CN206867514U - Radiation shield device and radiotherapy system - Google Patents
Radiation shield device and radiotherapy system Download PDFInfo
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- CN206867514U CN206867514U CN201621290357.9U CN201621290357U CN206867514U CN 206867514 U CN206867514 U CN 206867514U CN 201621290357 U CN201621290357 U CN 201621290357U CN 206867514 U CN206867514 U CN 206867514U
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- 238000001959 radiotherapy Methods 0.000 title claims abstract description 20
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- 239000000306 component Substances 0.000 description 42
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- 230000005611 electricity Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
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- 238000012216 screening Methods 0.000 description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 5
- 229910052721 tungsten Inorganic materials 0.000 description 5
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- Radiation-Therapy Devices (AREA)
Abstract
Field of radiation therapy is the utility model is related to, proposes that a kind of radiation shield device and the radiotherapy system with the radiation shield device, wherein radiation shield device include at least two radiation shields：First radiation shield is photon screen layer, for carrying out photon shielding to electronic component, second radiation shield is electronic shield layer, and for carrying out electronic shield to electronic component, first radiation shield is arranged on the side of second radiation shield away from the electronic component.Radiation shield device of the present utility model includes photon screen layer and electronic shield layer, so as to shield most of radiation, effectively improves the service life of electronic component and improves the security of radiotherapy.
Description
Technical field
Field of radiation therapy is the utility model is related to, more particularly to a kind of radiation in radiotherapy unit shields
Device.
Background technology
With the development of linear accelerator, the increase of precision is treated, linear accelerator plays more next in treating cancer field
More important effect.Linear accelerator utilizes rays break cancer cell, and reduces what patient was subject to over the course for the treatment of as far as possible
The injury of non-treatment ray.Thus, in the design of linear accelerator, shielding design be undoubtedly protect one of patient it is most important
Part, relatively good shielding design can largely reduce injury of the ray to patient.Also, have in linear accelerator
Many electronic components, such as FPGA plates, it is the core component of control unit motion, is easy to damage under the direct irradiation of ray
Bad, experiment display, direct irradiation 10000MU will be damaged.For example, MLC in the treatment head of the accelerator products of certain existing manufacturer
Plank needs to change once for 2~3 years.On the one hand plank damage needs producer to change, add machine maintenance cost, the opposing party
Face, add the Operative risk of patient.
, it is necessary to which the part of shielding mainly includes two parts in the shielding design of existing linear accelerator：First, accelerate
Around pipe, two, treatment head.Accelerating tube is used to accelerate to high energy under microwave electric field effect from electron gun injected electrons, in order to
Realize that the function of accelerating tube has more electronic component around it, these electronic components are integrated on circuit board.Treatment head
Inside also there are multiple critical components, such as example of primary collimator, expansion device, ionisation chamber, tungsten door and multi-leaf optical grating, these critical components
For carrying out Energy distribution regulation, conformal regulation, dose monitoring etc. to beam, its controlled movement is in electronic component.No matter accelerate
Electronic component in pipe or treatment head is all easily influenceed by radiation such as electronics, photons, causes its service life shorter.One
As directly non-treatment is decayed with ray using the high density material such as certain thickness lead, tungsten.
In traditional design, electronic component is shielded using high density material, and only considers the shielding to photon, but
It is that photon shielding is difficult to improve shield effectiveness by increasing thickness after certain magnitude is reached, thus can only finally changes electronics member
Part.
Utility model content
The utility model provides a kind of radiation shield device, including：At least two radiation shields：First radiation shield
Layer is photon screen layer, and for carrying out photon shielding to electronic component, the second radiation shield is electronic shield layer, for electricity
Subcomponent carries out electronic shield, and first radiation shield is arranged on second radiation shield away from the electronic component
Side.
Optionally, the radiation shield device also includes the 3rd radiation shield, and the 3rd radiation shield is electronics
Screen layer, side of first radiation shield away from second radiation shield is arranged on, for electronics member
Part carries out electronic shield.
Optionally, the radiation shield device also includes electro-magnetic screen layer, for carrying out electromagnetic screen to the electronic component
Cover.
Optionally, the radiation shield device includes being used for the receiving space for accommodating the electronic component and towards the receipts
Hold the entrance in space.
Optionally, the radiation shield device also includes the cover plate for blocking the entrance.
Optionally, the radiation shield device also includes the passage for connecting the receiving space and exterior space.
Optionally, the radiation shield device is platy structure.
The utility model additionally provides a kind of radiotherapy system, including main body rack；Treated arms and treatment head, it is described to control
The side of the main body rack is fixed in the one end for treating arm, and the other end stretches out, and the treatment head is fixed on the treated arms
The other end；Radiation shield device, for carrying out radiation shield to electronic component.
Optionally, the radiation shield device is arranged in the treated arms and/or the treatment head.
The utility model additionally provides a kind of radiotherapy system, including main body rack；Treated arms and treatment head, it is described to control
The side of the main body rack is fixed in the one end for treating arm, and the other end stretches out, and the treatment head is fixed on the treated arms
The other end；Radiation shield device, for carrying out radiation shield to electronic component, the radiation shield device is sandwich construction.
Relative to prior art, radiation shield device of the present utility model includes photon screen layer and electronic shield layer, from
And most of radiation can be shielded, effectively improve the service life of electronic component and improve the security of radiotherapy；
Further, radiation shield device of the present utility model includes at least two electronic shield layers, one of electronics
Screen layer is positioned close to the position of beam, so as to reduce the particle for scattering to accelerator internal layer, reduces to treatment beam and other
The influence of device；
Further, radiation shield device of the present utility model includes electro-magnetic screen layer, can be electromagnetically shielded, and reduces
Influence of the electromagnetic radiation to electronic component.
Brief description of the drawings
, below will be to institute in embodiment or description of the prior art in order to illustrate more clearly of the technical solution of the utility model
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only more of the present utility model
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 is the structural representation for the radiotherapy system that the embodiment of the utility model one provides；
Fig. 2 is the structural representation for the radiation shield device that the embodiment of the utility model one provides；
Fig. 3 embodiment provides sectional view of the radiation shield device along I-I direction；
Fig. 4 embodiment provides sectional view of another radiation shield device along I-I direction；
Fig. 5 embodiment provides sectional view of another radiation shield device along I-I direction；
Fig. 6 embodiment provides sectional view of another radiation shield device along I-I direction；
Fig. 7 is the structural representation for the radiation shield device that another embodiment of the utility model provides.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the premise of creative work
Lower obtained every other embodiment, belong to the scope of the utility model protection.
Radiation shield device provided by the utility model comprises at least photon screen layer and electronic shield layer, can effectively shield
Most of radiation is covered, suitable for many environment, such as space environment, Medical Devices, be particularly suitable for use in radiotherapy equipment.In order to
Preferably technical scheme is illustrated, the technical solution of the utility model carried out by taking radiotherapy equipment as an example herein clear
Chu, complete description, but the scope of protection of the utility model is not limited with this.
Fig. 1 is the structural representation for the radiotherapy system that the embodiment of the utility model one provides.With reference to shown in figure 1, put
Penetrating treatment system includes linear accelerator 10, sick bed 20.The linear accelerator 10 is used to produce high level (such as megavolt level)
Beam (electron beam or X ray) so as to being treated to target area (including tumour), it include main stand 11, treated arms 12 and
Treatment head 13, the main stand 11 can be around rotary shaft A rotations (as shown in Figure 1), so as to realize the treatment of different angle, institute
The side of main stand is fixed in the one end for stating treated arms 12, and the other end stretches out, and inside, which has, to be used to accelerate to electronics
The accelerating tube of high energy, the treatment head 13 are fixed on the other end of treated arms 12, for carrying out Energy distribution regulation to beam, fitting
Shape regulation, dose monitoring etc..The linear accelerator 10 can also include (the Electronic of electronic portal image device 14
Portal Imaging Device, abbreviation EPID), it is imaged for receiving beam, such as in radiation therapy process, profit
It is imaged with EPID real-time reception beams, position is put so as to real-time verification.The linear accelerator 10 is not by the present embodiment
Disclosed limitation, it can also produce the beam of KV level and be used to be imaged target area.
The sick bed 20 is used to carry patient, and target area is moved into the isocenter point O of linear accelerator 10 (such as Fig. 1 institutes
Show), the treatment head 13 sends beam (such as pencil-beam, beam centre axle B are as shown in Figure 1) to patient, so as to enter to patient
Row treatment.
The radiotherapy system also includes radiation shield device, and can be arranged inside or outside linear accelerator 10 needs
The position to be shielded, for carrying out radiation shield to the electronic component in radiotherapy system, especially to accelerating tube and/or control
The electronic component treated in head carries out radiation shield.The radiation shield device can be fixed on by existing manner accelerating tube and/
Or the surrounding electronic component in treatment head, it is mainly used in shielding the electronics and photon of non-treatment, reduces as far as possible to electricity
The influence of subcomponent, extend the service life of electronic component.Radiation shield device in the present embodiment is sandwich construction, wherein,
At least one layer of structure is used to shield electronics, and at least one layer of structure is used to shield photon.In the utility model, radiation shield is filled
The shape put is without limiting, as long as it can effective radiation-screening.
Fig. 2 is the structural representation for the radiation shield device that the embodiment of the utility model one provides.With reference to shown in figure 2, spoke
It is 3-D solid structure to penetrate screening arrangement 200, and the radiation shield device 200 includes being used for the receiving space for accommodating electronic component
201 and the entrance 202 towards the receiving space 201, electronic component to be shielded can be placed on the receipts through entrance 202
Hold in space 201.
Because electronic component needs to control the motion of accelerating tube or treatment head inner part, therefore electronic component needs and motion
Part is attached, that is to say, that the radiation shield device 200 in the present embodiment also includes connection receiving space 201 and radiation
The passage of the exterior space of screening arrangement 200, electronic component are attached with moving component, and the passage can be entrance 202,
Radiation shield device 200, which can also be arranged on, need not carry out the side of radiation shield.
In the present embodiment, radiation shield device 200 can also include be used for conceal the entrance 202 removable cover 203, its
Structure can be identical with the sandwich construction of the other parts of radiation shield device 200, and can open, and can close, so as to keep away
Exempt from radiation and electronic component is irradiated at entrance 202, so as to extend the service life of electronic component.Certainly, if the side of entrance 202
Radiation is weaker, and the structure of removable cover 203 can also be different from the structure of other parts, can be set according to real needs
Put；If radiationless in the side of entrance 202, cover plate 203 can also omit.The connected mode of removable cover 203 can be any
The mobilizable connected mode of kind, the rotary type connection being not limited in Fig. 2.
Radiation shield device in the present embodiment includes sandwich construction.Fig. 3 embodiment provides radiation shield device edge
The sectional view in I-I direction.
With reference to shown in figure 3, the radiation shield device 300 includes two radiation shields, is photon successively from outside to inside
Screen layer 301 and electronic shield layer 302, electronic shield layer 302 are internally formed receiving space 303, for housing electricity to be shielded
Subcomponent.
Wherein, photon screen layer 301 is made up of high density material, such as tungsten, lead, gold, for the photon to non-treatment beam
Decayed part；In photon screen layer 301, photon and high density material interaction can produce electronics, therefore, in photon
The inner side of screen layer 301 sets electronic shield layer 302, produced by absorbing lower energy photon and photon in photon screen layer 301
Electronics, and electronic shield layer 302 is made up of low density material, such as aluminium, copper, iron, graphite, and therefore, electronic shield layer 302 exists
Carry out hardly producing photon while effectively shielding, therefore, the radiation shield device 300 that the present embodiment provides can be to electricity
Son and photon are effectively shielded.
In the present embodiment, the thickness of photon screen layer 301 and electronic shield layer 302 is configured on demand, such as light
The thickness requirement of sub- screen layer 301 shields photon photon attenuation to expected degree, the thickness requirement of electronic shield layer 302
Caused electrons decay degree expected from layer 301.In general, thickness and ray energy, the screen layer of radiation shield
Material and shielding requirements it is relevant.Ray energy is higher, then the thickness of screen layer is thicker；The atomic number of shielding material is got over
Height, density is bigger, then the thickness of screen layer is smaller；Shielding requirements are higher, then the thickness of screen layer is thicker.
Because the high-energy photon after shielding is difficult to improve shielding effect by continuing to increase the thickness of photon screen layer 301
Fruit, and its deposition fraction in electronic component is far smaller than electronics, and now energy is mainly electronically deposited on electronics
In element, therefore, radiation shield device in the present embodiment includes photon screen layer 301 and electronic shield layer 302 simultaneously, and
Photon screen layer 301 is placed in the outer layer of electronic shield layer 302, and the thickness of photon screen layer 301 can be by photon attenuation to expection
Degree, then electronic shield layer 302 continue to decay to lower energy photon and electronics, it is such setting can effectively improve electronics member
The shield effectiveness of part and the volume for reducing radiation shield device, compared with prior art in simple increase high density material thickness
More efficiently.Radiation shield device in the present embodiment adds radiotherapy while electronic component service life is improved
Security.
No matter the function of accelerating tube or treatment head, which is realized, all relies on electronic component, if the environment residing for electronic component
Electromagnetic interference also be present, and electronic component is easily influenceed by electromagnetic interference, therefore in order to reduce electromagnetic interference, implement one
In example, radiation shield device also includes electro-magnetic screen layer.
Fig. 4 embodiment provides sectional view of another radiation shield device along I-I direction.With reference to shown in figure 4, the spoke
Penetrating screening arrangement 400 includes three radiation shields, is electro-magnetic screen layer 401, photon screen layer 402 and electricity successively from outside to inside
Sub- screen layer 403, electronic shield layer 403 are internally formed receiving space 404, for housing electronic component to be shielded.
The present embodiment is roughly the same with the embodiment in Fig. 3, and difference is, the radiation shield device 400 in the present embodiment
Also include electro-magnetic screen layer 401, it is mainly made up of electromagnetic shielding material, such as polonium Mo alloys, and for being electromagnetically shielded, thickness is fitted
It is advisable in electromagnetic interference is decayed into expected degree.
The position of electro-magnetic screen layer 401 is not limited to the embodiment in Fig. 4, and it can be arranged on outermost layer, can also set
In most inner side, or be arranged between photon screen layer 402 and electronic shield layer 403, do not limited in the utility model.
Ins and outs in the present embodiment refer to Fig. 3 embodiment.
If electron content is more in ray, when directly being shielded with photon screen layer, then can produce compared with multi-photon.
In order to solve the problem, Fig. 5 embodiment provides sectional view of another radiation shield device along I-I direction.
With reference to shown in figure 5, the radiation shield device 500 includes three radiation shields, is electronics successively from outside to inside
Screen layer 501, photon screen layer 502 and electronic shield layer 503, electronic shield layer 503 are internally formed receiving space 504, are used for
House electronic component to be shielded.
Wherein, electronic shield layer 501 is made up of low density material, such as aluminium, copper, iron, graphite, for non-treatment beam
Electronic section is decayed；Photon screen layer 502 is made up of high density material, such as tungsten, lead, gold, for non-treatment beam
Decayed photon part；Electronic shield layer 503 is made up of low density material, such as aluminium, copper, iron, graphite, for absorbing low energy
Photon and the photon caused electronics in photon screen layer 502.The material of electronic shield layer 501 and electronic shield layer 503
Material be able to can also be differed with identical.
Each thickness degree of radiation shield device in the present embodiment is configured on demand, such as electronic shield layer 501
Thickness is relevant with the material of ray type (such as photon or electronics), ray energy spectrum, incident angle and electronic shield layer etc., it is desirable to
By electrons decay to expected degree；The thickness of photon screen layer 502 is suitable to photon attenuation to expected degree；Electronic shield
The thickness of layer 503 is suitable to electrons decay caused by lower energy photon and photon screen layer 502 to expected degree.
In the present embodiment, electronic shield layer 501 is set in the outside of photon screen layer 502, on the one hand, can control non-
The electronic section treated in beam is decayed, and avoids the material interaction of electronics and photon screen layer 502 from producing a large amount of photons；Separately
On the one hand, the scattering section due to photon in low density material (such as aluminium, copper, iron, graphite) will be much smaller than high density material
(such as tungsten, lead, gold), therefore the prior art that compares directly uses the way of high-density matter, the present embodiment can very great Cheng
The particle for scattering to accelerator internal layer is reduced on degree, reduces the influence to treatment beam and other devices.
Other ins and outs in the present embodiment refer to any of the above-described embodiment.
Certainly, if need not be protected in the side of electronic component, the side need not set electronic shield layer 501.Fig. 6's
Embodiment provides sectional view of another radiation shield device along I-I direction.As shown in fig. 6, radiation shield device 600 includes three
Individual radiation shield, is electronic shield layer 601, photon screen layer 602 and electronic shield layer 603 successively from outside to inside, electrical screen
Cover layer 603 and be internally formed receiving space 604, for housing electronic component to be shielded, wherein, in the side of radiation shield device
It is not provided with electronic shield layer 601.
If the environment residing for electronic component has electromagnetic interference, radiation shield device 600 can also include electromagnetic screen
Layer 605 is covered, in the present embodiment, electro-magnetic screen layer 605 is arranged on outermost layer, in other embodiments, electro-magnetic screen layer 605
Innermost layer can be arranged on, or is arranged between photon screen layer 602 and electronic shield layer 601 or 603, in the utility model
In do not limit.The ins and outs of this implementation refer to any of the above-described embodiment.
The shape of radiation shield device of the present utility model is not restricted to the described embodiments, for example, Fig. 7 is that this practicality is new
The structural representation for the radiation shield device that another embodiment of type provides.
With reference to shown in figure 7, radiation shield device 700 is platy structure, in the present embodiment by taking slab construction as an example, but not
It is limited to this, it can also be curved surface platy structure.The radiation shield device 700 includes electro-magnetic screen layer 701, electronic shield layer
702nd, photon screen layer 703 and electronic shield layer 704.Wherein, shown in the unlimited figure in the position of electro-magnetic screen layer 701, also may be used
To omit；Electronic shield layer 702 can also be selected according to the electron content in non-treatment beam, if non-treatment beam electrons
Content is higher, such as electron content then sets electronic shield layer 702 more than 20%, if electron content is less, such as electron content
No more than 20%, then electronic shield layer 702 is omitted；Electronic shield layer can also be selected according to whether reducing photon equilibrium state
Select, if it is desired, electronic shield layer 702 is then set, if need not, omit electronic shield layer 702.
Radiation shield device 700 in the present embodiment is arranged between beam and electronic component to be shielded, and to be shielded
Electronic component be located at the side of electronic shield layer 704.When linear accelerator goes out beam, radiation shield device 700 is located at non-treatment
On the path of beam, non-treatment Shu Jinhang can effectively be shielded so that electronic component is from the dry of photon, electronics and electromagnetism
Disturb, extend the service life of electronic component.
Particular technique details in the present embodiment refers to any of the above-described embodiment.
The radiation shield device that the present embodiment provides includes photon screen layer and electronic shield layer simultaneously so that radiation shield
Device has preferable radiation screening effect in the case where keeping relatively small thickness；
Further, radiation shield device includes at least two electronic shield layers, and one of electronic shield layer is arranged on
Close to the position of beam, so as to reduce the particle for scattering to accelerator internal layer, the influence to treatment beam and other devices is reduced；
Further, radiation shield device includes electro-magnetic screen layer, can be electromagnetically shielded, and reduces electromagnetic radiation to electricity
The influence of subcomponent.
Above disclosed is only several preferred embodiments of the present utility model, can not limit this reality with this certainly
With new interest field, therefore the equivalent variations made according to the utility model claims, still belong to the utility model and covered
Scope.
Claims (9)
1. a kind of radiation shield device, it is characterised in that including at least two radiation shields：
First radiation shield is photon screen layer, for carrying out photon shielding to electronic component,
Second radiation shield is electronic shield layer, for carrying out electronic shield to electronic component,
First radiation shield is arranged on the side of second radiation shield away from the electronic component.
2. radiation shield device as claimed in claim 1, it is characterised in that also including the 3rd radiation shield, the described 3rd
Radiation shield is electronic shield layer, is arranged on side of first radiation shield away from second radiation shield,
For carrying out electronic shield to the electronic component.
3. radiation shield device as claimed in claim 1 or 2, it is characterised in that also including electro-magnetic screen layer, for described
Electronic component is electromagnetically shielded.
4. radiation shield device as claimed in claim 1, it is characterised in that the radiation shield device includes being used to accommodate institute
State the receiving space of electronic component and the entrance towards the receiving space.
5. radiation shield device as claimed in claim 4, it is characterised in that the radiation shield device is also described including blocking
The cover plate of entrance.
6. radiation shield device as claimed in claim 4, it is characterised in that the radiation shield device is also included described in connection
The passage of receiving space and exterior space.
7. radiation shield device as claimed in claim 1, it is characterised in that the radiation shield device is platy structure.
8. a kind of radiotherapy system, including
Main body rack；
The side of the main body rack is fixed in treated arms and treatment head, one end of the treated arms, and the other end stretches out, institute
State the other end that treatment head is fixed on the treated arms；
Radiation shield device as described in claim any one of 1-7, for carrying out radiation shield to electronic component.
9. radiotherapy system as claimed in claim 8, it is characterised in that the radiation shield device is arranged at the treatment
In arm and/or the treatment head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621290357.9U CN206867514U (en) | 2016-11-29 | 2016-11-29 | Radiation shield device and radiotherapy system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621290357.9U CN206867514U (en) | 2016-11-29 | 2016-11-29 | Radiation shield device and radiotherapy system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206867514U true CN206867514U (en) | 2018-01-12 |
Family
ID=61325706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621290357.9U Active CN206867514U (en) | 2016-11-29 | 2016-11-29 | Radiation shield device and radiotherapy system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206867514U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI711432B (en) * | 2018-05-18 | 2020-12-01 | 中國商中硼（廈門）醫療器械有限公司 | Neutron capture therapy system and supporting table |
| CN113552402A (en) * | 2021-07-09 | 2021-10-26 | 清华大学 | Device for measuring coupling current |
| CN113546328A (en) * | 2020-04-26 | 2021-10-26 | 西安大医集团股份有限公司 | Shielding device |
-
2016
- 2016-11-29 CN CN201621290357.9U patent/CN206867514U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI711432B (en) * | 2018-05-18 | 2020-12-01 | 中國商中硼（廈門）醫療器械有限公司 | Neutron capture therapy system and supporting table |
| EP3795214A4 (en) * | 2018-05-18 | 2021-06-30 | Neuboron Therapy System Ltd. | NEUTRON TRAP THERAPY SYSTEM AND EQUIPMENT TABLE |
| US11986679B2 (en) | 2018-05-18 | 2024-05-21 | Neuboron Therapy System Ltd. | Neutron capture therapy system |
| CN113546328A (en) * | 2020-04-26 | 2021-10-26 | 西安大医集团股份有限公司 | Shielding device |
| CN113552402A (en) * | 2021-07-09 | 2021-10-26 | 清华大学 | Device for measuring coupling current |
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