CN207036390U - A kind of light field detector - Google Patents
A kind of light field detector Download PDFInfo
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- CN207036390U CN207036390U CN201720740155.8U CN201720740155U CN207036390U CN 207036390 U CN207036390 U CN 207036390U CN 201720740155 U CN201720740155 U CN 201720740155U CN 207036390 U CN207036390 U CN 207036390U
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- plate face
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Abstract
The utility model discloses a kind of light field detector, is related to the structure-design technique field of radiotherapy equipment detection device, is detected for radiotherapy equipment light field, including：Bottom plate, level meter, light-sensitive element leveling pin, its bottom plate are provided with the first plate face, the second plate face, and level meter is fixedly installed in the first plate face, including the first level instrument of measurement vertical direction and the second level meter for measuring horizontal direction；Light-sensitive element is fixedly installed on two concentric circles for waiting central angle in the first plate face, and leveling pin is arranged in the second plate face close to the edge of the second plate face, for supporting and leveling bottom plate at equal intervals.The light field of radiotherapy equipment is detected using light field detector of the present utility model, installation and adjustment are convenient, and accuracy of detection is high, avoid the defects of detection caused by observing by the naked eye detection light field in the prior art is inaccurate.
Description
Technical field
The structure-design technique field of radiotherapy equipment detection device is the utility model is related to, in particular to one
Kind light field detector.
Background technology
It is well known that during the use of radiotherapy equipment medical computerized linear accelerator after installation is complete, to determine
Phase carries out detection adjustment to the light field of radiotherapy instrument, and accurately tumor locus can be irradiated with ensureing in treatment clinical course
Treatment.Wherein, ray can't see, and defining the error of coverage field needs to define by detecting the light field on equal border,
Therefore the accuracy of light field determines the accuracy of launched field indirectly.
In the prior art, the offset error of light field observe by the naked eye light field lamp projection border on detection means with
The mode for the error that coordinate line overlaps is judged on graph paper, and the error of the offset of this method detection light field is larger, accurately
Spend low.
Utility model content
The utility model purpose is solve above-mentioned deficiency of the prior art, there is provided it is a kind of simple and reasonable, can
Improve the light field detector of light field offset detection accuracy.
First purpose of the present utility model is achieved through the following technical solutions：A kind of light field detector is set for radiotherapy
Standby light field detection, including：Bottom plate, it is provided with the first plate face, the second plate face；Light-sensitive element, it is fixedly installed in the first plate face
Wait central angle two concentric circles on；Levelling device, it is arranged on bottom plate, for supporting simultaneously leveling bottom plate.
In such scheme preferably, levelling device includes：Level meter, it is fixedly installed in the first plate face, including measurement
The first level instrument of vertical direction and the second level meter for measuring horizontal direction；Leveling pin, the second plate is arranged at equal intervals
Close to the edge of the second plate face on face, for support baseboard and coordinate level meter leveling bottom plate.
It is preferably in any of the above-described scheme, in addition to power storage portion, power supply is built-in with, power supply is conductive with light-sensitive element
Connection, for being powered to light-sensitive element.
In any of the above-described scheme preferably, the photosensitive area unit size of light-sensitive element is 2mm*2mm.
In any of the above-described scheme preferably, the center of light-sensitive element and radius circular where light-sensitive element, circumference
Intersection point overlaps.
In any of the above-described scheme preferably, leveling pin is provided with threaded rod, close to the second plate face in the second plate face
Edge is provided with screwed hole, and threaded rod coordinates adjustment bottom plate with screwed hole.
In any of the above-described scheme preferably, the quantity for the light-sensitive element being arranged in the first plate face is at least 8.
In any of the above-described scheme preferably, bottom plate is square, the light-sensitive element being placed on the same circle of the first plate face
Center is located at the same point midway to the concentric similar square side of bottom plate respectively.
Any of the above-described scheme is preferably, and first level instrument and the second level meter are arranged in a mutually vertical manner in the first plate face,
And the adjacent both sides of bottom plate are respectively parallel to, wherein, first level instrument is used for the perpendicularity for measuring vertical direction and bottom plate, the second water
Level is used for the levelness for measuring bottom plate.
The beneficial effect of light field detector provided by the utility model is：By setting level meter and leveling pin the bottom of to
Plate carries out leveling, facilitates the regulation to bottom plate, sets light-sensitive element to carry out detection to the border of light field and avoids prior art
In by visually carrying out detecting existing error, improve the accuracy of light field detection, and then improve the accurate of radiotherapy
Degree.
Brief description of the drawings
Fig. 1 is the structure schematic top plan view of light field detector preferred embodiment of the present utility model,；
Fig. 2 is the structure schematic side view of preferred embodiment shown in light field detector Fig. 1 of the present utility model；
Fig. 3 is；The structure that light field of the present utility model detects preferred embodiment shown in Fig. 1 is looked up regarding schematic diagram.
Reference：
1- bottom plates；The plate faces of 11- first；The plate faces of 12- second；21- first level instrument；
The level meters of 22- second；3- light-sensitive elements；4- leveling pins；5- power storages portion.
Embodiment
To make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with of the present utility model excellent
The accompanying drawing in embodiment is selected, the technical scheme in the embodiment of the utility model is further described in more detail.In the accompanying drawings, certainly
Begin to same or similar label eventually to represent same or similar element or there is the element of same or like function.Described
Embodiment is the utility model part of the embodiment, rather than whole embodiments.Below with reference to the implementation of accompanying drawing description
Example is exemplary, it is intended to for explaining the utility model, and it is not intended that to limitation of the present utility model.Based on this practicality
Embodiment in new, the every other reality that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example is applied, belongs to the scope of the utility model protection.Embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
In the description of the present embodiment, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, it is for only for ease of description the present embodiment and simplifies description, rather than indicates or imply meaning
Device or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present embodiment
The limitation of protection domain.
It is to solve in background technology prior art to technological deficiency present in radiotherapy equipment light field detection process, this
Embodiment provides a kind of light field detection device.Referring to the drawings 1- accompanying drawings 3, the light field detection device that the present embodiment provides is used to radiate
The light field detection of therapeutic equipment, including：Bottom plate 1, it is provided with the first plate face 11, the second plate face 12；Level meter, it is fixedly installed on
In one plate face 11, including the first level instrument 21 of measurement vertical direction and the second level meter 22 for measuring horizontal direction；It is photosensitive
Element 3, it is fixedly installed on two concentric circles for waiting central angle in the first plate face 11；Leveling pin 4, is arranged on second at equal intervals
Close to the edge of the second plate face 12 in plate face 12.Bottom plate 1 has certain rigid slab construction to be in uniform thickness, makes bottom plate
1 will not produce the accuracy of influence of crust deformation testing result in use.The making material of bottom plate 1 can be aluminium, aluminium alloy,
One or more in polyethylene, polypropylene, polystyrene or ABS plastic etc., above-mentioned multiple material can absorb X ray,
Clearly contour edge is formed in imaging process.The another object of flat board 1 is set to be to carry other detecting elements, including level
Instrument, light-sensitive element 3 and the leveling pin 4 for adjusting flat board 1, level meter, light-sensitive element 3 and leveling pin 4 are integrated into
On bottom plate 1, make the structure of light field detector more firm and easy to operate.
Level meter is fixedly installed on the edge on bottom plate 1, coordinates adjustment bottom plate 1 in therapeutic bed with leveling pin 4
Placed angle.The level meter being related in the present embodiment includes two kinds, and the quantity of every kind of level meter is at least one, the kind of level meter
Class includes the first level instrument 21 of measurement measurement vertical direction perpendicularity and measures the second level meter of horizontal direction levelness
22.Bottom plate 1 is adjusted by above two level meter, the light field plane for being carried bottom plate 1 is vertical with ray.
Light-sensitive element 3 is arranged on bottom plate 1 at equal intervals.Using the center of bottom plate 1 as the center of circle, light-sensitive element 3 is arranged on this
The center of circle is on the concentric circles in the center of circle, the interval of the light-sensitive element 3 of arbitrary neighborhood two set on same circle is equal, it may also be said to is
The light-sensitive element 3 of arbitrary neighborhood two is in that the angle of central angle is equal with the center of circle, realizes light-sensitive element setting at equal intervals on bottom plate 1
Put, make the light field of test into regular shape, the operation conveniently detected and the accuracy of detection.
Level meter is arranged in the first plate face 11 with light-sensitive element 3, and is used for the placement location of regulating base board 1 and the tune of angle
Flat pin 4 is arranged in the second plate face 12 relative with the first plate face 11.Because bottom plate 1 is the flat board knot with higher stiffness
Structure, rocked to make bottom plate 1 not produced during detection, leveling pin 4 is arranged on the side of the second plate face 12 in the present embodiment
At edge, so bottom plate 1 can be supported to greatest extent and angle adjustment.
The light-sensitive element 3 being related in the present embodiment is a kind of electronic component sensitive to light source, by light-sensitive element 3 to light
Sensitivity characteristic detection light field scope observe by the naked eye more in the prior art there is the higher degree of accuracy.Light is penetrated caused by light source
On light-sensitive element 3, by reaction of the light-sensitive element 3 to the type of light caused by the light source of selection so as to defining light field.
The light field detector that the present embodiment provides in therapeutic bed by setting the bottom plate 1 for being equipped with light-sensitive element 3 to putting
The light field for penetrating therapeutic equipment is detected, and overcomes lacking for light field inaccuracy caused by observing by the naked eye detection in the prior art
Fall into, and accuracy of detection is high, and then improve the accuracy of the progress radiotherapy of radiotherapy apparatus.
Further, in addition to power storage portion 5, be built-in with power supply, power supply is conductively connected with light-sensitive element 3, for
Light-sensitive element 3 is powered.Whether judge illumination by differential responses of the light-sensitive element 3 in the case where having illumination and no light two states
The light field scope surrounded beyond light-sensitive element 3.The resistance under light conditions of light-sensitive element 3 reduces, brightness increase；In no light
When light-sensitive element 3 do not work or can glimmer.To avoid the influence that power storage portion 5 is detected to light field, so power supply is deposited
Storage portion is arranged in the second plate face 12.
Further, the photosensitive area unit size of light-sensitive element 3 is 2mm*2mm.It is special according to the arrangement of light-sensitive element 3
Point, light-sensitive element 3 light field detection large deviations reach more than 1mm then exist deviation light-sensitive element it is reactionless, then to equipment
Debugged, until all light-sensitive elements 3 can react just qualified.The photosensitive area unit of light-sensitive element 3 is arranged to
2mm*2mm is the most accurate numerical value in equipment adjustable extent.That is using the light field detector of the present embodiment to light
The worst error that open country is detected is not over 1mm.
The center of light-sensitive element 3 overlaps with the intersection point of radius circular where light-sensitive element 3, circumference.Specific explanations are as follows：
Light-sensitive element 3 is arranged on using the center of bottom plate 1 as on the concentric circles in the center of circle, the quantity of concentric circles is two in the present embodiment at equal intervals
It is individual, wherein a diameter of 10cm of inner circle, outside diameter 20cm, the light-sensitive element 3 on one of circle and distance on another circle
The center of the line of nearest light-sensitive element and two light-sensitive elements 3 line coincident with the center of circle respectively, the center of light-sensitive element 3 is set
Put on the circumference of concentric circles.
Further, leveling pin 4 is provided with threaded rod, is provided with the second plate face 12 close to the edge of the second plate face 12
Screwed hole, threaded rod coordinate adjustment bottom plate with screwed hole.Threaded adjusting has continuity and can learn regulation by screw thread
Size, because equal during spacing on same threaded rod between adjacent thread.The original for not using pivot pin that bottom plate 1 is adjusted
Because adjustable range is discontinuous when being pivot pin regulation and needs fastener to be fixed.Coordinated using threaded rod and screwed hole and adjusted
Bottom plate 1 is not only easy to operate not to need fastener to be fixed, and degree of regulation is high.
Further, the quantity for the light-sensitive element 3 being arranged in the first plate face 11 is at least four bottom plates 1 for square,
The center for the light-sensitive element 3 being placed on 11 same circle of the first plate face is located at the same concentric similar pros to bottom plate 1 respectively
The point midway on the side of shape.First level instrument 21 is mutually perpendicular to parallel with 1 adjacent both sides of bottom plate respectively set with the second level meter 22
It is placed in the first plate face 11, wherein, first level instrument 21 is used for the perpendicularity for measuring vertical direction and bottom plate 1, the second level meter
22 levelness for measuring bottom plate.
Without lighting during radiation exposure light-sensitive element 3 in radiotherapy equipment, normal light is lighted when irradiating light-sensitive element 3.Light
Quick element 3 has selection index system to the spectral characteristic of incident light, i.e. light-sensitive element 3 has different spirits to the incident light of different wave length
Sensitivity.The relatively photosensitive inspiration degree of light-sensitive element 3 has certain relation with incident wavelength, according to the characteristic of light-sensitive element 3,
The light field detector of the present embodiment is detected using light-sensitive element 3 to the border of light field, with the luminous detection light field of ordinary light source.
During the light field detector that specifically used the present embodiment provides, equipment is placed in therapeutic bed, passed through
The cooperation of second level meter 22 and leveling pin 4 is by the leveling of bottom plate 1；Laser rays aligning equipment vertical direction setting-out；By accelerator
Light field is tuned into 10cmx10cm, ssd=100cm；Turn on the power, close treatment room illumination lamp；Light field is opened, is detected.If symbol
Standardization, four light-sensitive elements on a diameter of 10cm circle can all light, if existing more than deviation 1mm, the light of correspondence position
Quick element is not lighted, and then radiotherapy equipment is debugged, until positioned at the four of 10cmx10cm light field four edges midpoints
Individual light-sensitive element 3 is all shinny.Then light field is adjusted to 20cmx20cm, repeats said process, until a diameter of 20cm's is concentric
Upper four light-sensitive elements 3 of circle are all shinny.The accelerator light field size for light field detect regulation in the present embodiment is not limited to
Above two, it can also be the other sizes in adjustable extent.
Finally it should be noted that：Above example is only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：
It can still modify to the technical scheme described in foregoing embodiments, or which part technical characteristic is carried out etc.
With replacement；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the utility model technology
The spirit and scope of scheme.
Claims (9)
1. a kind of light field detector, the light field for radiotherapy equipment detects, it is characterised in that including：
Bottom plate (1), it is provided with the first plate face (11), the second plate face (12)；
Light-sensitive element (3), it is fixedly installed on two concentric circles for waiting central angle on first plate face (11)；
Levelling device, it is arranged on the bottom plate (1), for supporting simultaneously bottom plate (1) described in leveling.
2. light field detector as claimed in claim 1, it is characterised in that the levelling device includes：
Level meter, be fixedly installed on first plate face (11), including measurement vertical direction first level instrument (21) and
Measure the second level meter (22) of horizontal direction；
Leveling pin (4), it is arranged on second plate face (12) close to the edge of second plate face (12), uses at equal intervals
In the support bottom plate (1) and coordinate bottom plate (1) described in the level meter leveling.
3. light field detector as claimed in claim 1, it is characterised in that also including power storage portion (5), power supply is built-in with,
The power supply is conductively connected with the light-sensitive element (3), for being powered to the light-sensitive element (3).
4. light field detector as claimed in claim 1, it is characterised in that the photosensitive area unit chi of the light-sensitive element (3)
Very little is 2mm*2mm.
5. light field detector as claimed in claim 1, it is characterised in that the center of the light-sensitive element (3) with it is described photosensitive
Circular radius, the intersection point of circumference overlap where element (3).
6. light field detector as claimed in claim 2, it is characterised in that the leveling pin (4) is provided with threaded rod, close
The edge of second plate face (12) is provided with screwed hole, and the threaded rod coordinates with the screwed hole adjusts the bottom plate.
7. light field detector as claimed in claim 1, it is characterised in that the light being arranged on first plate face (11)
The quantity of quick element (3) is at least 8.
8. light field detector as claimed in claim 1, it is characterised in that the bottom plate (1) is square, is placed in described first
The center of the light-sensitive element (3) on plate face (11) same circle is located at the same concentric phase with the bottom plate (1) respectively
Like the point midway on the side of square.
9. light field detector as claimed in claim 2, it is characterised in that the first level instrument (21) is horizontal with described second
Instrument (22) is arranged in a mutually vertical manner on first plate face (11), and is respectively parallel to the adjacent both sides of the bottom plate (1), wherein,
First level instrument (21) is used for the perpendicularity for measuring vertical direction and the bottom plate, and the second level meter (22) is used to measure the bottom
The levelness of plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740155.8U CN207036390U (en) | 2017-06-23 | 2017-06-23 | A kind of light field detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720740155.8U CN207036390U (en) | 2017-06-23 | 2017-06-23 | A kind of light field detector |
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| Publication Number | Publication Date |
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| CN207036390U true CN207036390U (en) | 2018-02-23 |
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ID=61468648
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| CN201720740155.8U Active CN207036390U (en) | 2017-06-23 | 2017-06-23 | A kind of light field detector |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109745634A (en) * | 2018-12-25 | 2019-05-14 | 江苏海明医疗器械有限公司 | A kind of medical accelerator multi-diaphragm collimator test device |
| CN112726670A (en) * | 2021-02-09 | 2021-04-30 | 北京住总集团有限责任公司 | Automatic leveling system and method suitable for steel pipe column working platform |
| CN114847884A (en) * | 2022-05-10 | 2022-08-05 | 苏州大学附属儿童医院 | A appurtenance for children scoliosis screening |
-
2017
- 2017-06-23 CN CN201720740155.8U patent/CN207036390U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109745634A (en) * | 2018-12-25 | 2019-05-14 | 江苏海明医疗器械有限公司 | A kind of medical accelerator multi-diaphragm collimator test device |
| CN112726670A (en) * | 2021-02-09 | 2021-04-30 | 北京住总集团有限责任公司 | Automatic leveling system and method suitable for steel pipe column working platform |
| CN112726670B (en) * | 2021-02-09 | 2022-05-13 | 北京住总集团有限责任公司 | Automatic leveling system and method suitable for steel pipe column working platform |
| CN114847884A (en) * | 2022-05-10 | 2022-08-05 | 苏州大学附属儿童医院 | A appurtenance for children scoliosis screening |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100013 Block A 1703, Building No. 1, 36 North Third Ring Road, Dongcheng District, Beijing Patentee after: Beijing Global Medical Technology Group Co., Ltd. Address before: 100013 Block A 1703, Building No. 1, 36 North Third Ring Road, Dongcheng District, Beijing Patentee before: BEIJING ALLCURE MEDICAL TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |