CN103353602B - Multifunctional measuring die body - Google Patents
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- CN103353602B CN103353602B CN201310306668.4A CN201310306668A CN103353602B CN 103353602 B CN103353602 B CN 103353602B CN 201310306668 A CN201310306668 A CN 201310306668A CN 103353602 B CN103353602 B CN 103353602B
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Abstract
The invention discloses a kind of multifunctional measuring die body, including cope plate, upper ionisation chamber measurement plate, Multichannel detection device plate, lung measurement plate, polylith standard buildup measurement plate, polylith film measurement plate, lower ionisation chamber measurement plate and the lower template vertically stacked gradually, wherein, at least one diagonal of above layers template is provided with positioning hole, the quantity at least two of positioning hole, the multifunctional measuring die body also includes the more locating bars for being used to insert positioning hole, by the way that locating bar is inserted into positioning hole, it is fixed and is integrally formed.When being measured using the multifunctional measuring die body, the templating species used and quantity can be adjusted as needed.Multifunctional measuring die body provided by the invention, it can be not only used for the two-dimentional film dosimetry checking of individual layer, it can also be used to the three-dimensional film dosimetry checking of multilayer, it may also be used for the routine quality such as light field and launched field uniformity, flatness, symmetry of accelerator ensures work.
Description
Technical field
The present invention relates to a kind of multifunctional measuring die body, more particularly to one kind to be used for conventional radiation therapy, three-dimensional conformal agent
Amount checking, the multifunctional measuring die body for inversely adjusting strong dosage verifying etc., belong to Medical Instruments technical field.
Background technology
Radiotherapy, chemotherapy and surgical operation are to treat three big technological means of tumour.With computer technology and
There is huge change in the rapid development of iconography, radiotherapy, and the two-dimentional typical radiation before the 1970s is controlled
Treat, the 3 dimensional conformal radiation therapy of the 1980s(3dimensional conformal radiation therapy, letter
Claim 3D-CRT), to the strength regulated shape-adapted radiation therapeutic risen in recent years(intensity modulated radiation
Therapy, abbreviation IMRT), the epoch that radiotherapy controls the distribution of extensive, dosage fuzzy from dosage enter precise radiotherapy
Epoch.The radiation field of radiotherapy is developed from equal strength to intensity adjustable, dose gradient change increase in irradiation field.
3 dimensional conformal radiation therapy can be realized highly conformable on three-dimensional, and one is brought for the radiotherapy of tumour
Secondary change.It has high dose, isodose face, shape is consistent on three dimensions, edge dose gradient in target area is big with target area
The characteristics of, four big principles of radiotherapy can be followed well:Target dose is accurate;Neighbouring normal organ radioactive dose is small;
Protect critical organ;Target dose is evenly distributed.But because its Therapeutic mode is complicated, there is high gradient, the dosage of high temporal
Feature, Normal Tissue Complication probability may be triggered to rise, or even dosage damage malpractice occur.
In order to ensure radiotherapy quality, protection vital organs, treatment code requirement must be carried out before radiation treatment
When dosage verifying, only actual dose intensity distribution are less than 3% or so with plan intensity distribution error, just allow to implement to irradiate.
In the prior art, the dosage verifying instrument used mainly has:Various ionisation chamber matrix, semiconductor matrix and films.It is however, existing
The needs for having dosage verifying instrument only to meet two-dimension plane dose checking substantially, for 3 dimensional conformal radiation therapy, are especially adjusted
Strong conformal radiation therapy also lacks accurate and effective, easily and efficiently verifies means.
In order to obtain accurate dosage verifying result, people are improved to dosage verifying instrument always.For example, patent
Number for ZL201120234218.5 Chinese utility model in disclose for radiotherapy absorbed dose of radiation measure and verify consolidate
Body body mould and can.Wherein, solid phantom include interior empty framework, lamina mould inserted sheet, strip shape body mould inserted sheet, for placing
The column mould inserted sheet of ionisation chamber;One of side of framework is the opening surface for inserting various inserted sheets, and remaining side is equal
For closing;Lamina mould inserted sheet is identical with framework inner bottom surface size, and each lamina mould inserted sheet is stacked in along the short transverse of framework
In framework;The length of strip shape body mould inserted sheet is identical with the length of lamina mould inserted sheet, and each strip shape body mould inserted sheet is inserted along lamina mould
The width of piece is stacked between two of which lamina mould inserted sheet;Column mould plugging sheet clamp insert in strip shape body mould inserted sheet it
Between.Above-mentioned solid phantom is positioned over the position of various body mould inserted sheets inside framework by adjustment, simulated human tissue organ, from
And realize the dosage verifying of radiotherapy.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of multifunctional measuring die body.Utilize the multifunctional measuring mould
Body can realize the quality assurance and dosage control to radiotherapy.
In order to reach above-mentioned goal of the invention, the present invention uses following technical schemes:
A kind of multifunctional measuring die body, including vertically stack gradually cope plate, upper ionisation chamber measurement plate, multiple tracks
Detector panel, lung measurement plate, polylith standard buildup measurement plate, polylith film measurement plate, lower ionisation chamber measurement plate and lower template, its
In, at least one diagonal of each layer template is provided with positioning hole, the quantity at least two of positioning hole;The multifunctional measuring
Die body also includes the more locating bars for being used to insert the positioning hole, will be each by the way that the locating bar is inserted into the positioning hole
Layer template is integrally fixed.
Wherein more preferably, at least two inclines are apery build arc-shaped edges in the upper surface of the cope plate;Under described
At least two inclines are apery build arc-shaped edges in the lower surface of template.
Wherein more preferably, the X-axis center line, Y-axis center line and scale of right-angled intersection are carved with the upper surface of the cope plate
Center mark line is carved with line, four sides of each layer template respectively.
Wherein more preferably, the upper ionisation chamber measurement plate is identical with the structure of the lower ionisation chamber measurement plate, its upper surface
X-axis center line, Y-axis center line and graduation mark are respectively equipped with, three circular holes are respectively equipped with its front, to the left face or the right side
A circular hole is respectively equipped with one of side in side, the circular hole is used to insert the ionisation chamber shield for carrying ionisation chamber
Cover or for inserting the plunger as tissue compensating material.
Wherein more preferably, the upper surface of the Multichannel detection device plate is provided with multiple for inserting partly leading for semiconductor detector
Bulk detector groove, also, Y-axis center line and graduation mark are carved with the upper surface of the Multichannel detection device plate.
Wherein more preferably, the positive centre position of the lung measurement plate is provided with a circular hole, and the circular hole is used to insert
Carry the ionisation chamber sheath of ionisation chamber, bone tissue shim rod and as one kind in the plunger of tissue compensating material;It is described
It is symmetrical with Human Lung shape identical groove, the groove that the upper surface of lung measurement plate is provided with Y-axis center line, graduation mark and two
Ground is distributed in the both sides of Y-axis center line, and the groove is used to be embedded in lung tissue compensation block.
Wherein more preferably, the standard buildup measurement plate has two kinds of different specifications of thickness, also, described multi-functional
Measure in die body, the quantity of the standard buildup measurement plate of every kind of specification can be in any combination.
Wherein more preferably, two kinds of thickness of the standard buildup measurement plate are respectively 10mm and 5mm.
Wherein more preferably, the front of the film measurement plate is provided with the groove for being used for placing medical science film, the groove
Shape, size are identical with shape, the size of medical science film;The back side of the film measurement plate, which is provided with, to be used to compress medical science film
Boss, the big I of the boss are incorporated in the groove of lower floor's film measurement plate.
Wherein more preferably, the quantity of the film measurement plate is at least 6 pieces, and different numbers are provided with every piece of film measurement plate
The number of plies positioning film mark hole of amount.
Multifunctional measuring die body provided by the invention can be not only used for the two-dimentional film dosimetry checking of individual layer, it can also be used to multilayer
Three-dimensional film dosimetry checking, it may also be used for the routine quality such as light field and launched field uniformity, flatness, symmetry of accelerator guarantor
Demonstrate,prove work.Multifunctional measuring die body provided by the invention, profile are ellipse humanoid engineering die body, close to human body, when penetrating
When line tilts or rotates irradiation, profile is not mutated, and can reduce image artifacts and lateral electronics caused by die body sharp edges
Imbalance problem.The multifunctional measuring die body is made of lucite or solid Water ball block, has good vision saturating
Bright property, operating personnel are it will be clear that the position of film, ionisation chamber, semiconductor detector in die body.In die body upper table
High-precision wide 1mm center mark line is carved with face and 4 sides, and operating personnel can be quickly accomplished pendulum position, positioning, bat
The work such as piece, measurement, carry out three-dimensional simulation scanning.In addition, the multifunctional measuring die body is also equipped with polylith 5mm, 10mm thickness
Standard buildup measurement plate, by neatly combining the template of difference in functionality, different-thickness, it can reach to different depth, difference
The dosage distribution purpose that measures and verify at position, suitable for conventional radiation therapy, 3 dimensional conformal radiation therapy and inversely
The quality assurance of IMRT and dosage control.
Brief description of the drawings
Fig. 1 is the overall structure diagram of multifunctional measuring die body provided by the present invention;
Fig. 2 is the decomposition texture schematic diagram of multifunctional measuring die body shown in Fig. 1.
Embodiment
Technical scheme is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in figure 1, multifunctional measuring die body 1 provided by the present invention has the template of difference in functionality along vertically by multilayer
Direction, which stacks gradually, to be formed.In the multifunctional measuring die body, opened at least one cornerwise same position of each layer template
Provided with least two positioning holes 20.The multifunctional measuring die body also includes more and is used to insert the positioning that positioning hole 20 realizes positioning
Rod 21, by the way that locating bar 21 is inserted in the positioning hole 20 of each layer template, an entirety is become, forms multifunctional measuring mould
Body 1.In use, the type and quantity of multilayer template can be adjusted as needed.
Understood with reference to Fig. 1 and Fig. 2, in the present embodiment, multifunctional measuring die body 1 includes cope plate 2, upper ionisation chamber measures
Plate 3, Multichannel detection device plate 4, lung measurement plate 5, standard buildup measurement plate 6 and 7, film measurement plate 8, lower ionisation chamber measurement plate 11,
Lower template 12.Above layers template vertically stacks gradually, and every layer of measurement plate diagonal is provided with positioning hole 20 and 20-1,
Inserted respectively in each layer positioning hole 20 or 20-1 with two locating bars 21, its fixation is turned into an entirety, form multi-functional
Measure die body.
As a complete unit, the multifunctional measuring die body is made by transparent lucite or solid Water ball block, is had
Good visual clarity, operating personnel are it will be clear that in the interior film placed of film groove 10, ionisation chamber sheath 14
Ionisation chamber, the plunger 15 of placement, the semiconductor detector in semiconductor probe tank 18 are relative in multifunctional measuring die body
Position.The profile of the multifunctional measuring die body for ellipse apery three-dimensional-structure, at least two of the upper surface of its cope plate 2
Incline is apery build arc-shaped edges, and at least two inclines of the lower surface of lower template 12 are apery build arc-shaped edges, so as to when penetrating
When line tilts or rotates irradiation, profile is not mutated, and can reduce image artifacts and lateral electronics caused by die body sharp edges
Imbalance problem.For the ease of completing the work such as pendulum position, positioning, film making, measurement, the cope plate 2 of the multifunctional measuring die body
The X-axis center line, Y-axis center line and graduation mark of right-angled intersection are also carved with upper surface, each layer template of multifunctional measuring die body
Center mark line 13,13-1 are carved with respectively in four sides.
Each layer template for forming the multifunctional measuring die body is said respectively referring to the order in Fig. 2 from top to bottom
It is bright.Due to being equipped with positioning hole in each layer template in the multifunctional measuring die body, in being provided with the side of each layer template
Heart markings, in the introduction of following each layer templates, save each layer template-setup positioning hole and each layer formwork sides set center
The introduction of markings.
The first layer template for forming multifunctional measuring die body 1 is cope plate 2, and X-axis center line, Y-axis are carved with its upper surface
Center line and graduation mark, the left and right incline of its upper surface is apery build arc-shaped edges, and the forward and backward incline of its upper surface can also
It is apery build arc-shaped edges.
Second layer template is upper ionisation chamber measurement plate 3, and X-axis center line, Y-axis center line and scale are carved with its upper surface
Line, four circular hole 19-2 are shared in its front and left surface, wherein, there are three circular hole 19-2 to be opened on front, there is a circle
Hole 19-2 is opened on left surface, and the diameter of four circular holes is identical, and four circular holes are respectively for insertion into the electricity for carrying ionisation chamber
From the plunger 15-1 of room sheath 14-1 or insertion as tissue compensation packing material.Ionisation chamber sheath 14-1 insertion circular holes 19-2
In measurable dose point, it is not necessary to when measuring dose point, insertion plunger 15-1 carry out tissue compensation, it is hereby achieved that more smart
True dose measurement.In this embodiment, ionisation chamber sheath 14-1 is inserted in the circular hole 19-2 of front, plunger 15-1 insertions
In the circular hole 19-2 of side.In addition, circular hole 19-2 position can also be opened up overleaf or on right flank.
Third layer template is Multichannel detection device plate 4, and Y-axis center line and graduation mark are carved with the upper surface of Multichannel detection device plate 4,
Also, multiple semiconductor probe tanks 18 for being used to insert semiconductor detector are provided with the upper surface of Multichannel detection device plate 4.
In the embodiment, the upper surface of Multichannel detection device plate 4 is provided with nine channel semiconductor detector slots 18, may be inserted into 1 during use
~9 semiconductor detectors, for measuring the dosage of 1~9 point data.
4th layer of template is lung measurement plate 5, and the positive centre position of lung measurement plate 5 is provided with a circular hole 19-1, circular hole
The ionisation chamber sheath 14 for carrying ionisation chamber, bone tissue shim rod 16 are can be inserted into 19-1 and as tissue compensation packing material
Plunger 15 in any one.Wherein, insert bone tissue shim rod 16 and carry out bone tissue compensation, insert band ionisation chamber sheath 14
Ionisation chamber measurement dose point, insertion plunger 15 carry out tissue compensation.In addition, the upper surface of lung measurement plate 5 is provided with Y-axis center line
And graduation mark, in lung measurement plate upper surface the both sides of Y-axis center line be additionally provided with two it is symmetrically arranged identical with Human Lung shape
Groove, for placing lung tissue compensation block 17.By the way that bone tissue shim rod 16 is inserted into circular hole 19-2, by lung tissue compensation block
In the groove of the upper surface of 17 insertion lung measurement plate 5, it is possible to achieve bone, the compensation correction of lung tissue in film dosimetry field.
Layer 5 template is polylith standard buildup measurement plate.Pass through varying number, the standard buildup measurement plate of different size
Combination carry out dosage measurement depth adjustment.In order to construct it is different fathom, can select two kinds of specifications standard build up
Measurement plate:Standard buildup measurement plate a and standard buildup measurement plate b.Standard buildup measurement plate a and standard buildup measurement plate b have
Different thickness.In this embodiment, standard buildup measurement plate a(Referring to the standard buildup measurement plate 6 in Fig. 2)Thickness be
10mm, standard buildup measurement plate b(Referring to the standard buildup measurement plate 7 in Fig. 2)Thickness be 5mm.According to dosage measurement depth
Needs, from the thick standard buildup measurement plate b of standard buildup measurement plate a thick 3 10mm and 2 5mm, carry out dosage measurement
Buildup depth is adjusted.Certainly, in actual use, according to measurement the standard buildup measurement plate from other thickness can also be needed to enter
Row combination.
Layer 6 template is polylith film measurement plate 8.More preferably, at least 6 layers of glue can be set according to measurement needs, the layer
Piece measurement plate 8, for accommodating at least 5 medical science films(It is not shown).The front of film measurement plate 8, which is provided with, to be used to place medical science glue
The groove 10 of piece, shape, the size of groove 10 are identical with shape, the size of medical science film;The back side of film measurement plate 8 with it is recessed
The relative position of groove 10 is provided with the boss 9 for compressing medical science film, and the big I of boss 9 incorporates lower floor's film measurement plate
In groove 10.In addition, by setting the number of plies of varying number to position film mark hole, Ke Yishi in every piece of film measurement plate 8
The number of plies positioning of existing medical science film.By the way that multilayer two-dimension film dosimetry data can be obtained into three by corresponding software processing
Tie up dosage field analysis result.Wherein, the groove 10 and boss 9 set respectively in the front and back of film measurement plate 8 can press
Closely pressing close to for tight film, guarantee medical science film and die body, occurs without and is enough the air gap for causing measurement error.
Layer 7 template is lower ionisation chamber measurement plate 11, structure and the upper ionisation chamber measurement plate 3 of lower ionisation chamber measurement plate 11
Structure it is identical.X-axis center line, Y-axis center line and graduation mark are carved with its upper surface, four are shared in its front and left surface
Circular hole 19, wherein, there are three circular holes 19 to be opened on front, there is a circular hole 19 to be opened on left surface, four circular holes it is straight
Footpath is identical, and four circular holes are respectively for insertion into the ionisation chamber sheath 14 for carrying ionisation chamber or insertion is used as tissue compensating material
Plunger 15.
8th layer of template(Orlop template)It is lower template 12, the structure of lower template 12 is identical with the structure of cope plate 2, its
The left and right incline of lower surface is apery build arc-shaped edges respectively, and the forward and backward incline of its lower surface can also be apery build circular arc
Side.
Each layer template that the multifunctional measuring die body is related to is described respectively above.With reference to its concrete structure
Function achieved by multifunctional measuring die body is illustrated.
The multifunctional measuring die body is provided with multilayer template, and positioning hole is opened up in each layer template, will by using locating bar
Each layer template wears integral composition multifunctional measuring die body.In each measurement, the mould needed to use can be adjusted as needed
Plate type and quantity, so as to realize the different dosage measurements to fathom and checking.
The multifunctional measuring die body possesses the external form of ergonomic shape close to human body, when ray tilts or rotates photograph
When penetrating, profile is not mutated, and can reduce image artifacts and lateral electronics imbalance problem caused by die body sharp edges.
Multifunctional measuring die body is made from transparent materials such as lucite/solid water transparent materials, has good regard
Feel the transparency, operating personnel are it will be clear that the interior electricity placed of film, ionisation chamber sheath 14 placed in film groove 10
From room, plunger 15, relative position of the semiconductor detector in multifunctional measuring die body in semiconductor probe tank 18.Together
When, the center that high-precision wide 1mm is carved with 4 sides in the upper surface of the cope plate 2 of multifunctional measuring die body 1 and each template is marked
Will line 13 so that operating personnel can be quickly accomplished the work such as pendulum position, positioning, film making, measurement.
The multifunctional measuring die body includes multifilm measurement plate, is used to place film between adjacent two layers film measurement plate.
Every layer of film measurement plate is provided with the film mark hole of varying number, for number of plies position where automatic identification film.Film is surveyed
The front setting of template is fluted, for placing the medical science film to patient treatment dose checking, the back side of film measurement plate
Boss is provided with, for compressing the medical science film being put into lower floor's film measurement plate groove, so as to ensure every piece of medical science film all
Good contact.Using the multifunctional measuring template, multiple flushing-free films quickly and easily once can be layered accuracy registration,
Reduction develops photographic film caused by with sheet registration uncertain, reduces operating personnel's workload.
In actual use, the ionisation chamber of different model can be selected(Such as:The ionization of 0.6cc and 0.125cc sizes
Room)Measure, be inserted into ionisation chamber sheath first, then ionisation chamber sheath is inserted in corresponding circular hole.When need not
When measuring dose point, tissue compensation is carried out using in the plunger insertion circular hole that packing material is compensated as tissue.Meanwhile in more work(
It can measure in die body, be also provided with the groove for being embedded in lung tissue compensation block and the circular hole for inserting bone tissue shim rod,
So that in measurement process, correction can be compensated to bone, lung tissue in film dosimetry field.
In summary, the multifunctional measuring die body realizes the quick of multifilm in dosage measurement and verification process
Positioning with it is registering;The calibration of film relative dosage and ionisation chamber, detector absolute dosages;Film and die body air-gap-free are closely sealed;It is more
Layer die body is accurately positioned;Bone, the compensation correction of lung tissue in film dosimetry field;Die body edge artifact is repaiied in stereo rotating irradiation
Just etc..So the multifunctional measuring die body cannot be only used for the two-dimentional film dosimetry checking of individual layer, it can also be used to the three-dimensional of multilayer
Film dosimetry is verified, it may also be used for the routine quality such as light field and launched field uniformity, flatness, symmetry of accelerator ensures work
Make.
Multifunctional measuring die body provided by the present invention is described in detail above.To the general technology of this area
For personnel, to any obvious change that it is done on the premise of without departing substantially from true spirit, it will all form
To infringement of patent right of the present invention, corresponding legal liabilities will be undertaken.
Claims (10)
1. a kind of multifunctional measuring die body, it is characterised in that cope plate, upper ionisation chamber including vertically stacking gradually are surveyed
Template, Multichannel detection device plate, lung measurement plate, polylith standard buildup measurement plate, polylith film measurement plate, lower ionisation chamber measurement plate and
Lower template, wherein, at least one diagonal of each layer template is provided with positioning hole, the quantity at least two of the positioning hole;
The multifunctional measuring die body also includes the more locating bars for being used to insert the positioning hole, by the way that the locating bar is inserted into institute
Positioning hole is stated, each layer template is integrally fixed.
2. multifunctional measuring die body as claimed in claim 1, it is characterised in that:
At least two inclines are apery build arc-shaped edges in the upper surface of the cope plate;
At least two inclines are apery build arc-shaped edges in the lower surface of the lower template.
3. multifunctional measuring die body as claimed in claim 1, it is characterised in that:
It is carved with the X-axis center line, Y-axis center line and graduation mark of right-angled intersection, each layer template in the upper surface of the cope plate
Four sides be carved with center mark line respectively.
4. multifunctional measuring die body as claimed in claim 1, it is characterised in that:
The upper ionisation chamber measurement plate is identical with the structure of the lower ionisation chamber measurement plate, and its upper surface is respectively equipped with X-axis center
Line, Y-axis center line and graduation mark, three circular holes are respectively equipped with its front, to the left wherein one in face or right flank
A circular hole is respectively equipped with individual side, the circular hole, which is used to insert, carries the ionisation chamber sheath of ionisation chamber or for inserting
Plunger as tissue compensating material.
5. multifunctional measuring die body as claimed in claim 1, it is characterised in that:
The upper surface of the Multichannel detection device plate is provided with multiple semiconductor probe tanks for being used to insert semiconductor detector, and
And Y-axis center line and graduation mark are carved with the upper surface of the Multichannel detection device plate.
6. multifunctional measuring die body as claimed in claim 1, it is characterised in that:
The positive centre position of the lung measurement plate is provided with a circular hole, and the circular hole is used to insert the electricity for carrying ionisation chamber
From room sheath, bone tissue shim rod and as one kind in the plunger of tissue compensating material;The upper surface of the lung measurement plate
Provided with Y-axis center line, graduation mark and two and Human Lung shape identical groove, the groove is symmetrically distributed in Y-axis center
The both sides of line, the groove are used to be embedded in lung tissue compensation block.
7. multifunctional measuring die body as claimed in claim 1, it is characterised in that:
The standard buildup measurement plate has two kinds of different specifications of thickness, also, in the multifunctional measuring die body, it is every kind of
The quantity any combination of the standard buildup measurement plate of specification.
8. multifunctional measuring die body as claimed in claim 7, it is characterised in that:
Two kinds of thickness of the standard buildup measurement plate are respectively 10mm and 5mm.
9. multifunctional measuring die body as claimed in claim 1, it is characterised in that:
The front of the film measurement plate is provided with the groove for being used for placing medical science film, shape, size and the medical science of the groove
Shape, the size of film are identical;The back side of the film measurement plate is provided with the boss for being used for compressing medical science film, the boss
Big I is incorporated in the groove of lower floor's film measurement plate.
10. multifunctional measuring die body as claimed in claim 9, it is characterised in that:
The quantity of the film measurement plate is at least 6 pieces, and the number of plies positioning glue of varying number is provided with every piece of film measurement plate
Piece index aperture.
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CN110967721A (en) * | 2019-12-24 | 2020-04-07 | 中国人民解放军63919部队 | Combined type radiation detector and radiation dose measurement system |
CN110988957B (en) * | 2019-12-24 | 2023-06-02 | 深圳大学 | Measuring device and method for depth dose distribution based on proton irradiation source |
CN117045984A (en) * | 2023-08-01 | 2023-11-14 | 中山大学肿瘤防治中心(中山大学附属肿瘤医院、中山大学肿瘤研究所) | Three-dimensional dose verification die body device |
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CN202149942U (en) * | 2011-07-05 | 2012-02-22 | 徐州市肿瘤医院 | Three-dimensional conformal radiotherapy dosage verifying body |
CN203365688U (en) * | 2013-07-19 | 2013-12-25 | 北京中康联医疗器械开发有限公司 | A multifunctional measurement die body |
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