CN107669284A - X-ray machine puts position method, apparatus and medical examination system - Google Patents
X-ray machine puts position method, apparatus and medical examination system Download PDFInfo
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- A61B6/4476—Constructional features of apparatus for radiation diagnosis related to motor-assisted motion of the source unit
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- A61B6/4021—Arrangements for generating radiation specially adapted for radiation diagnosis involving movement of the focal spot
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- A—HUMAN NECESSITIES
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Abstract
The application provides a kind of X-ray machine pendulum position method, apparatus and medical examination system, wherein, X-ray machine pendulum position method includes：Shooting image is received, the shooting image is gathered by the camera device set in the bulb tube component of X-ray machine, and the shooting image includes the imaging region of X-ray machine；Obtain the position that the display screen for showing shooting image receives and select data, position selection data are used to represent the object region determined in shooting image；Data and default mapping relations are selected to determine the kinematic parameter of bulb tube component corresponding with position selection data according to position；Kinematic parameter is sent to motion-control module, to cause motion-control module to control bulb tube component movement according to kinematic parameter, until object region is located at the center of imaging region.The X-ray machine provided by the embodiment of the present application puts position method, apparatus and medical examination system, it is possible to increase X-ray machine puts the automaticity of position, improves operating efficiency, reduces roentgen radiation x dosage.
Description
Technical field
The application is related to technical field of medical equipment, more particularly to a kind of X-ray machine pendulum position method, apparatus and medical examination system
System.
Background technology
Digital X-ray photography (DR, Digital Radiography) system is computer digital image treatment technology and X
A kind of advanced medical system that ray irradiation technology is combined and formed.Digital radiography because its dose of radiation is small,
The quality of image is high, the accuracy of the recall rate of disease and diagnosis is higher and is widely used.Due to the bat at different human body position
Taking the photograph needs the positioning posture of X-ray machine equipment different, therefore the use of X-ray machine equipment is being, it is necessary to first to X when a corpse or other object for laboratory examination and chemical testing is shot
Line machine puts position.Above-mentioned X-ray machine pendulum position is typically the center that the area-of-interest for treating a corpse or other object for laboratory examination and chemical testing is moved to the roentgen radiation x visual field, so
Shooting inspection is carried out to subject again afterwards.
The content of the invention
The application provides a kind of X-ray machine pendulum position method, apparatus and medical examination system, to improve the automatic of X-ray machine pendulum position
Change degree, operating efficiency is improved, reduce roentgen radiation x dosage.
A kind of X-ray machine pendulum position method is provided according to the first aspect of the embodiment of the present application.Methods described includes：
Shooting image is received, the shooting image is gathered by the camera device set in the bulb tube component of X-ray machine, and described
Shooting image includes the imaging region of the X-ray machine；Obtain the position choosing that the display screen for showing the shooting image receives
Data are selected, the position selection data are used to represent the object region determined in the shooting image；According to institute's rheme
Selection data and default mapping relations are put, it is determined that the motion of the bulb tube component corresponding with position selection data is joined
Number；The kinematic parameter is sent to motion-control module, to cause the motion-control module according to the kinematic parameter control
The bulb tube component movement is made, until the object region is located at the center of the imaging region.
A kind of X-ray machine pendulum position device is provided according to the second aspect of the embodiment of the present application.Described device includes：
Shooting image receiving unit, for receiving shooting image, the shooting image in the bulb tube component of X-ray machine by setting
Camera device collection, and the shooting image includes the imaging region of the X-ray machine；Position selects data capture unit, uses
Data are selected in the position for obtaining the display screen reception for being used for showing the shooting image, the position selection data are used to represent
The object region determined in the shooting image；Kinematic parameter determining unit, for selecting data according to the position
And default mapping relations, it is determined that the kinematic parameter of the bulb tube component corresponding with position selection data；Motion ginseng
Number transmitting element, for the kinematic parameter to be sent to motion-control module, to cause the motion-control module according to institute
State kinematic parameter and control the bulb tube component movement, until the object region is located at the center of the imaging region.
A kind of medical examination system is provided according to the third aspect of the embodiment of the present application, the system includes：X-ray machine, control
Platform and display screen processed；The X-ray machine includes：Bulb tube component and the motion control mould for controlling the bulb tube component motion
Block, camera device is provided with the bulb tube component；The console includes being automatically positioned module, it is described be automatically positioned module with
The motion-control module connection；
Wherein, the camera device, for gathering shooting image, the imaging of the X-ray machine is included in the shooting image
Region；The display screen, for showing the shooting image, and receiving position selection data, the position selection data are used for
Represent the object region determined in the shooting image；It is described to be automatically positioned module, for obtaining the camera device
The position selection data that the shooting image of collection and the display screen receive, and data and default are selected according to the position
Mapping relations, it is determined that the kinematic parameter of the bulb tube component corresponding with position selection data, the kinematic parameter is sent out
Deliver to motion-control module；The motion-control module, for controlling the bulb tube component to move according to the kinematic parameter, directly
It is located at the center of the imaging region to the object region.
The X-ray machine pendulum position method, apparatus and medical examination system of the embodiment of the present application, are received in shooting figure by display screen
As the object region of upper determination, data can be selected in position according to corresponding to the object region, it is determined that with the position
The kinematic parameter of bulb tube component corresponding to data is selected, and bulb tube component is automatically controlled according to the kinematic parameter and is moved to target position
Put, pendulum bit rate is fast, improves operating efficiency.And X-ray line need not be opened during pendulum position, the irradiation of person under inspection can be reduced
Dosage.
It should be appreciated that the general description and following detailed description of the above are only exemplary and explanatory, not
The application can be limited.
Brief description of the drawings
Fig. 1 is a kind of structural representation of medical examination system shown in the exemplary embodiment of the application one；
Fig. 2 is a kind of structural representation of bulb tube component shown in the exemplary embodiment of the application one；
Fig. 3 is a kind of flow chart of X-ray machine pendulum position method shown in the exemplary embodiment of the application one；
Fig. 4 is the flow chart of one embodiment the step of the kinematic parameter of bulb tube component is determined in embodiment illustrated in fig. 3；
Fig. 5 is the flow chart of one embodiment the step of the kinematic parameter of bulb tube component is determined in embodiment illustrated in fig. 4；
Fig. 6 is the flow of another embodiment the step of the kinematic parameter of bulb tube component is determined in embodiment illustrated in fig. 4
Figure；
Fig. 7 is the flow of another embodiment the step of the kinematic parameter of bulb tube component is determined in embodiment illustrated in fig. 4
Figure；
Fig. 8 is a kind of structured flowchart of X-ray machine pendulum position device shown in the exemplary embodiment of the application one；
Fig. 9 is the structured flowchart of another X-ray machine pendulum position device shown in the exemplary embodiment of the application one；
Figure 10 is the structured flowchart of another X-ray machine pendulum position device shown in the exemplary embodiment of the application one；
Figure 11 is the structured flowchart of another X-ray machine pendulum position device shown in the exemplary embodiment of the application one；
Figure 12 is the structured flowchart of another X-ray machine pendulum position device shown in the exemplary embodiment of the application one.
Embodiment
Here exemplary embodiment will be illustrated in detail, its example is illustrated in the accompanying drawings.Following description is related to
During accompanying drawing, unless otherwise indicated, the same numbers in different accompanying drawings represent same or analogous key element.Following exemplary embodiment
Described in embodiment do not represent all embodiments consistent with the application.On the contrary, they be only with it is such as appended
The example of the consistent apparatus and method of some aspects be described in detail in claims, the application.
It is only merely for the purpose of description specific embodiment in term used in this application, and is not intended to be limiting the application.
" one kind " of singulative used in the application and appended claims, " described " and "the" are also intended to including majority
Form, unless context clearly shows that other implications.It is also understood that term "and/or" used herein refers to and wrapped
Containing the associated list items purpose of one or more, any or all may be combined.
In correlation technique, when carrying out X-ray machine pendulum position, generally require by the frame for operating the X-ray machine in technician to inspection chamber,
By electronic or flat panel detector is moved to manually the check point of person to be checked.Then pressed by lower bearing bracket from motion tracking
Button, gantry motion control system calculate the path that bulb needs to move, and are automatically moved to be aligned the position of flat panel detector, complete
Position is put into patient.In order to complete the center centering of bulb and flat panel detector, it is necessary to the motion bit confidence of each axle of X-ray machine
Breath, position feedback is carried out usually using potentiometer and encoder, the spatial positional information of bulb and flat panel detector is calculated, obtains
Go out to need the parameter moved.This automatic centering method needs operation technician to enter inspection chamber, is grasped beside the frame of X-ray machine
Make, the photography of operating room unwrapping wire is returned after the completion of pendulum position.And also need to repeat these when checking another person to be checked
Bit manipulation is put, automaticity is not high, cumbersome, and workload is very big, influences operating efficiency.And when unwrapping wire is photographed, it is
Inside of human body organization chart picture is preferably presented, it is also necessary to while observation x-ray fluoroscopy image, while being pressed by the regulation on console
Button moves bulb tube component, and area-of-interest (body part that person i.e. to be checked needs to check) is moved to after imaging region center
Shot.So add the roentgen radiation x dosage of person to be checked.
Based on this, the embodiment of the present application provides a kind of pendulum position method, apparatus of the X-ray machine after improvement and medical examination system
System, to improve the automaticity of X-ray machine pendulum position, operating efficiency is improved, reduces roentgen radiation x dosage.
Below in conjunction with the accompanying drawings, position method, apparatus is put to the X-ray machine of the embodiment of the present application and medical examination system is carried out in detail
Explanation.In the case where not conflicting, the feature in following embodiment and embodiment can be mutually combined.
As shown in figure 1, Fig. 1 is a kind of structural representation for medical examination system 10 that the embodiment of the present application provides, the doctor
Treating inspection system 10 includes：X-ray machine 11, console 12, display screen 13 and examination couch 14.Wherein, console 12 and display screen
13 can be arranged in control room, and display screen 13 can be arranged on the table top of console 12.X-ray machine 11 and examination couch 14 can be with
It is arranged in inspection chamber.X-ray machine 11 includes bulb tube component 111 and the motion control mould for controlling bulb tube component 111 to move
Block (not shown).
In an optional embodiment, X-ray machine 11 is provided with traverse rod 115 (direction of motion AB) and (the motion side of vertical rail 116
To for CD), motion-control module is used for the fortune for controlling direction of motion AB or vertical rail 116 of the bulb tube component 111 along traverse rod 115
Dynamic direction CD motions.The lower section of examination couch 14 is provided with flat panel detector 15 and the slip consistent with the direction of motion CD of vertical rail 116
Track, flat panel detector 15 can move along the sliding rail.In the present embodiment, flat panel detector 15 can be from motion tracking
Movement locus of the bulb tube component 111 on the direction CD of vertical rail 116, and follow the movement locus to be moved on sliding rail, make
The person to be checked that must be lain on examination couch 14 is in correctly pendulum position.
Console 12 is used to control the bulb tube component 111 on X-ray machine 11 to launch X ray, and X ray penetrates person to be checked, irradiates
Onto the flat panel detector 15 of the lower section of examination couch 14, x-ray photon is converted into data signal by flat panel detector 15, and carries out mould
X-ray image is generated after number conversion.
Camera device 112 is provided with bulb tube component 111, as shown in Figure 2.Camera device 112 is used to gather shooting image,
The imaging region 114 of X-ray machine 11 is included in the shooting image.Display screen 13 is used to show shooting image, and receiving position selects
Data, position selection data are used to represent the object region determined in shooting image.
Console 12 includes being automatically positioned module (not shown), is automatically positioned module and is connected with motion-control module.
The position selection data that module is used for the shooting image and reception of display screen 13 for obtaining the collection of camera device 112 are automatically positioned, and
Data and default mapping relations are selected according to position, it is determined that bulb tube component 111 corresponding with position selection data
Kinematic parameter, kinematic parameter is sent to motion-control module.Motion-control module controls bulb group according to the kinematic parameter
Part 111 moves, until object region is located at the center of the imaging region 114.
In the embodiment of the present application, it can first determine that bulb tube component 111 corresponding to unit pixel size needs in shooting image
The distance to be moved, so as to obtain the mapping relations of pixel distance and the move distance of bulb tube component 111, and it is stored in console 12
Be automatically positioned in module.Wherein, the distance that bulb tube component 111 corresponding to unit pixel size needs to move can be according to experiment
Obtain.For example with reference to figure 2, camera device 112 can be arranged in the beam-defining clipper 1111 of bulb tube component 111.It can so lead to
Cross the position that camera device 112 simulates bulb focus 1112.Preferably, can also be in the beam-defining clipper 1111 of bulb tube component 111
Middle installation reflective mirror 113, reflective mirror 113 are used for the shooting area for reflecting camera device 112.Camera device 112 passes through reflective mirror
113 simulate the imaging region 114 of bulb focus 1112.By the opening for changing the inner shield x-ray apparatus 1113 of beam-defining clipper 1111
Size, it may be controlled to, as the size in region 114, finally make it that shooting area is identical with the imaging region 114 of X-ray machine, that is, takes the photograph
Collect that the X-ray imaging of shooting image and X ray is consistent as device 112, can cause movement locus parameter calculate it is simpler
It is clean.It is 1 meter to set the vertical range between the bulb focus 1112 of X-ray machine 11 and flat panel detector 15, is put on examination couch 14
Put 256mm*192mm object, the size of the opening of regulation shielding x-ray apparatus 1113 so that imaging region 114 just includes
The object, then by the shooting image of camera device 112, the image for being saved as 1024*768 resolution ratio (can be by selecting 1024*
The camera of 768 resolution ratio obtains), it is shown in resolution ratio and is similarly on 1024*768 display screen 13.Then on display screen 13
Realize the actual range that the displacement of 1 unit pixel wants bulb tube component 111 to move 0.25mm, i.e., unit pixel chi in shooting image
The distance that bulb tube component 111 corresponding to very little needs to move is 0.25mm, so as to complete the pixel distance and bulb in shooting image
Mapping between the distance that component 111 moves.Assuming that pixel distance is d, then the mapping relations can be 0.25d (mm).
In the case of other device locations, such as：The shooting area of camera device 112 and the imaging region 114 of X-ray machine are not
Identical, camera device 112 resolution ratio and the resolution ratio of display screen 13 differ or the bulb focus 1112 of X-ray machine 11 is with putting down
When vertical range between partitioned detector 15 is not 1 meter.The list in shooting image can be calculated by base correction data
Bulb tube component 111 corresponding to the Pixel Dimensions of position needs the distance moved.So as to obtain the pixel distance and bulb in shooting image
Mapping relations between the displacement of component 111.
It should be noted that in another optional embodiment, flat panel detector 15 can be arranged on breast photograph shelf column,
By rotating bulb tube component 111 (angle that bulb is such as rotated to+90) so that bulb focus 1112 is perpendicular to flat panel detector
15.The present embodiment again may be by camera device 112 and collect shooting image, and select number according to the position received on display screen 13
According to the kinematic parameter of bulb tube component corresponding to determination 111, and controlled according to the kinematic parameter and bulb tube component 111 is moved to target
Position.
In the embodiment of the present application, camera device 112 can be utilized to simulate the imaging region 114 of bulb focus 1112,
When X-ray machine 11 puts position, by being clicked on display screen 13 or touching the object region on image, console 12 can be with
The click or the corresponding position coordinates in shooting image of touch location are obtained, and by default mapping relations, is calculated
Bulb tube component 111 needs the distance of movement, in order to control bulb tube component 111 to move to the target location.
Potentiometer and encoder need not be used to be fed back during position is put, can be saved on hardware unit
This.Operating room is frequently entered also without operation technician and carries out pendulum bit manipulation, and automaticity is higher, and pendulum bit rate is fast, improves
Operating efficiency.And X-ray line need not be opened during pendulum position, the exposure dose of person under inspection can be reduced.
One embodiment of position method is put to the X-ray machine of the application with reference to the medical examination system shown in Fig. 1 and Fig. 2
It is described in detail.
Referring to Fig. 3, Fig. 3 is that a kind of X-ray machine of the exemplary embodiment of the application one offer puts the flow chart of position method, the party
Method is applied to be automatically positioned module in medical examination system, and this method may comprise steps of：
In step 31, shooting image is received, the shooting image is adopted by the camera device set in the bulb tube component of X-ray machine
Collection, and the shooting image includes the imaging region of X-ray machine.
In the embodiment of the present application, the shooting image of camera device collection, can be clapped by the camera device 112 in Fig. 2
Image in the reflective mirror 113 taken the photograph.And the imaging region of X-ray machine can be the X-ray process screen that bulb focus 1112 is sent in Fig. 2
Cover the imaging region 114 formed after the opening of device 1113.
In an optional embodiment, the image that camera device 112 is shot by reflective mirror 113 can be more than x-ray
The imaging region of machine.In another optional embodiment, shooting image that camera device 112 collects can with X-ray machine into
As identical.
When the shooting image of camera device collection is identical with the imaging region of X-ray machine, can be pressed by camera device 112
The imaging region 114 of bulb focus 1112 is drawn up according to former proportional die, and then causes the ginseng of the movement locus of follow-up middle bulb tube component
Number calculates more succinct.
In this step, it is automatically positioned after the above-mentioned shooting image of module reception, the shooting image can be sent to aobvious
Display screen is shown.Certainly, in other examples, shooting image can also be sent by other transmission paths to display screen display
Show.
In the step 32, obtain the position that the display screen for showing shooting image receives and select data, position selection
Data are used to represent the object region determined in the shooting image.
In the embodiment of the present application, technician is operated in the image on observing display screen, can select bulb group to be caused
The picture position of part alignment.Be automatically positioned module can based on operation technician on a display screen selection operation (as touch or
Click on) selection data in position corresponding to reception.For example, the image of camera device shooting is the upper part of the body of person to be checked, person to be checked needs
The position to be checked is cervical vertebra, then operation technician can select the cervical vertebra on image on display image.The neck
Vertebra position is then properly termed as object region, i.e. object region can be the image position to be aligned for operating technician's selection
Put region.
In step 33, data and default mapping relations are selected according to position, it is determined that selecting data pair with the position
The kinematic parameter for the bulb tube component answered.
Still by taking the example that above-mentioned cervical vertebra selects as an example, position selection data can be intended to indicate that operation technician's choosing
The data for the object region selected.In an optional embodiment, position selection data can be that display screen receives
The displaing coordinate of object region.Such as when operation technician clicks on the cervical vertebra in the shooting image for showing screen display
When, display screen can be received based on the clicking operation for operating technician and caused click coordinate data, i.e. display screen upper cervical spine
The displaing coordinate at position.In another example, position selection data can be the object region that display screen receives
Gray value.Such as：The shooting image shown in display screen can be gray level image.Screen display is shown when operation technician clicks on
Shooting image on cervical vertebra when, display screen can receive the gray value of the cervical vertebra, then be automatically positioned module
According to default gray value and the mapping relations of the signature grey scale value of shooting image, corresponding cervical vertebra in shooting image is obtained
Signature grey scale value.Then the target image pixel according to corresponding to determining the signature grey scale value of cervical vertebra.And according to shooting
Pixel distance between the picture centre pixel and target image pixel of image, and default pixel distance and bulb move away from
From mapping relations, determine the kinematic parameter of bulb tube component.
In the present embodiment, this step 33 can include sub-step 331 and sub-step 332, with reference to figure 4.
In sub-step 331, closed according to the mapping between the displaing coordinate and the image pixel of shooting image pre-established
System, determine in shooting image to should displaing coordinate target image pixel.
, can be according to the resolution ratio of display screen and resolution ratio (the i.e. shooting dress of shooting image in an optional embodiment
The resolution ratio put) establish mapping relations.Such as when the resolution ratio of display screen and the identical resolution ratio of shooting image, the mapping
Relation is one to one, i.e., the displaing coordinate of the object region on display screen is equal to the target image pixel in shooting image
Coordinate.When the resolution ratio of display screen and the resolution ratio of shooting image differ, can be built according to the ratio of both resolution ratio
Mapping relations between vertical displaing coordinate and the image pixel of shooting image.
In sub-step 332, according to the pixel distance between the picture centre pixel and target image pixel of shooting image,
And the mapping relations of default pixel distance and bulb move distance, determine the kinematic parameter of bulb tube component.
In the present embodiment, the corresponding unit pixel size of a pixel, pixel distance are the number of pixel, because
This understands that pixel distance may also indicate that the number of unit pixel size.
In an optional embodiment, this step includes sub-step 3321, sub-step 3322 and sub-step 3323, reference chart
5。
In sub-step 3321, the pixel distance between picture centre pixel and target image pixel and position side are determined
To.
In the present embodiment, both can be determined according to the coordinate of the coordinate of picture centre pixel and target image pixel it
Between pixel distance and locality.Specifically, the target image pixel coordinate can be the center pixel of object region
The coordinate of point, or the average value of the coordinate of all pixels point in object region.Such as, it is assumed that picture centre pixel
The coordinate of point is (X0, Y0)=(35,48), the coordinate of target image pixel is (X1, Y1)=(59,80).The then picture between 2 points
Plain distance is：(individual pixel), direction is：From positive 53 degree of the axle offsets of the just axial Y of X.
In sub-step 3322, according to the mapping relations of the pixel distance and default pixel distance and bulb move distance
Determine that bulb tube component needs mobile distance.
In the present embodiment, the pixel distance between picture centre pixel and target image pixel and bulb tube component need to move
The proportional relation of dynamic distance, in an optional embodiment, can first it determine in shooting image corresponding to unit pixel size
Bulb tube component needs the distance moved, so as to obtain the mapping relations of pixel distance and bulb tube component move distance.
For example it is 1 meter to set the vertical range between the bulb focus of X-ray machine and flat panel detector, is put on examination couch
Put 256mm*192mm object, the size of the opening of regulation shielding x-ray apparatus so that imaging region just includes the object,
Then by camera device shooting image, the image for being saved as 1024*768 resolution ratio (can be by selecting 1024*768 resolution ratio
Camera obtain), be shown in resolution ratio and be similarly on 1024*768 display screen.Then 1 unit pixel is realized on display screen
Displacement want bulb tube component movement 0.25mm actual range.Bulb tube component corresponding to unit pixel size i.e. in shooting image
The distance for needing to move is 0.25mm.Assuming that pixel distance is d, then mapping relations of pixel distance and bulb tube component move distance
For 0.25d (mm).Then when the pixel distance between picture centre pixel and target image pixel is 40 pixel, bulb motion away from
From for 0.25*40=10mm.
However, when the shooting area of camera device and the imaging region of X-ray machine differ, the resolution ratio of camera device with it is aobvious
When the resolution ratio of display screen differs or the vertical range between the bulb focus and flat panel detector of X-ray machine is not 1 meter.Can be with
Bulb tube component corresponding to the unit pixel size being calculated by base correction data in shooting image needs the distance moved.
So as to obtain the mapping relations of the pixel distance in shooting image and bulb tube component move distance.
In sub-step 3323, determine that bulb tube component needs mobile direction according to the locality.When the locality
For from during 53 degree of positive axle offsets of the just axial Y of X, the direction of motion that can set bulb tube component is consistent with the locality.Such as：
Coordinate system is established on horizontal plane where bulb tube component, the X-axis and Y direction and the coordinate of the foundation in display screen of the coordinate system
The X-axis of system is consistent with Y direction, then the direction of bulb tube component movement is from positive 53 degree of the axle offsets of the just axial Y of X.
The present embodiment can control bulb tube component directly to press by determining that bulb tube component is needing mobile distance and direction
Target location is moved to according to the distance and direction, it is simple and convenient.
In another optional embodiment, sub-step 332 includes sub-step 3324, sub-step 3325 and sub-step 3326,
With reference to figure 6.
In sub-step 3324, the abscissa difference between picture centre pixel and target image pixel is determined respectively, is indulged
Coordinate difference.
In the present embodiment, it may be determined that the horizontal seat between the coordinate of picture centre pixel and the coordinate of target image pixel
Mark difference, ordinate difference.Specifically, the target image pixel coordinate can be the seat of the central pixel point of object region
Mark, or the average value of the coordinate of all pixels point in object region.Such as, it is assumed that the seat of picture centre pixel
It is designated as (X0, Y0)=(35,48), the coordinate of target image pixel is (X1, Y1)=(59,80), then abscissa difference is 24 pictures
Element, ordinate difference are 32 pixels.
In sub-step 3325, according to the mapping between abscissa difference and default pixel distance and bulb move distance
Relation, determine that bulb tube component needs mobile distance and direction on traverse rod.
In the present embodiment, it may be determined that in shooting image corresponding to unit pixel size bulb tube component need move away from
From so as to obtain the mapping relations of pixel distance and bulb tube component move distance.In the present embodiment, unit pixel in shooting image
The computational methods for the distance that bulb tube component corresponding to size needs to move may be referred in embodiment illustrated in fig. 5 in sub-step 3322
The method of offer, will not be repeated here.Assuming that the displacement for realizing 1 unit pixel on display screen wants bulb tube component to move
0.25mm actual range, it is assumed that pixel distance d, then the mapping relations of pixel distance and bulb tube component move distance be
0.25d(mm).When abscissa difference is 24 pixel, it is 24*0.25=6 (mm) that mobile distance is needed on traverse rod, on traverse rod
Mobile direction is needed for forward direction.The pros of the forward direction and the X-axis of the coordinate system of the foundation in display screen of traverse rod in the present embodiment
To consistent.
In sub-step 3326, according to the mapping between ordinate difference and default pixel distance and bulb move distance
Relation, determine that bulb tube component needs mobile distance and direction on vertical rail.
In the present embodiment, it equally can first determine that bulb tube component corresponding to unit pixel size needs to transport in shooting image
Dynamic distance, so as to obtain the mapping relations of pixel distance and bulb tube component move distance.It is single in shooting image in the present embodiment
The computational methods for the distance that bulb tube component corresponding to the Pixel Dimensions of position needs to move equally may be referred to embodiment illustrated in fig. 5 neutron
The method provided in step 3322, will not be repeated here.Assuming that the displacement for realizing 1 unit pixel on display screen wants bulb group
Part moves 0.25mm actual range, it is assumed that pixel distance d, then pixel distance and bulb tube component move distance mapping relations
For 0.25d (mm).When ordinate difference is 32 pixel, it is 32*0.25=8 (mm) that mobile distance is needed on vertical rail, indulges rail
It is upper to need mobile direction for forward direction.The Y-axis of the coordinate system of the positive foundation with display screen of rail is indulged in the present embodiment just
Direction is consistent,
The present embodiment can be controlled by determining that bulb tube component needs mobile distance and direction on traverse rod or on vertical rail
Bulb tube component processed is moved along traverse rod and vertical rail, so that bulb tube component moves to target location, motion mode is more clever
It is living.
In another optional embodiment, this step sub-step 332 includes sub-step 3327 and sub-step 3328, reference chart
7。
In sub-step 3327, the vertical range between the bulb focus of X-ray machine and flat panel detector is determined.
In sub-step 3328, according to the pixel between the picture centre pixel and target image pixel of shooting image away from
From the mapping relations and the vertical range of, default pixel distance and bulb tube component move distance, the fortune of bulb tube component is determined
Dynamic parameter.
In the present embodiment, it is assumed that it is h to set the vertical range between the bulb focus of X-ray machine and flat panel detector
Rice, 256mm*192mm object, the size of the opening of regulation shielding x-ray apparatus so that imaging region are placed on examination couch
The object is just included, then by camera device shooting image, being saved as the image of 1024*768 resolution ratio (can pass through selection
The camera of 1024*768 resolution ratio obtains), it is shown in resolution ratio and is similarly on 1024*768 display screen 13.Then on display screen
The displacement for realizing 1 unit pixel want bulb tube component move 0.25*h (mm) actual range.Assuming that picture centre pixel with
Pixel distance between target image pixel is d, then the mapping relations of pixel distance and bulb tube component move distance are 0.25hd
(mm).It according to the default mapping relations, pixel distance d and vertical range h, can then determine the motion ginseng of bulb tube component
Number.
, can be according to bulb focus and flat board when bulb tube component is there occurs during the motion in vertical direction in the present embodiment
Pixel distance between the picture centre pixel and target image pixel of vertical range, shooting image between detector and pre-
If pixel distance and bulb move distance mapping relations, calculate the kinematic parameter of bulb tube component.The application reality is expanded
Apply the application scenarios of example.
With continued reference to Fig. 3, in step 34, kinematic parameter is sent to motion-control module, to cause the motion control
Module controls bulb tube component movement according to kinematic parameter, until object region is located at the center of imaging region.
In the embodiment of the present application, when clicking on or touching the object region on image on a display screen, console can
To obtain the click or the corresponding position coordinates in shooting image of touch location, and by default mapping relations, calculate
Going out bulb tube component needs mobile distance, in order to which bulb tube component moves to the target location.For example person to be checked needs what is checked
Body part is cervical vertebra, then cervical vertebra (i.e. object region) can be chosen on a display screen by operating technician.Then ball
Tube assembly is moved automatically, to cause cervical vertebra to be located at the center of imaging region.In addition, person to be checked needs the body checked
Position or by repeatedly selecting, just so that bulb tube component move to target location.Such as the body that person's needs to be checked check
Body region is cervical vertebra, but for the lower part of the body of person to be checked, (i.e. shooting image does not include neck to the shooting image of camera collection
Vertebra position), then operating technician first can arbitrarily specify one close to the picture position of cervical vertebra so that bulb tube component is first moved
To cause the picture position to be located at the center of imaging region.In the method, movement progressively, until cervical vertebra is positioned at imaging
The center in region.In this case, the picture position that operation technician specifies each time is referred to as object region.
During putting position, operation technician need not come into inspection chamber and be operated manually, and automaticity is higher, and pendulum bit rate is fast, carries
High workload efficiency.And X-ray line need not be opened during pendulum position, the exposure dose of person under inspection can be reduced.
Corresponding with the embodiment of foregoing X-ray machine pendulum position method, present invention also provides the implementation of X-ray machine pendulum position device
Example.
The embodiment of the application X-ray machine pendulum position device can be applied in X-ray machine pendulum position method.Device embodiment can lead to
Software realization is crossed, can also be realized by way of hardware or software and hardware combining.
Fig. 8 is refer to, Fig. 8 is a kind of structural frames for X-ray machine pendulum position device 80 that the exemplary embodiment of the application one provides
Figure, the device 80 are located in the console of medical examination system, and module is automatically positioned applied to console.
The device 80 includes：Shooting image receiving unit 81, position selection data capture unit 82, kinematic parameter determine single
Member 83 and kinematic parameter transmitting element 84.
Wherein, shooting image receiving unit 81 receives shooting image, and the shooting image in the bulb tube component of X-ray machine by setting
Camera device collection, and the shooting image includes the imaging region of X-ray machine.
Position selection data capture unit 82 obtains the position that the display screen for showing shooting image receives and selects data,
Position selection data are used to represent the object region determined in shooting image.
Kinematic parameter determining unit 83 selects data and default mapping relations according to the position, it is determined that being selected with the position
Select the kinematic parameter of bulb tube component corresponding to data.
Kinematic parameter transmitting element 84 sends kinematic parameter to motion-control module, with cause motion-control module according to
Kinematic parameter control bulb tube component movement, until object region is located at the center of imaging region.
In the present embodiment, when clicking on or touching the object region on image on a display screen, position selects data
Acquiring unit 82 can obtain the click or the corresponding position coordinates in shooting image of touch location, kinematic parameter determine single
Member 83 is by default mapping relations, and calculating bulb tube component needs mobile distance, in order to which bulb tube component moves to the mesh
Cursor position.During position is put, operation technician need not come into inspection chamber and be operated manually, and automaticity is higher, put position
Speed is fast, improves operating efficiency.And X-ray line need not be opened during pendulum position, the exposure dose of person under inspection can be reduced.
Fig. 9 is the structured flowchart for another X-ray machine pendulum position device 80 that the exemplary embodiment of the application one provides.In this reality
Apply in example, device 80 also includes shooting image transmitting element 85.
Shooting image transmitting element 85 is after shooting image receiving unit 81 receives shooting image, by the shooting image
Send to display screen and shown.
Figure 10 is the structured flowchart for another X-ray machine pendulum position device 80 that the exemplary embodiment of the application one provides.At this
In embodiment, the position that position selection data capture unit 82 obtains selects data, the object-image region received for display screen
The displaing coordinate in domain.Kinematic parameter determining unit 83 includes：Target image pixel determination subelement 831 and kinematic parameter determine son
Unit 832.
Wherein, target image pixel determination subelement 831 is according to the displaing coordinate pre-established and the image of shooting image
Mapping relations between pixel, determine to correspond to the target image pixel of displaing coordinate in shooting image.Kinematic parameter determines that son is single
Member 832 according to the pixel distance between the picture centre pixel and target image pixel of shooting image, and default pixel away from
From the mapping relations with bulb move distance, the kinematic parameter of bulb tube component is determined.
Figure 11 is the structured flowchart for another X-ray machine pendulum position device 80 that the exemplary embodiment of the application one provides.At this
In embodiment, kinematic parameter determination subelement 832 includes：Positional information determination subelement 8321, displacement determination subelement
8322 and moving direction determination subelement 8323.
Wherein, positional information determination subelement 8321 determine pixel between picture centre pixel and target image pixel away from
From and locality.Displacement determination subelement 8322 is transported according to the pixel distance and default pixel distance with bulb tube component
The mapping relations of dynamic distance, determine that bulb tube component needs mobile distance.Moving direction determination subelement 8323 is according to the position
Direction determines that bulb tube component needs mobile direction.
Figure 12 is the structured flowchart for another X-ray machine pendulum position device 80 that the exemplary embodiment of the application one provides.At this
In embodiment, kinematic parameter determination subelement 832 includes：Coordinate difference determination subelement 8324, traverse rod moving parameter determine son
Unit 8325 and vertical rail moving parameter determination subelement 8326.
Wherein, coordinate difference determination subelement 8324 determines the horizontal stroke between picture centre pixel and target image pixel respectively
Coordinate difference, ordinate difference.Traverse rod moving parameter determination subelement 8325 is according to abscissa difference and default pixel distance
With the mapping relations between bulb move distance, determine that bulb tube component needs mobile distance and direction on traverse rod.Vertical rail moves
Dynamic parameter determination subelement 8326 is closed according to the mapping between ordinate difference and default pixel distance and bulb move distance
System, determine that bulb tube component needs mobile distance and direction on vertical rail.
In another optional embodiment, the bulb focus that kinematic parameter determination subelement 832 is used to determine X-ray machine is with putting down
Vertical range between partitioned detector；And according to the pixel between the picture centre pixel and target image pixel of shooting image
The mapping relations and the vertical range of distance, default pixel distance and bulb tube component move distance, determine bulb tube component
Kinematic parameter.
The function of unit and the implementation process of effect specifically refer to and step are corresponded in the above method in said apparatus
Implementation process, it will not be repeated here.
For device embodiment, because it corresponds essentially to embodiment of the method, so related part is real referring to method
Apply the part explanation of example.Device embodiment described above is only schematical, wherein described be used as separating component
The unit of explanation can be or may not be physically separate, can be as the part that unit is shown or can also
It is not physical location, you can with positioned at a place, or can also be distributed on multiple NEs.Can be according to reality
Need to select some or all of module therein to realize the purpose of application scheme.Those of ordinary skill in the art are not paying
In the case of going out creative work, you can to understand and implement.
The preferred embodiment of the application is the foregoing is only, not limiting the application, all essences in the application
God any modification, equivalent substitution and improvements done etc., should be included within the scope of the application protection with principle.
Claims (10)
1. a kind of X-ray machine puts position method, it is characterised in that methods described includes：
Shooting image is received, the shooting image is gathered by the camera device set in the bulb tube component of X-ray machine, and the shooting
Image includes the imaging region of the X-ray machine；
Obtain the position that the display screen for showing the shooting image receives and select data, the position selection data are used for table
Show the object region determined in the shooting image；
Data and default mapping relations are selected according to the position, it is determined that the ball corresponding with position selection data
The kinematic parameter of tube assembly；
The kinematic parameter is sent to motion-control module, to cause the motion-control module according to the kinematic parameter control
The bulb tube component movement is made, until the object region is located at the center of the imaging region.
2. according to the method for claim 1, it is characterised in that the position selects data, is received for the display screen
The object region displaing coordinate；
It is described that data and default mapping relations are selected according to position, it is determined that bulb group corresponding with position selection data
The kinematic parameter of part, including：
According to the mapping relations between the displaing coordinate and the image pixel of the shooting image pre-established, it is determined that described
The target image pixel of the displaing coordinate is corresponded in shooting image；
According to the pixel distance between the picture centre pixel of the shooting image and the target image pixel, and it is default
The mapping relations of pixel distance and bulb move distance, determine the kinematic parameter of the bulb tube component.
3. according to the method for claim 2, it is characterised in that the picture centre pixel according to the shooting image with
Pixel distance between the target image pixel, and the mapping relations of default pixel distance and bulb move distance, really
The kinematic parameter of the fixed bulb tube component, including：
Determine the pixel distance and locality between described image center pixel and the target image pixel；
The bulb is determined according to the mapping relations of the pixel distance and default pixel distance and bulb tube component move distance
Component needs mobile distance；And
Determine that the bulb tube component needs mobile direction according to the locality.
4. according to the method for claim 2, it is characterised in that the picture centre pixel according to the shooting image with
Pixel distance between the target image pixel, and the mapping relations of default pixel distance and bulb move distance, really
The kinematic parameter of the fixed bulb tube component, including：
Abscissa difference, the ordinate difference between described image center pixel and the target image pixel are determined respectively；
According to the mapping relations between the abscissa difference and default pixel distance and bulb move distance, the ball is determined
Tube assembly needs mobile distance and direction on traverse rod；And
According to the mapping relations between the ordinate difference and default pixel distance and bulb move distance, the ball is determined
Tube assembly needs mobile distance and direction on vertical rail.
5. according to the method for claim 2, it is characterised in that the picture centre pixel according to the shooting image with
Pixel distance between the target image pixel, and the mapping relations of default pixel distance and bulb move distance, really
The kinematic parameter of the fixed bulb tube component, including：
Determine the vertical range between the bulb focus of X-ray machine and flat panel detector；
According to the pixel distance between the picture centre pixel of the shooting image and the target image pixel, default pixel
Mapping relations and the vertical range of the distance with bulb tube component move distance, determine the kinematic parameter of the bulb tube component.
6. a kind of X-ray machine puts position device, it is characterised in that described device includes：
Shooting image receiving unit, for receiving shooting image, the shooting image is taken the photograph by what is set in the bulb tube component of X-ray machine
As device collection, and the shooting image includes the imaging region of the X-ray machine；
Position selects data capture unit, and number is selected for obtaining the position that the display screen for being used for showing the shooting image receives
According to the position selection data are used to represent the object region determined in the shooting image；
Kinematic parameter determining unit, for selecting data and default mapping relations according to the position, it is determined that with institute's rheme
Put the kinematic parameter of the bulb tube component corresponding to selection data；
Kinematic parameter transmitting element, for the kinematic parameter to be sent to motion-control module, to cause the motion control
Module controls the bulb tube component to move according to the kinematic parameter, until the object region is located at the imaging region
Center.
7. device according to claim 6, it is characterised in that institute's rheme that the position selection data capture unit obtains
Selection data are put, the displaing coordinate of the object region received for the display screen；
The kinematic parameter determining unit includes：
Target image pixel determination subelement, for according to the displaing coordinate pre-established and the image of the shooting image
Mapping relations between pixel, determine to correspond to the target image pixel of the displaing coordinate in the shooting image；
Kinematic parameter determination subelement, for the picture centre pixel according to the shooting image and the target image pixel it
Between pixel distance, and mapping relations of default pixel distance and bulb move distance, determine the fortune of the bulb tube component
Dynamic parameter.
8. a kind of medical examination system, it is characterised in that the system includes：X-ray machine, console and display screen；The X-ray machine
Including：Bulb tube component and the motion-control module for controlling bulb tube component motion, it is provided with the bulb tube component
Camera device；The console includes being automatically positioned module, and the module that is automatically positioned is connected with the motion-control module；
Wherein, the camera device, for gathering shooting image, the imaging region of the X-ray machine is included in the shooting image；
The display screen, for showing the shooting image, and receiving position selection data, the position selection data are used for table
Show the object region determined in the shooting image；
Position described to be automatically positioned module, that shooting image and the display screen for obtaining the camera device collection receive
Data are selected, and data and default mapping relations are selected according to the position, it is determined that corresponding with position selection data
The bulb tube component kinematic parameter, the kinematic parameter is sent to motion-control module；
The motion-control module, for controlling the bulb tube component to move according to the kinematic parameter, until the target figure
As region is located at the center of the imaging region.
9. system according to claim 8, it is characterised in that the camera device is arranged on the limit beam of the bulb tube component
In device.
10. system according to claim 9, it is characterised in that be also equipped with the beam-defining clipper of the bulb tube component reflective
Mirror, the reflective mirror are used to reflect the shooting area of the camera device, with cause the shooting area and the X-ray machine into
As region is identical.
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Address after: 110167 No. 177-1 Innovation Road, Hunnan District, Shenyang City, Liaoning Province Applicant after: DongSoft Medical System Co., Ltd. Address before: 110167 No. 177-1 Innovation Road, Hunnan District, Shenyang City, Liaoning Province Applicant before: Dongruan Medical Systems Co., Ltd., Shenyang |
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