CN208464996U - A kind of collimation body and treatment head - Google Patents
A kind of collimation body and treatment head Download PDFInfo
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- CN208464996U CN208464996U CN201721292382.5U CN201721292382U CN208464996U CN 208464996 U CN208464996 U CN 208464996U CN 201721292382 U CN201721292382 U CN 201721292382U CN 208464996 U CN208464996 U CN 208464996U
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Abstract
The utility model discloses a kind of collimation body and treatment heads, belong to medical instruments field.The collimation body includes: matrix, and the first collimating aperture is provided on matrix；The shield in the first collimating aperture exit is set, the second collimating aperture with the first collimating aperture coaxial communication is provided on shield；Shield is by for stopping the shielding material of beam of radiation to form, matrix is made of the material that density is less than shield.The collimation body is arranged such, on the one hand makes the weight saving of the collimation body, facilitates processing, reduces production cost, and then in treatment rack rotation process, it is easier to keep the balance and stability for the treatment of head, it is easier to adjust its relative position between radioactive source.On the other hand the Dose Characteristics of the collimation body launched field are further improved, so that launched field penumbra and leakage is penetrated reduction, avoid damage to other normal tissues, improves the therapeutic effect to target tumor.
Description
Technical field
The utility model relates to medical instruments field, in particular to a kind of collimation body and treatment head.
Background technique
It is a kind of fusion calculation machine technology, horseley-Clarke technique, electrical control skill that multi-source, which focuses stereotactic radiotherapy,
Art, surgery operating technology etc., will be multiple by using the collimation body being mounted in treatment head in the radiation therapy technology of one
The beam of radiation that radioactive source issues focuses, and concentrates on lesion, with destroyed tumor tissue.Also, it is adjustable by collimation body
Focus size etc. after field size and beam of radiation focusing, it is seen then that can collimation body play for efficiently treat tumor tissues
Important function.Therefore, collimation body is the significant components that multi-source focuses stereo directional radiative therapeutic equipment, provides a kind of collimation
Body is very necessary.
The prior art provides a kind of collimation body, and as shown in Fig. 1, which is prepared by tungsten material, thereon
Be provided with multiple groups collimating aperture group, every group include it is multiple be arranged into linear collimating aperture 1a01, and each collimating aperture 1a01 is through standard
The upper and lower end of stretched 1a.The internal diameter of multiple collimating aperture 1a01 is equal in same group, and in same group multiple collimating aperture 1a01 axis
Predeterminated position of the line below collimation body 1a focuses.The internal diameter of the collimating aperture 1a01 of difference group is unequal.In use, will collimation
Body is mounted in treatment head, and treatment head setting makes the upper end for collimating body and multiple radioactive sources in rotatably treatment rack
The beam outlet of (multiple radioactive sources are arranged into linear) fits closely.In treatment, the position of adjustment collimation body 1a makes to collimate body
Multiple collimating aperture 1a01 in upper one group of 1a are aligned with the outlet of the beam of multiple radioactive sources respectively, the beam that multiple radioactive sources issue
Multiple collimating aperture 1a01 are each passed through, and predeterminated position focuses below collimation body 1a, to treat to tumor tissues.And
And over the course for the treatment of, treatment head is with treatment gantry rotation.When needing to adjust dose of radiation, the position of adjustment collimation body 1a
It sets, exports the beam of multiple radioactive sources and be aligned with having one group of collimating aperture 1a01 for being adapted internal diameter, to change across collimation
The beam of radiation size of hole 1a01, and then adjust dose of radiation.
The existing technology has at least the following problems for designer's discovery:
In the prior art, the material for collimating body 1a is tungsten material, and density is big, and weight is big, not easy to be processed, produces this height.
Also, in treatment rack rotation process, collimation body is easy to influence the balance and stability for the treatment of head, moreover, it is quasi- to be not easy adjustment
Relative position between stretched and radioactive source.But if the material for collimating body 1a is exchanged with the light material being easily worked, just
The Dose Characteristics that collimation body launched field can be reduced, make launched field penumbra and leakage penetrate increase.
Utility model content
It being easily worked the technical problem to be solved by the embodiment of the utility model is, providing one kind, production cost is low,
It is light-weight, in treatment rack rotation process, it is easier to keep the balance and stability for the treatment of head, it is easier to adjust itself and radiation
Relative position between source, and the Dose Characteristics of collimation body launched field will not be reduced, launched field penumbra and leakage will not be made to penetrate the standard of increase
Stretched and treatment head.Specific technical solution is as follows:
In a first aspect, the utility model embodiment provides a kind of collimation body, comprising:
Matrix is provided with the first collimating aperture in described matrix；
The shield in first collimating aperture exit is set, is provided on the shield and first collimating aperture
Second collimating aperture of coaxial communication；
The shield is by for stopping the shielding material of beam of radiation to form, described matrix is less than the shielding by density
The material of body forms.
Specifically, preferably, the shield, which is located at described matrix first, collimates hole exits side, with described matrix phase
Connection.
Specifically, preferably, the shield is arranged in first collimating aperture.
Specifically, preferably, the material of described matrix is steel, aluminium or aluminium alloy.
Specifically, preferably, the material of the shield is tungsten, lead or tungsten alloy.
Specifically, preferably, the collimation body further include: Guan Yuanti；It is not set in pass source body insertion described matrix
The position for setting first collimating aperture, for stopping beam of radiation.
Specifically, preferably, the thickness of pass source body is smaller than described matrix, or the thickness phase with described matrix
Deng.
Specifically, preferably, the material of pass source body is tungsten, lead or tungsten alloy.
Specifically, preferably, being provided with the first different collimating aperture group of multiple pore sizes, Mei Ge in described matrix
One collimating aperture group includes identical first collimating aperture in multiple apertures.
Second aspect, the utility model embodiment additionally provide a kind for the treatment of head, and the treatment head includes: the collimation
Body.
Technical solution provided by the embodiment of the utility model has the benefit that
Collimation body provided by the embodiment of the utility model, by matrix the first collimating aperture exit be arranged shield,
And make to be provided with the second collimating aperture with the first collimating aperture coaxial communication on shield, also, shield is by for stopping radiation
The shielding material of beam forms, and matrix is made of the material that density is less than shield, on the one hand makes the weight saving of the collimation body,
Facilitate processing, reduces production cost, and then in treatment rack rotation process, it is easier to keep the balance and stabilization for the treatment of head
Property, it is easier to adjust its relative position between radioactive source.On the other hand the Dose Characteristics of the collimation body launched field are further improved,
So that launched field penumbra and leakage is penetrated reduction, avoid damage to other normal tissues, improves the therapeutic effect to target tumor tissue.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, the accompanying drawings in the following description is only some realities of the utility model
Example is applied, it for those of ordinary skill in the art, without creative efforts, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the top view for the collimation body that the prior art provides；
Fig. 2-1 be shield provided by the embodiment of the utility model be the first structure when, collimate the sectional view of body；
Fig. 2-2 be shield provided by the embodiment of the utility model be second of structure when, collimate the sectional view of body；
Fig. 3-1 be pass source provided by the embodiment of the utility model body be the first structure when, collimate the top view of body；
When Fig. 3-2 is that pass source provided by the embodiment of the utility model body is equal with the thickness of matrix, the sectional view of body is collimated；
When Fig. 3-3 is that the thickness of pass source provided by the embodiment of the utility model body is less than the thickness of matrix, cuing open for body is collimated
Face figure；
Fig. 4 be pass source provided by the embodiment of the utility model body be second of structure when, collimate the top view of body.
Wherein, appended drawing reference respectively indicates:
1a collimates body,
1a01 collimating aperture,
1b matrix,
The first collimating aperture of 1b01,
2 shields,
201 second collimating apertures,
3 close source body,
301 source Zi Guan bodies.
Specific embodiment
Unless otherwise defined, all technical terms used in the utility model embodiment all have and those skilled in the art
Normally understood identical meaning.Before being described in further detail to the utility model embodiment, to understanding this reality
Definition is provided with some terms of new embodiment.
In the present invention, "upper" is defined as to the position close apart from radioactive source, "lower" is defined as remote apart from radioactive source
Position.
" dose of radiation " can be understood as the energy that beam of radiation is deposited in coverage field.For example, radiation is penetrated
The intensity of beam is bigger, and in identical coverage field, dose of radiation caused by beam of radiation is bigger.The intensity of beam of radiation is got over
Small, in identical coverage field, dose of radiation caused by beam of radiation is smaller.
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
In a first aspect, the utility model embodiment provides a kind of collimation body, and as shown in attached drawing 2-1 and attached drawing 2-2, the standard
Stretched includes: matrix 1b, and the first collimating aperture 1b01 is provided on matrix 1b；The shielding in the first exit collimating aperture 1b01 is set
Body 2 is provided with the second collimating aperture 201 with the first collimating aperture 1b01 coaxial communication on shield 2.Shield 2 is by for stopping
The shielding material of beam of radiation forms, and matrix 1b is made of the material that density is less than shield 2.
It should be noted that the material of shield 2 is better than the effect of the material shields beam of radiation of matrix 1b, and can be sufficient
To stop beam of radiation, the density of matrix 1b material is less than the density of 2 material of shield.
The material of matrix 1b can be metal materials or other composite materials such as steel, aluminium, aluminium alloy.It is being based on material
Low in cost, under the premise of being easily worked, as a kind of optional mode, the material of matrix 1b is steel, aluminium or aluminium alloy.
Shield 2 is good to the screening ability of beam of radiation, and material for example can be tungsten, lead, tungsten alloy, tungstenic or lead
Composite shielding material etc..Under the premise of good based on radiation-screening beam effect, as a kind of optional mode, shield 2
Material be tungsten, lead or tungsten alloy.
Collimation body provided by the embodiment of the utility model passes through the first exit collimating aperture 1b01 setting screen on matrix 1b
Body 2 is covered, and makes to be provided with the second collimating aperture 201 with the first collimating aperture 1b01 coaxial communication on shield 2, also, shield 2
By for stopping the shielding material of beam of radiation to form, matrix 1b is made of the material that density is less than shield 2, on the one hand make this
The weight saving for collimating body facilitates processing, reduces production cost, and then in treatment rack rotation process, avoids influencing to treat
The balance and stability of head facilitate the relative position for adjusting itself and radioactive source.On the other hand it also enhances to by the second collimating aperture
The screening ability of 201 beam of radiation projected, improves the Dose Characteristics of the collimation body, so that launched field penumbra and leakage is penetrated reduction, keep away
Exempt to damage other normal tissues, improves the therapeutic effect to target tumor tissue.
Shield 2 can be located at matrix 1b the first collimating aperture 1b01 and export side, and be connected with matrix 1b.
Matrix 1b can be set to various structures, such as matrix 1b can be square block structure, arc body or column shape
Structure or other structures, the utility model embodiment are not especially limited the structure of matrix 1b, can be with treatment head phase
Adaptation.
Shield 2 can be set to various structures, for example, shield 2 can in blocks, arc body, it is columnar structured,
Or other structures, the utility model embodiment are not especially limited the structure of shield 2, can be adapted i.e. with matrix 1b
It can.
As the first example, as shown in attached drawing 2-1, when matrix 1b is rectangular block structure, shield 2 is square block
Body structure is located at matrix 1b the first collimating aperture 1b01 and exports side, and is connected with matrix 1b, it may be assumed that shield 2 is located at matrix
Below 1b, end face is connect with the lower end surface of matrix 1b thereon.
Illustratively, when matrix 1b is arc body structure, shield 2 is arc body structure, and it is quasi- to be located at matrix 1b first
Straight hole 1b01 exports side, and is connected with matrix 1b, it may be assumed that shield 2 is located on the inside of matrix 1b, and outer surface is with matrix 1b's
Inner surface connection.
Illustratively, when matrix 1b is column structure, shield 2 is tubular structure, is located at the first collimating aperture of matrix 1b
1b01 exports side, and is connected with matrix 1b, it may be assumed that shield 2 is located on the outside of matrix 1b, the appearance of inner surface and matrix 1b
Face connection.
In use, beam of radiation sequentially passes through the first collimating aperture 1b01 on matrix 1b, the second collimation on shield 2
Hole 201 makes the beam of radiation being pierced by by the second collimating aperture 201 in the wild reduction of launched field half of focal point, avoids to other normal group
Damage is weaved into, and optimizes radioactive source dose distribution, improves the therapeutic effect to tumour.
There are many connection types between matrix 1b and shield 2, for example, the two can by insertion, clamping or
The mode of person's mechanical connection connects, and can also obtain collimation provided by the embodiment of the utility model by integrally formed mode
Body.
When matrix 1b and shield 2 are clamped, multiple clamping grooves are provided on the face that connect on matrix 1b with shield 2,
On shield 2 with multiple locking members compatible with clamping groove are provided on the face that matrix 1b is connect on end face, by locking member with
Clamping groove clamping, to realize that matrix 1b and shield 2 are clamped.Locking member can be set to arc body, square body or other not
Regular texture, clamping groove are structure compatible with locking member.
In order to avoid gap leakage of the beam of radiation between matrix 1b and shield 2, as a kind of optional mode, base
It is integrally formed between body 1b and shield 2.
Shield 2 also can be set in the first collimating aperture 1b01.
As second of example, as shown in attached drawing 2-2, shield 2 is annular solid, is arranged in the first collimating aperture 1b01.
I.e. shield 2 is multiple independent annular solids, is separately positioned at each first collimating aperture 1b01 inner outlet, and every
Through-hole (that is: the second collimating aperture 201) and the first corresponding collimating aperture 1b01 coaxial communication on a ring shielding body 2.So
Shield 2 is set, material used in shield 2 can be saved, mitigates the weight of collimation body provided by the embodiment of the utility model.
In use, beam of radiation sequentially passes through the first collimating aperture 1b01 on matrix 1b, is arranged in the first collimating aperture
The second collimating aperture 201 on shield 2 at 1b01 inner outlet, makes the beam of radiation being pierced by by the second collimating aperture 201 in focus
The radiation at place wild half is wild to be reduced, and is avoided causing to damage to other normal tissues, and optimize radioactive source dose distribution, be changed
It has been apt to the therapeutic effect to tumour.
In this example, the outlet of the second collimating aperture 201 can be flushed with the outlet of the first collimating aperture 1b01 (referring to attached drawing
2-2), i.e., the lower end of shield 2 is flushed with the lower end of matrix 1b.
In this example, the outer profile of shield 2 can be set to various structures, meet the second collimation on shield 2
Hole 201 and the first collimating aperture 1b01 coaxial communication.For example, the outer profile of shield 2 can be square body, cylinder
Body, hexagon cylinder etc. meet the inner wall seamless connection or interference fit of the side wall and the first collimating aperture 1b01 of shield 2
?.In this example, the body in a ring of shield 2, is not especially limited the outer profile of shield 2.
Shield 2 can be arranged in several ways in the first collimating aperture 1b01, for example, shield 2 and matrix
1b is integrally formed in the perhaps wall of first collimating aperture 1b01 of the insertion of shield 2 or the inner wall card with the first collimating aperture 1b01
It connects.
When using collimation body provided by the embodiment of the utility model, be installed in treatment head to tumor tissues into
For row treatment, multiple first that the multi beam beam of radiation of multiple radioactive sources transmitting in treatment head is each passed through on matrix 1b are quasi-
After multiple second collimating apertures 201 on straight hole 1b01 and shield 2, focus at target tumor tissue, to treat tumor group
It knits.When stopping treatment, beam of radiation is shielded.
When stopping treatment, it can use the part of not set first collimating aperture 1b01 and multiple radioactive sources pair on matrix 1b
Together, to shield multi beam beam of radiation.
In order to enhance the part of not set first collimating aperture 1b01 on matrix 1b to the shield effectiveness of beam of radiation, such as attached drawing
Shown in 3-1, collimation body provided by the embodiment of the utility model further include: close source body 3；Pass source body 3 is embedded in not set on matrix 1b
The position of first collimating aperture 1b01, for stopping beam of radiation.
It should be noted that matrix 1b includes the position for being provided with the first collimating aperture 1b01 and not set first collimation
The position of hole 1b01.By taking the upper surface (one end i.e. close apart from radioactive source) of matrix 1b as an example, closing source body 3 can be by matrix 1b
End face is not provided with the position insertion matrix 1b of the first collimating aperture 1b01, and need to guarantee that pass source body 3 does not influence the first collimating aperture
The use of 1b01.
When stopping treatment, the position of matrix 1b is adjusted, so that multiple radioactive sources are aligned with source body 3 is closed, with radiation-screening
Beam.
Pass source body 3 can be set to various structures, based on be easy setting, facilitate shielding ray under the premise of, provide with
Lower two kinds of examples:
As the first example, as shown in attached drawing 3-1, pass source body 3 is blocks, is embedded in by the middle part of the upper surface matrix 1b
Matrix 1b.At this point, the first collimating aperture 1b01 is located at the two sides position of matrix 1b.
When stopping treatment, mobile matrix 1b is aligned pass source body 3 with the outlet of the beam of multiple radioactive sources, and then shields
Ray.
Above-mentioned pass source body 3 is integral, be easy setting, adjustment collimate body position when, can make pass source body 3 quickly with it is more
The beam of a radioactive source exports alignment, and then stops beam of radiation.
In this example, closing source body 3 can be set to a variety of blocky shapes, for example, rectangular blocks, trapezoidal blocks,
Column etc. meets the beam of radiation that can stop multiple radioactive source radiation simultaneously, and the structure for closing source body 3 is not made to have
Body limits.
As second of example, as shown in Fig. 4, one or more first collimating aperture groups can be set on matrix 1b, often
It include multiple first collimating aperture 1b01 in a first collimating aperture group, closing source body 3 includes: at least one set of source Zi Guan body group；And it is any
First collimating aperture 1b01 in the number and arrangement mode and any first collimating aperture group of the source Zi Guan body 301 in the body group of the source Zi Guan
Number and arrangement mode correspond to identical.
That is, the number of the source Zi Guan body group is at least one set, the every group of source Zi Guan body group includes multiple sources Zi Guan body 301, each
The number of multiple sources Zi Guan body 301 and arrangement mode are all the same in the body group of the source Zi Guan.And every height closes multiple sub- passes in source body group
The number of multiple first collimating aperture 1b01 and arrangement side in the number and arrangement mode of source body 301, with any first collimating aperture group
Formula corresponds to identical.
When stop treatment when, adjust matrix 1b so that multiple radioactive sources beam outlet respectively with multiple sources Zi Guan body 301
Alignment, and then beam of radiation is shielded.
The arrangement mode of multiple first collimating aperture 1b01 is identical as the arrangement mode of multiple radioactive sources in first collimating aperture group,
In order to which beam of radiation passes through multiple first collimating aperture 1b01, and by the arrangement side of multiple sources Zi Guan body 301 in the body group of the source Zi Guan
Formula is set as identical as the arrangement mode of multiple first collimating aperture 1b01 in any first collimating aperture group, in order to the source Zi Guan body
The beam outlet of multiple sources Zi Guan body 301 and multiple radioactive sources is aligned in group, and then by alpha ray shield.
Pass source body 3 is arranged such, it is possible to reduce close the usage amount of 3 material of source body, reduce cost of material.
Specifically, the group number of the source Zi Guan body group can be more than the group number of the first collimating aperture group or few, can also be equal.
The group number that group closes source body group is equal with the group number of the first collimating aperture group or fewer than the group number of the first collimating aperture group
When, two adjacent the first collimating aperture groups can be arranged in at least one set of source Zi Guan body group along the arragement direction of the first collimating aperture group
Between.Every height in at least one set of source Zi Guan body group can also be made to close source body group to be arranged in any first collimating aperture group, and
Make multiple sources Zi Guan body 301 in the every group of source Zi Guan body group and multiple first collimating aperture 1b01 in corresponding first collimating aperture group
It is arranged alternately.
For the ease of setting, and procedure of processing is reduced, production cost is reduced, as a kind of optional mode, such as 4 institute of attached drawing
Show, closing source body 3 includes the one group of source Zi Guan body group；Multiple sources Zi Guan body 301 replaces with the first collimating aperture 1b01 multiple in any group
Setting.
The structure of the source Zi Guan body 301 can be set to it is a variety of, for example, rectangular block structure, round block structure, triangle
Block structure or other rules and irregular block structure, are not specifically limited herein, can shield, block radiation
The beam in source exports.
In above-mentioned two example, the thickness for closing source body 3 can be smaller than the thickness of matrix 1b, referring to attached drawing 3-3, Huo Zheyu
The thickness of matrix 1b is equal, referring to attached drawing 3-2.
The thickness of pass source body 3 is bigger, and the effect of radiation-screening beam is better.
For pass source body 3 by being enough to stop the material of beam of radiation to form, the effect of radiation-screening beam is better than matrix 1b.It closes
Source body 3 can be made by a variety of shielding materials, such as can be the composite shielding material of tungsten, lead, tungsten alloy, tungstenic or lead
Deng.Under the premise of good based on radiation-screening beam effect, the material for closing source body 3 is tungsten, lead or tungsten alloy.
In the utility model embodiment, one group of first collimating aperture group can be set on matrix 1b, multiple groups also can be set
First collimating aperture group.When being treated to different tumor tissues, for the ease of adjusting dose of radiation, efficiently to kill tumour
While cell, other normal tissues are protected, the first different collimating aperture group of multiple pore sizes are provided on matrix 1b, each
First collimating aperture group includes the identical first collimating aperture 1b01 in multiple apertures.
When adjusting dose of radiation, the quantitative internal diameter of first collimating aperture 1b01 compatible with dose of radiation is determined, and will
One group of first collimating aperture group with quantitative internal diameter is aligned with the outlet of the beam of multiple radioactive sources, in order to using suitable radiation
Dosage treats tumor tissues.
Specifically, every group of first collimating aperture group includes multiple first collimating aperture 1b01, multiple first collimating apertures in every group
The axis of 1b01 predeterminated position below matrix 1b focuses, convenient for making to be each passed through multiple first collimating aperture 1b01 in same group
Along axis direction, the predeterminated position below matrix 1b focuses multi beam beam of radiation.
The internal diameter of first collimating aperture 1b01 of difference group is different, selects different groups of the first collimating aperture 1b01 for making to radiate
Beam passes through, and focuses, the available radiation focus point wild with different dose of radiations, radiation, and then to different tumor groups
It knits and is treated.
Multiple first collimating aperture 1b01 arrange in the same manner in different groups, in order to match with multiple radioactive sources, often
The arrangement mode of the first collimating aperture 1b01 of group is identical as the arrangement mode of multiple radioactive sources.
Second aspect, the utility model embodiment additionally provide a kind for the treatment of head, which includes: above-mentioned collimation body.
Due to the light weight for the collimation body installed in the treatment head, and there is excellent field size dosage characteristic, launched field penumbra
Penetrated with leakage small, this facilitates the relative position of adjustment collimation body and treatment head, and when treatment head is mobile or rotation, can make to control
Head is treated to keep balance and stablize.
The treatment head can be applied in plurality of devices, and as a kind of optional mode, the treatment head is poly- applied to multi-source
In burnt stereotactic radiotherapy.Wherein, treatment head is mounted in treatment rack.Below for using the treatment head to tumour
Tissue carries out treatment and gives a detailed description:
When treating tumor tissues, the relative position of multiple radioactive sources in adjustment collimation body and treatment head makes to collimate on body
Multiple first collimating aperture 1b01 are aligned with the outlet of the beam of multiple radioactive sources in one collimating aperture group, and multiple exposure beams pass through multiple first
After collimating aperture 1b01, the predeterminated position below collimation body is focused, to treat to target tumor tissue.
When adjusting dose of radiation, the first collimating aperture group for being adapted to dose of radiation is determined, and by the first collimating aperture group
In the beam outlets of multiple first collimating aperture 1b01 and multiple radioactive sources be aligned.
When stopping treatment, makes to collimate the pass source body 3 on body and be aligned with the outlet of the beam of multiple radioactive sources, penetrated with shielding
Line.
The above is only the preferred embodiment of the present invention, the protection scope being not intended to limit the utility model,
Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should be included in this reality
Within novel protection scope.
Claims (10)
1. a kind of collimation body characterized by comprising
Matrix (1b) is provided with the first collimating aperture (1b01) in described matrix (1b)；
Shield (2) in the first collimating aperture (1b01) exit is set, is provided on the shield (2) and described
Second collimating aperture (201) of one collimating aperture (1b01) coaxial communication；
The shield (2) is by for stopping the shielding material of beam of radiation to form, described matrix (1b) is less than described by density
The material of shield (2) forms.
2. collimation body according to claim 1, which is characterized in that the shield (2) is located at described matrix (1b) first
Collimating aperture (1b01) exports side, is connected with described matrix (1b).
3. collimation body according to claim 1, which is characterized in that the shield (2) is arranged in first collimating aperture
In (1b01).
4. collimation body according to claim 1, which is characterized in that the material of described matrix (1b) is that steel, aluminium or aluminium close
Gold.
5. collimation body according to claim 1, which is characterized in that the material of the shield (2) is tungsten, lead or tungsten
Alloy.
6. collimation body according to claim 1, which is characterized in that the collimation body further include: Guan Yuanti (3)；The pass
Source body (3) is embedded in the position of not set first collimating aperture (1b01) on described matrix (1b), for stopping beam of radiation.
7. collimation body according to claim 6, which is characterized in that the thickness of pass source body (3) is than described matrix (1b)
It is small or equal with the thickness of described matrix (1b).
8. collimation body according to claim 6, which is characterized in that the material of pass source body (3) is tungsten, lead or tungsten
Alloy.
9. collimation body according to claim 1, which is characterized in that be provided with multiple pore sizes not in described matrix (1b)
The first same collimating aperture group, each first collimating aperture group includes identical first collimating aperture (1b01) in multiple apertures.
10. a kind for the treatment of head, which is characterized in that the treatment head includes: the described in any item collimation bodies of claim 1-9.
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| CN107485801A (en) * | 2017-10-09 | 2017-12-19 | 深圳市奥沃医学新技发展有限公司 | One kind collimation body and treatment head |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107485801A (en) * | 2017-10-09 | 2017-12-19 | 深圳市奥沃医学新技发展有限公司 | One kind collimation body and treatment head |
| CN107485801B (en) * | 2017-10-09 | 2021-04-23 | 深圳市奥沃医学新技术发展有限公司 | Collimation body and treatment head |
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