.
9. control device according to claim 6, it is characterised in that also include：
Body thickness model acquisition module, the body thickness model acquisition module include：
Exposure parameter acquiring unit, it is corresponding when the brightness of image for obtaining different-thickness body mould reaches object brightness
Exposure parameter；
Fitting unit, for being fitted to the body mould thickness and corresponding exposure parameter.
10. a kind of X-ray production apparatus, it is characterised in that including the perspective exposure-control device as described in claim any one of 6-9.
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| CN201711218942.7A CN107811646A (en) | 2017-11-28 | 2017-11-28 | Have an X-rayed exposal control method, device and X-ray production apparatus |
| PCT/CN2018/090452 WO2018224039A1 (en) | 2017-06-08 | 2018-06-08 | Systems and methods for medical imaging |
| EP18814186.5A EP3634236A4 (en) | 2017-06-08 | 2018-06-08 | Systems and methods for medical imaging |
| CA3066504A CA3066504A1 (en) | 2017-06-08 | 2018-06-08 | Systems and methods for medical imaging |
| US16/024,111 US10702235B2 (en) | 2017-06-08 | 2018-06-29 | Systems and methods for medical imaging |
| US16/921,889 US11375972B2 (en) | 2017-06-08 | 2020-07-06 | Systems and methods for medical imaging |
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