CN107913079A - The Beam's eye view device and verification method of Medical Devices - Google Patents
The Beam's eye view device and verification method of Medical Devices Download PDFInfo
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Abstract
The present invention relates to the calibrating installation technical field of Medical Devices, more particularly to a kind of Beam's eye view device of Medical Devices, including：Center calibration element and at least two boundary demarcation parts；Spot detection block is provided with the calibration element of center, Spot detection block is used for the center for marking light field；At least two boundary demarcation parts can relatively move between each other, and border detection block is both provided with each boundary demarcation part, and border detection block is used for the border for marking light field；Spot detection block and border detection block are made by radiation shielding material.The Beam's eye view device of the Medical Devices, the center and border of light field can clearly be shown in the image of launched field, so as to directly verify the deviation of light field and launched field.In this way, verifying the deviation of light field and launched field without film, but test result can be relatively quickly provided, response is good, and test result is more directly perceived, accurate, while reduces the cost of Beam's eye view.
Description
Technical field
The present invention relates to the calibrating installation technical field of Medical Devices, more particularly to a kind of Beam's eye view of Medical Devices
Device and verification method.
Background technology
Radiodiagnosis therapeutic equipment is the Medical Devices being widely used at present.Such as conventional ray irradiation treatment needs
The irradiation field that X-ray is produced at a certain distance from x-ray source is left, to be carried out to the tumour of patient's body a certain size and shape
Radiotherapy.Irradiation field is also known as launched field, refers to that beam is waiting the projection of central plane, says it is beam centre region exactly
50% region defined of dose intensity.The profile of irradiation field represents the scope of radiation, if the scope of radiation and expectation
The scope of irradiation is inconsistent, and the part that can make target area has is missed irradiation, and the serious is can also be irradiated to neighbouring vital organs.
Thus, in order to accurately control launched field, the instruction of launched field is extremely important in Medical Devices.The instruction of wherein launched field is main
Numeral instruction and light field including launched field indicate two parts.If the size of launched field is incorrect or the malposition of launched field,
Huge injury can be brought to patient.In order to avoid such case, it is necessary to which the numeral instruction and light field instruction of launched field are all very accurate
Really.Traditional verification launched field numeral instruction and the method for light field instruction are mainly the method using film photographic-analysis.This method
Operating process include, film is placed on the position specified of test, to film transmitted ray, the side of light field is marked on film
Boundary and the position at the center of light field.X-ray is projected to film by accelerator, the energy of X-ray deposits on film.Film is put
Put 24 it is small when after, scan film with Film scanner, with specific software analysis film image, draw launched field numeral instruction and
The deviation of light field instruction.
But the above-mentioned method using film photographic, testing process are extremely complex.First, need to build one during test
More complicated frock is used to test.And, cannot analysis result when small (need to wait for 24) immediately after the completion of film test.Together
When, when film scanning, needs many points for attention, such as the direction that film is placed, and the setting of scanner parameter, process is cumbersome,
Easily error.In addition, existing film analysis software, cannot automatically provide the deviation of numeral instruction and light field instruction, and grasp
Make complexity, highly dependent upon the experience of analysis personnel.
The content of the invention
Based on this, it is necessary to the method for using film photographic for traditional launched field instruction, flow is complicated, inconvenient,
And the problems such as cannot immediately analyzing and intuitively providing result, there is provided it is a kind of it is easy to operate, can directly and intuitively provide result
The Beam's eye view device of Medical Devices, while additionally provide a kind of Beam's eye view method of Medical Devices.
Above-mentioned purpose is achieved through the following technical solutions：
A kind of Beam's eye view device of Medical Devices, including：Center calibration element and at least two boundary demarcation parts；Mark at center
Determine to be provided with Spot detection block on part, Spot detection block is used for the center for marking light field；At least two boundary demarcation parts mutually it
Between can relatively move, be both provided with border detection block on each boundary demarcation part, border detection block is used for the side for marking light field
Boundary；Spot detection block and border detection block are made by radiation shielding material.
In one of the embodiments, center calibration element is the body of rod, extension side of the center calibration element along upper center calibration element
To the first mounting groove is offered, Spot detection block is slidably mounted in the first mounting groove.
In one of the embodiments, boundary demarcation part is the body of rod, along the extension side of boundary demarcation part on boundary demarcation part
To being arranged at intervals with multiple second mounting grooves；Border detection block to be multiple, multiple border detection blocks respectively it is corresponding be installed on it is multiple
In second mounting groove.
In one of the embodiments, boundary demarcation part is four, and four boundary demarcation parts surround rectangle；Spot detection block
Moved in the rectangular extent.
In one of the embodiments, the Beam's eye view device of Medical Devices further includes mounting bracket, center calibration element and
Boundary demarcation part is movably disposed in mounting bracket.
A kind of Beam's eye view device of Medical Devices, including center calibration element and at least two boundary demarcation parts；Mark at center
The core for determining part is made of radiation shielding material, and center calibration element moves, for marking the center of light field；Boundary demarcation
At least part of part is made of radiation shielding material, and at least two boundary demarcation parts can relatively move, for marking the side of light field
Boundary.
A kind of Beam's eye view device of Medical Devices, including center calibration element and boundary demarcation part；Center calibration element includes
Two intersecting wire parts, two intersecting wire parts can be moved independently, and intersection point is used for the center for demarcating light field；Mark on border
Determine part at least two, at least two boundary demarcation parts move, for marking the border of light field；Two intersecting wire parts by
Radiation shielding material is made, and at least part of boundary demarcation part is made of radiation shielding material.
A kind of Beam's eye view device of Medical Devices, including center calibration element and at least two boundary demarcation parts；Mark at center
Determine part to move, for marking the center of light field, boundary demarcation part moves, for marking the border of light field；Center calibration element
At least part and at least part of boundary demarcation part can be imaged on the flat panel detector of Medical Devices.
A kind of Beam's eye view method of Medical Devices, uses the Beam's eye view device of above-mentioned Medical Devices；The method
Comprise the following steps：
To detector throw light, to form light field；Detector is suitable for receiving ray；Mobility Center calibration element, so that in
Heart detection block is overlapped with light field center；Moving boundary calibration element, so that border detection block and light field overlapping margins；
To detector projection radiation, to form launched field, and detector receives ray；The image of detector collection is analyzed, with
Determine light field and the deviation of launched field.
In one of the embodiments, to detector throw light to form light field the step of before, further include following
Step：
The position of detector is adjusted, detector is located at the grade median plane of Medical Devices.
In one of the embodiments, the image of detector collection is analyzed, the step of to determine the deviation of light field and launched field,
Specifically include：
The imager coordinate of analysis center's detection block and the centre coordinate of launched field, obtain the inclined of light field center and launched field center
Difference；Certain point of the image of border detection block is analyzed to the vertical range on launched field border, obtain light field border at the position with
The deviation on launched field border；The light field border of multiple points and the deviation on launched field border of the image of border detection block are analyzed, to obtain
The maximum of deviation.
In one of the embodiments, to detector projection radiation, the step of to form launched field after, further include following
Step：
Compare the scope of launched field and predetermined coverage field, obtain the deviation of the numeral instruction of launched field.
The Beam's eye view device of above-mentioned Medical Devices, light field is marked by Spot detection block and border detection block respectively
Center and border, and Spot detection block and border detection block are made by radiation shielding material.Therefore project and radiate to the device
During line so that the center and border of light field can clearly be shown in the image for the launched field that detector gathers, so as to direct
Verify light field and the deviation of launched field.In this way, the deviation of light field and launched field is verified without film, but can be relatively rapid
Ground provides test result, and response is good, and test result is more directly perceived, accurate, while reduces the cost of Beam's eye view.
The Beam's eye view method of above-mentioned Medical Devices, is directly installed on detection by the Beam's eye view device of above-mentioned Medical Devices
On device, and the center and border of light field, Spot detection block and border are marked using Spot detection block and border detection block respectively
Detection block is made by radiation shielding material, therefore in the image of detector collection, when can not only record the scope of launched field,
Be able to record the scope of light field at the same time, so as to directly on the image of detector collection analysis obtain the inclined of light field and launched field
Difference, verification mode is more convenient quick, and test result is more directly perceived, accurate.
Brief description of the drawings
Fig. 1 is the structure diagram of the Beam's eye view device for the Medical Devices that one embodiment of the invention provides；
Fig. 2 is the application principle figure of the Beam's eye view device for the Medical Devices that one embodiment of the invention provides；
Fig. 3 is the flow chart of the Beam's eye view method for the Medical Devices that one embodiment of the invention provides.
Wherein：
The Beam's eye view device of 001- Medical Devices；
100- centers calibration element；
110- Spot detection blocks；
200- boundary demarcation parts；
210- border detection blocks；
300- mounting brackets；
400- rotary frames；
410- detectors；
420- treatment heads.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, by the following examples, and combine attached
Figure, is further elaborated the Beam's eye view device and verification method of the Medical Devices of the present invention.It should be appreciated that herein
Described specific embodiment only to explain the present invention, is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " another element, it can be directly on another element
Or there may also be element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or it may be simultaneously present centering elements.On the contrary, when element be referred to as " directly existing " another element " on " when,
There is no intermediary element.Term as used herein " vertically ", " horizontal ", "left", "right" and similar statement are
For illustrative purposes.
As depicted in figs. 1 and 2, the Beam's eye view device 001 of Medical Devices provided by the invention, including：Center calibration element
100 and at least two boundary demarcation parts 200.Center calibration element 100 is used for the center for marking light field, and boundary demarcation part 200 is used for
Mark the border of light field.
In one embodiment, at least part of center calibration element 100 and at least part of boundary demarcation part 200 can be in medical treatment
It is imaged on the flat panel detector of equipment.For example, center calibration element 100 can be in the form of annular discs, its circle centre position can be on flat panel detector
Imaging.Certain center calibration element 100 or other shapes.Center calibration element 100 is removable, so as in flat panel detector
The center of upper record light field.Boundary demarcation part 200 is removable, so as to record the border of light field on flat panel detector.This
Sample, when projecting radiation to the device so that the figure for the launched field that the center and border of light field can be gathered in flat panel detector
Clearly shown as in, so as to directly verify the deviation of light field and launched field.
In another embodiment, at least part of center calibration element 100 is made of radiation shielding material.Selectively, in
The core of heart calibration element 100 is made of radiation shielding material, and center calibration element 100 is removable, to mark the center of light field.
At least part of boundary demarcation part 200 is made of radiation shielding material, and at least two boundary demarcation parts 200 can relatively move, with
Mark the border of light field.It should be noted that radiation shielding material, refers to stronger material of decaying to radiation ray.Such as
The material of the high atomic numbers such as lead, tungsten, gold is stronger to radiation ray decay, is often used as radiation shielding material.In this way, when to
When the device projects radiation so that the center and border of light field can clearly be shown in the image of launched field, so as to straight
Connect verification light field and the deviation of launched field.
In another embodiment, center calibration element 100 includes two intersecting wire parts, this two intersecting wire parts can divide
Independent not mobile, intersection point is used for the center for demarcating light field.At least two boundary demarcation parts 200 are removable, for marking light field
Border.Wherein, two intersecting wire parts are made of radiation shielding material.At least part of boundary demarcation part is by alpha ray shield material
Material is made.In this way, when projecting radiation to the device so that the center and border of light field can be clear in the image of launched field
It has been shown that, so as to directly verify the deviation of light field and launched field.Certainly, in other embodiments, two intersecting wire parts can
It is made with part of radiation shielding material so that intersection point can be imaged on the detector in use.
Embodiment as shown in Figure 1, is provided with Spot detection block 110 on center calibration element 100, Spot detection block 110 is used
In the center of mark light field.Selectively, Spot detection block 110 is movably arranged on center calibration element 100, for being moved to
The center of light field is to be marked.At least two boundary demarcation parts 200 can relatively move between each other, each boundary demarcation part
Border detection block 210 is both provided with 200, border detection block 210 is used for the border for marking light field.110 He of Spot detection block
Border detection block 210 is made by radiation shielding material.In this way, when carrying out Beam's eye view, pass through Spot detection block 110 and side
Boundary's detection block 210 can show the center and border of light field respectively in launched field image, then can directly verify light field and penetrate
Wild deviation.
Further, which further includes mounting bracket 300, and mounting bracket 300 is mountable to medical treatment and sets
It is standby upper, to realize the calibration at center and border in light field instruction verification to light field.It is preferred that if Medical Devices carry detection
System, then mounting bracket 300 be installed on the detector 410 of the Medical Devices.Certainly, Medical Devices can also be that connection is external
Detection system carry out dose measurement, such as the dose measuring systems such as matrix, mapcheck, then mounting bracket 300 also may be used
To be installed on those dose measuring systems.
The following embodiment of the present invention carries detection system with Medical Devices, and mounting bracket 300 is installed on Medical Devices
Detector 410 on exemplified by illustrate.
Wherein, calibration element 100 and at least two boundary demarcation part 200 in center can be movably arranged at mounting bracket
On 300.When mounting bracket 300 is installed on detector 410, light field lamp is opened, ray cast forms light on detector 410
Open country, then can make the overlapping margins of border detection block 210 and light field, so as to mark by mobile at least two boundary demarcation parts 200
Go out the border of light field.At the same time by Mobility Center calibration element 100, and the position of Spot detection block 110 is adjusted, make Spot detection block
110 overlap with the center of light field, so as to mark the center of light field.Due to Spot detection block 110 and border detection block 210 by
Radiation shielding material is made, therefore, when open radial burner, radiation ray be projected in detector 410 and on detector display screen
When forming launched field image, due to Spot detection block 110 and the inhibition of border detection block 210, center is corresponded in launched field image
The position of detection block 110 and the position of border detection block 210, form the figure on the center for representing light field and the border of light field respectively
Picture.In such manner, it is possible to light field and launched field are recorded at the same time in the image of detector collection, by analyzing the image of collection,
Light field and the deviation of launched field can be determined, without film.So that the light field instruction verification of launched field is more convenient quick,
As a result it is more accurate and visual, and cost is effectively reduced, improve efficiency.
Wherein, the structure of center calibration element 100 and shape can be a variety of.As a kind of enforceable mode, center mark
It is the body of rod to determine part 100.The shape of cross section of the body of rod can be circular, square, triangle or polygon.Center calibration element
The first mounting groove is offered along the extending direction of center calibration element 100 on 100, Spot detection block 110 is slidably mounted on
In one mounting groove.It is preferred that Spot detection block 110 is sphere, in this way, the projection of shape of Spot detection block 110 is substantially in round dot
Shape, more can accurately mark the center of light field.The material of Spot detection block 110 can be lead.In addition, the first mounting groove
The shape and size of width be adapted to the shape size of Spot detection block 110 so that when center detection block 110 is moved to
Behind position, the position can be fixed on respect to the first mounting groove.
In other embodiments, center calibration element 100 can also be hollow tube body, and Spot detection block 110 can be hollow
Tube body in move, and be fixed on some position of tube body as needed.
The structure and shape of boundary demarcation part 200 can be a variety of.As a kind of enforceable mode, boundary demarcation part
200 be the body of rod.The shape of cross section of the body of rod can be circular, square, triangle or polygon.On boundary demarcation part 200
Multiple second mounting grooves are arranged at intervals with along the extending direction of boundary demarcation part 200；Border detection block 210 is multiple, Duo Gebian
Correspondence is installed in multiple second mounting grooves boundary's detection block 210 respectively.
It is preferred that border detection block 210 is in cylindrical shape.The material of border detection block 210 can be lead.In addition, second
The shape size of mounting groove is adapted with the shape size of border detection block 210, so that border detection block 210 can be fixedly mounted
In the second mounting groove.Border detection block 210 is in cylindrical shape, it is with certain length.In this way, the throwing of border detection block 210
The substantially rectilinear shape of shadow shape.And multiple border detection blocks 210 are arranged at intervals along the extending direction of boundary demarcation part 200, in this way,
Each border detection block 210 on each boundary demarcation part 200 can connect being aligned.When each boundary demarcation part 200 of movement, pass through
The line of each border detection block 210 more can accurately define the shape of light field, to mark the border of light field.
In other embodiments, boundary demarcation part 200 can also be hollow pipe body shape, and each border detection block 210 can be with
Directly it is bonded on the inner wall of tube body.
As a kind of enforceable mode, boundary demarcation part 200 is four, and four boundary demarcation parts 200 surround rectangle；In
Heart detection block 110 moves in the rectangular extent.Usually, in the light field instruction verification of launched field, will usually wild shape be tested
Shape is set as regular shape in order to test, such as rectangle.By designing four boundary demarcation parts 200, four boundary demarcations
Part 200 is linear, and four boundary demarcation parts 200 is surrounded rectangle, each in order to be moved according to the light field shape of rectangle
A boundary demarcation part 200, so as to mark the border of light field.So so that stronger to the conformability on the border of light field.
Certainly, in other embodiments, rectangle can also be marked by two boundary demarcation being rectangular in shape parts 200
Light field.Or, it is assumed that the test open country of Medical Devices is set to other shapes, such as circular, then can be by multiple arc-shaped
Boundary demarcation part 200 marks circular light field.
And the form that center calibration element 100 and boundary demarcation part 200 are movably disposed in mounting bracket 300 can be
It is a variety of.For example, mounting bracket 300 is rectangular frame, four boundary demarcation parts 200 are respectively parallel to mounting bracket 300
Four edges.Center calibration element 100 is set along a line parallel to mounting bracket 300.
The frame of mounting bracket 300 can be body of rod shape, and the both ends of each boundary demarcation part 200 can be arranged by slip ring
It is in mounting bracket 300 and removable.The both ends of center calibration element 100 also can by slip ring sleeve be arranged on mounting bracket 300 on and
It is removable.Alternatively, the frame of mounting bracket 300 has sliding slot, the both ends of each boundary demarcation part 200 can be slided by sliding block to be set
In sliding slot, mounting bracket 300 is movably arranged at so as to fulfill boundary demarcation part 200.And the both ends of center calibration element 100
Sliding slot can be slidedly arranged on by sliding block, to realize that center calibration element 100 is movably arranged at mounting bracket 300.
Above-mentioned mounting bracket 300, boundary demarcation part 200 and center calibration element 100 can use aluminium, aluminium alloy or ABS modelings
Material etc. is made.In this way, can not only ensure the intensity and quality of the Beam's eye view device 001 of the embodiment of the present invention, but also it is easy to add
Work, moreover it is possible to cost-effective.
The Beam's eye view device 001 of the Medical Devices of the embodiment of the present invention, it is simple in structure, it is light and handy flexible.In use, can be straight
Connect the surface that mounting bracket 300 is adhered to detector 410 using adhesive tape.In other embodiments, can be in detector 410
Surface fixed structure is set, mounting bracket 300 can be fixed on detector 410 by the fixed structure.Optionally, it is described
Connection structure corresponding with the fixed structure can also be set in mounting bracket 300.When needing to mark the border of light field, when each
After boundary demarcation part 200 is moved into place, using adhesive tape by each 200 stationary positioned of boundary demarcation part, so as to mark light field
Border.When needing to mark the center of light field, after center calibration element 100 is moved into place, center calibration element 100 is consolidated using adhesive tape
Positioning.Then Mobility Center detection block 110, makes Spot detection block 110 be aligned with light field center, recycles adhesive tape to examine center
110 stationary positioned of block is surveyed, so as to mark the center of light field.In the present embodiment, only using adhesive tape as a kind of fixed form, at it
In its embodiment, other fixed structures can be used to be fixed.Preferably, fixed structure is to the less material of ray attenuation
Material is made, such as plastics.
As shown in figure 3, one embodiment of the invention additionally provides a kind of Beam's eye view method of Medical Devices, using above-mentioned
The Beam's eye view device 001 of Medical Devices.Illustrated below by taking Medical Devices are accelerator for electron therapy as an example.In other realities
Apply in example, can also be verified using the external detector for being suitable for receiving ray.
Referring to Fig. 2, it is necessary to explanation, accelerator for electron therapy be by etc. center principle design.In theory, in machine
In whole angular ranges of operation, three rotation axis (rotation axis A, hollow shaft for the treatment of head 420 of rotary frame 400 of machine
B, also referred to as beam centre axis B, the hollow shaft of therapeutic bed) it should intersect at a point, which is known as isocenter point O.Then wait median plane
It is exactly by isocenter point O and the plane vertical with beam B.
It the described method comprises the following steps：
S100：To 410 throw light of detector, to form light field.Wherein, detector 410 is suitable for receiving ray.
S200：Mobility Center calibration element 100, so that Spot detection block 110 is overlapped with light field center；Moving boundary calibration element
200, so that border detection block 210 and light field overlapping margins.
S300：To 410 projection radiation of detector, to form launched field, and detector 410 receives ray.
S400：The image of detector collection is analyzed, to determine the deviation of light field and launched field.
Specifically, before step S100, the Beam's eye view device 001 of above-mentioned Medical Devices is installed on medical treatment first and is set
On standby detector 410.Such as the mounting bracket 300 of the Beam's eye view device 001 of Medical Devices is adhered to spy using adhesive tape
Survey the surface of device 410.Then the position of detector 410 is adjusted, detector 410 is located at the grade median plane of Medical Devices (in Fig. 2
By O points and perpendicular to the plane of B axle).In this way, light and ray can be projected on detector 410 with shape respectively respectively
Into light field and launched field.
Further, in step S400, the image of the analysis collection of detector 410, to determine the deviation of light field and launched field
Step specifically includes：
S410:The imager coordinate of analysis center's detection block 110 and the centre coordinate of launched field, obtain in light field center and launched field
The deviation of the heart.Since Spot detection block 110 is made of radiation shielding material, be projected in detector 410 when radiation ray and
When forming launched field image on the detector, due to the inhibition of Spot detection block 110, Spot detection block is corresponded in launched field image
110 position forms the image at the center for representing light field.Described above, the projection of Spot detection block 110 is in point-like, therefore is analyzed
The centre coordinate of the point coordinates and launched field image, you can obtain the deviation at light field center and launched field center.In one embodiment, in
The image of heart detection block 110 has a less size, then using the geometric center of the image of the reduced size as light field center.
S420：Certain point of the image of border detection block 210 is analyzed to the vertical range on launched field border, is obtained at the position
Light field border and launched field border deviation；Analyze the light field border and launched field side of multiple points of the image of border detection block 210
The deviation on boundary, to obtain the maximum of deviation.
Since border detection block 210 is made of radiation shielding material, when radiation ray be projected in detector 410 and
When launched field image is formed on detector, due to the inhibition of border detection block 210, border detection block is corresponded in launched field image
210 position forms the image on the border for representing light field.Described above, the projection of border detection block 210 is in wire, it is therefore desirable to
The coordinate of each point of the line is analyzed to the vertical range on launched field border, that is, obtains the inclined of the light field border of each point and launched field border
Difference, so as to obtain the maximum of deviation, which is the deviation on light field border and launched field border during the light field of launched field indicates.
In this way, after the deviation of light field and launched field is obtained, if the deviation exceeds prescribed limit, then adjustment is needed to treat
First 420 position, so that the deviation of the launched field of light field is in prescribed limit.
Yet further, in step S300 to 410 projection radiation of detector, the step of to form launched field after, also wrap
Include S400 ＇：
Compare the scope of launched field and predetermined coverage field, obtain the deviation of the numeral instruction of launched field.
It should be noted that predetermined coverage field is set before beam is gone out to the ray of accelerator for electron therapy,
Represent out the drop shadow spread that the ray of beam should be formed.For example, it is assumed that the ray set go out beam formation predetermined coverage field as
100mm × 100mm, and the scope for the actual launched field that detector detects is 99mm × 99mm, then the numeral instruction of launched field is inclined
Difference is 1mm.Assuming that the deviation exceeds prescribed limit at this time, then adjustment treatment head 420 is needed to go out beam, so that the numeral of launched field refers to
Show deviation in prescribed limit.
The Beam's eye view method of the Medical Devices of the present embodiment, can directly and accurately obtain the light field instruction deviation of launched field,
The numeral instruction deviation of launched field can also be directly and accurately obtained at the same time, instruction is carried out to launched field test so as to simple and quick
Card.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope that this specification is recorded all is considered to be.
Embodiment described above only expresses the several embodiments of the present invention, its description is more specific and detailed, but simultaneously
Cannot therefore it be construed as limiting the scope of the patent.It should be pointed out that come for those of ordinary skill in the art
Say, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (12)
- A kind of 1. Beam's eye view device of Medical Devices, it is characterised in that including：Center calibration element and at least two boundary demarcations Part；Spot detection block is provided with the center calibration element, the Spot detection block is used for the center for marking light field；It is described extremely Few two boundary demarcation parts can relatively move between each other, and border detection block, institute are both provided with each boundary demarcation part State the border that border detection block is used to mark light field；The Spot detection block and the border detection block are made by radiation shielding material.
- 2. the Beam's eye view device of Medical Devices according to claim 1, it is characterised in that the center calibration element is bar Body, offers the first mounting groove on the center calibration element, the Spot detection block is removable along the extending direction of center calibration element It is installed on dynamicly in first mounting groove.
- 3. the Beam's eye view device of Medical Devices according to claim 1, it is characterised in that the boundary demarcation part is bar Body, is arranged at intervals with multiple second mounting grooves on the boundary demarcation part along the extending direction of boundary demarcation part；The border inspection Block is surveyed to be multiple, correspondence is installed in multiple second mounting grooves multiple border detection blocks respectively.
- 4. the Beam's eye view device of Medical Devices according to claim 1, it is characterised in that the boundary demarcation part is four A, four boundary demarcation parts surround rectangle；The Spot detection block moves in the rectangular extent.
- 5. the Beam's eye view device of Medical Devices according to claim 1, it is characterised in that further include mounting bracket, institute State center calibration element and the boundary demarcation part is movably disposed in the mounting bracket.
- 6. the Beam's eye view device of a kind of Medical Devices, it is characterised in that including center calibration element and at least two boundary demarcations Part；The core of the center calibration element is made of radiation shielding material, and the center calibration element moves, for marking light Wild center；At least part of the boundary demarcation part is made of radiation shielding material, and at least two boundary demarcations part can Relative movement, for marking the border of light field.
- 7. the Beam's eye view device of a kind of Medical Devices, it is characterised in that including center calibration element and boundary demarcation part；In described Heart calibration element includes two intersecting wire parts, and described two intersecting wire parts can be moved independently, and intersection point is used to demarcate The center of light field；The boundary demarcation part at least two, at least two boundary demarcation parts move, for marking light field Border；Described two intersecting wire parts are made of radiation shielding material, and at least part of the boundary demarcation part is by ray Shielding material is made.
- 8. the Beam's eye view device of a kind of Medical Devices, it is characterised in that including center calibration element and at least two boundary demarcations Part；The center calibration element moves, and for marking the center of light field, the boundary demarcation part moves, for marking light field Border；At least part of the center calibration element and at least part of the boundary demarcation part can be visited in the tablet of Medical Devices Survey on device and be imaged.
- 9. a kind of Beam's eye view method of Medical Devices, it is characterised in that using such as the medical treatment of claim 1-8 any one of them The Beam's eye view device of equipment；It the described method comprises the following steps：To detector throw light, to form light field；The detector is suitable for receiving ray；Mobility Center calibration element, so that Spot detection block is overlapped with light field center；Moving boundary calibration element, so that border detection block and light field overlapping margins；To the detector projection radiation, to form launched field, and the detector receives the ray；The image of the detector collection is analyzed, to determine the deviation of light field and launched field.
- 10. the Beam's eye view method of Medical Devices according to claim 9, it is characterised in that thrown described to detector Penetrate before the step of light is to form light field, it is further comprising the steps of：The position of the detector is adjusted, the detector is located at the grade median plane of Medical Devices.
- 11. the Beam's eye view method of Medical Devices according to claim 9, it is characterised in that the analysis detector is adopted The image of collection, the step of to determine the deviation of light field and launched field, specifically includes：The imager coordinate of the Spot detection block and the centre coordinate of the launched field are analyzed, obtains light field center and launched field center Deviation；Certain point of the image of the border detection block is analyzed to the vertical range on launched field border, obtains the light field side at the position Boundary and the deviation on launched field border；The light field border of multiple points and the deviation on launched field border of the image of the border detection block are analyzed, to obtain deviation most Big value.
- 12. the Beam's eye view method of Medical Devices according to claim 9, it is characterised in that thrown described to detector Ray, the step of to form launched field after, it is further comprising the steps of：Compare the scope of the launched field and predetermined coverage field, obtain the deviation of the numeral instruction of launched field.
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