CN206526059U - Nuclear medicine facility image co-registration accuracy test die body - Google Patents
Nuclear medicine facility image co-registration accuracy test die body Download PDFInfo
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- CN206526059U CN206526059U CN201621260308.0U CN201621260308U CN206526059U CN 206526059 U CN206526059 U CN 206526059U CN 201621260308 U CN201621260308 U CN 201621260308U CN 206526059 U CN206526059 U CN 206526059U
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Abstract
The utility model provides a kind of nuclear medicine facility image co-registration accuracy test die body, including mould bases and upper lid, wherein, the mould bases is cylindric, including annular sidewall and base, the annular sidewall and the base are formed in one structure, and the upper lid is connected with the top of the annular sidewall.Nuclear medicine and CT images are spatially distributed more extensively in the nuclear medicine facility image co-registration accuracy test die body that the utility model is provided, and can more fully assess SPECT/CT and PET/CT image co-registration precision.The test die body is used to measure in SPECT/CT and PET/CT systems due to the deviation of lesion localization in SPECT, PET and CT image caused by system mechanics calibration error and examination couch motion positions error, and reference is provided for the standardization of SPECT/CT and PET/CT performance detections.
Description
Technical field
The utility model is related to technical field of medical equipment, more particularly to a kind of accuracy test die body.
Background technology
Nuclear medicine facility (mainly includes positron emission tomography equipment PET and single photon emission tomographic imaging equipment
SPECT) examined respectively by obtaining the function and anatomic image of patient for disease with X-ray computed tomograohy apparatus CT
It is disconnected, it is the two kinds of imaging patterns commonly used in modern diagnostic imaging medical science.With the developing rapidly of medical technology, nuclear medicine facility skill
The continuous progress of art, the nuclear medicine facility of main flow is all multi-pattern Fusion, mainly PET/CT and SPECT/CT in the market.
Because the spatial resolution of nuclear medicine facility is poor, it is necessary to be positioned etc. by CT images, clinician needs core to cure
Image and CT image co-registrations is learned to get up to carry out medical diagnosis, can be for diagnosis if syncretizing effect is bad or during larger error
As a result significant impact is caused, therefore nuclear medicine facility quality control officer needs to measure PET/CT and SPECT/CT image co-registration
Precision.
Since 1980s, i.e., using image software algorithm by both image co-registrations, to improve the standard of diagnosis
True property, but it is due to CT and nuclear medicine facility image is obtained respectively in the collection twice of different time, different location progress, because
Image is mismatched clearly caused by this motion, and the application of this pure software image interfusion method is limited.Occur afterwards such as base
In diagnosis CT SPECT/CT and PET/CT all-in-ones, SPECT, PET and CT subsystem share an examination couch, in two kinds of collection
Patient is without movement during image, and image registration accuracy is mainly calibrated by system mechanics and checked that bed motion order of accuarcy is determined, because
This registration accuracy is greatly improved compared to independent imaging system.
In SPECT/CT and PET/CT all-in-ones, except the diagnostic function of two subsystems independence, fusion figure may also provide
As to be accurately positioned focus, and the figure of nuclear medicine facility is decayed and scatter correction using CT images, improve SPECT with
PET dosing accuracy.And registration is the basis of image co-registration and decay/scatter correction exactly, therefore, registration accuracy turns into
One of important performance indexes of all-in-one.Bearing calibration and method of testing because of different SPECT/CT and PET/CT machines registration is endless
Complete open, the die body of test is different, and the index of test is also not quite similar, therefore can not unify lateral comparison, and in the world
Still without the related standard of customization registration.
Test image fusion accuracy mainly is carried out using radioactive point source in the market, a number of radioactivity
Power supply is placed on different locus, and the image co-registration deviation of diverse location is tested respectively.Existing frequently-used test die body,
Its die body support is made up of two layers of laminate and four root posts, and laminate and column are all by the plastics relatively low to γ light and X-ray absorption
It is made, respectively there is a round hole corner of each laminate, and its diameter is consistent with centrifuge tube upper end open, for fixing centrifuge tube
In order to be imaged.8 point sources can be placed on the die body support, the cube that the length of side is 20cm is formed.Due to nuclear medicine figure
As collection is gathered by bed, the image co-registration precision of the different machine of comprehensive assessment is unable to using radioactive point source.
Utility model content
In view of the above-mentioned problems, the utility model aims to solve the problem that problem as described above.A purpose of the present utility model is
A kind of any one test die body solved in problem above is provided.Specifically, the utility model offer being capable of comprehensive assessment
The test die body of the image co-registration precision of each locus in IMAQ.
In order to solve the above technical problems, the utility model provides a kind of nuclear medicine facility image co-registration accuracy test mould
Body, the nuclear medicine facility image co-registration accuracy test die body includes mould bases and upper lid, wherein, the mould bases is cylindric, bag
Include annular sidewall and base, the annular sidewall and the base are formed in one structure, the upper lid and the annular sidewall
Top connection.
Wherein, the nuclear medicine facility image co-registration accuracy test die body also includes the first line source and the second line source, described
First line source and second line source are arranged in a crossed manner in the mould bases.
Wherein, the first stuck-module and the second stuck-module, the first end of first line source are provided with the base
It is fixedly connected with first stuck-module, the second end of first line source is set through the upper lid；Second line source
First end be fixedly connected with second stuck-module, the second end of second line source is set through the upper lid.
Wherein, first stuck-module and second stuck-module are arranged at the edge of the base, and institute
State line between the center of the first stuck-module and the base and second stuck-module and the base center it
Between line it is orthogonal.
Wherein, the upper lid includes lid and the first rubber stopper and the second rubber stopper, wherein, the is provided with the lid
One through hole and the second through hole, first rubber stopper are arranged on first through hole, and second rubber stopper is set
On second through hole；The first aperture is provided with first rubber stopper, the second end of first line source passes through institute
State the setting of the first aperture；It is provided with second orifice on second rubber stopper, the second end of second line source is through described the
Two apertures are set.
Wherein, first through hole is respectively positioned on the side of the base with second through hole in the projection of the base
At edge, and it is square with the line of first stuck-module and second stuck-module.
Wherein, the upper lid also includes closure, and the central part of the lid is provided with water filling port, the closure with
The water filling port is tightly connected.
Nuclear medicine and CT images are in space in the nuclear medicine facility image co-registration accuracy test die body that the utility model is provided
Upper distribution is wider, can more fully assess SPECT/CT and PET/CT image co-registration precision.The test die body is used to measure
Due to SPECT, PET caused by system mechanics calibration error and examination couch motion positions error in SPECT/CT and PET/CT systems
With the deviation of lesion localization in CT images, reference is provided for the standardization of SPECT/CT and PET/CT performance detections.
It is read with reference to the drawings the following description for exemplary embodiment, other property features of the present utility model and excellent
Point will become apparent.
Brief description of the drawings
The accompanying drawing for being incorporated into specification and constituting a part for specification shows embodiment of the present utility model, and
And be used to explain principle of the present utility model together with the description.In the drawings, similar reference is used to represent similar
Key element.Drawings in the following description are some embodiments of the present utility model, rather than whole embodiments.It is general for this area
For logical technical staff, on the premise of not paying creative work, other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 schematically illustrates the structural representation of nuclear medicine facility image co-registration accuracy test die body of the present utility model
Figure；
Fig. 2 schematically illustrates the top view of nuclear medicine facility image co-registration accuracy test die body of the present utility model.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.It should be noted that in the case where not conflicting, in the embodiment and embodiment in the application
Feature can mutually be combined.
Basic thought of the present utility model is cornerwise line source to be intersected to form in die body using two, and consider
Influence of the scattering to test image fusion accuracy into human body, injects aqueous medium in die body, can be adopted with comprehensive assessment image
Concentrate the image co-registration precision of each locus.
Below in conjunction with the accompanying drawings, to being entered according to nuclear medicine facility image co-registration accuracy test die body provided by the utility model
Row is described in detail.
Fig. 1 shows a kind of structure of embodiment of nuclear medicine facility image co-registration accuracy test die body of the present utility model
Schematic diagram, shown in reference picture 1, the nuclear medicine facility image co-registration accuracy test die body 100 includes mould bases 1 and upper lid 2.Wherein,
Mould bases 1 is cylindric, including annular sidewall 11 and base 12, and annular sidewall 11 and base 12 are formed in one structure, on
Lid 2 is connected with the top of annular sidewall 11.
In addition, nuclear medicine facility image co-registration accuracy test die body 100 also includes the first line source 3 and the second line source 4, first
The line source 4 of line source 3 and second is arranged in a crossed manner in mould bases 1.Nuclear medicine facility image co-registration accuracy test die body of the present utility model
100 point sources used using line source instead of tradition, it is contemplated that influence of the scattering to test image fusion accuracy in human body, Xiang Mo
Injection aqueous medium in frame 1, can comprehensively be assessed the image co-registration for each locus for gathering image.
Specifically, the first stuck-module 121 and the second stuck-module 122 are provided with base 12, wherein, the first line source 3
First end be fixedly connected with the first stuck-module 121, the second end of the first line source 3 is set through upper lid 2；Second line source 4
First end is fixedly connected with the second stuck-module 122, and the second end of the second line source 4 is set through upper lid 2.It is specific real at one
Apply in example, the aperture of a lateral direction penetrating is provided with the first stuck-module 121, the first end to the first line source 3 is passed through, admittedly
It is fixed；The aperture of a lateral direction penetrating is also equipped with second stuck-module 122, the first end of the second line source 4 to be passed through, admittedly
It is fixed.
Wherein, the first stuck-module 121 and the second stuck-module 122 are arranged at the edge of base 12, and first
The line between line and the second stuck-module 122 and the center of base 12 between the center of stuck-module 121 and base 12
It is orthogonal, realize that the space of mould bases 1 is maximally utilized.
Specifically, upper lid 2 includes being provided with first on the rubber stopper 21 of lid 20 and first and the second rubber stopper 22, lid 20
The through hole 202 of through hole 201 and second, the first rubber stopper 21 is arranged on the first through hole 201, and the second rubber stopper 22 is arranged on
On second through hole 202.Wherein, it is provided with the first aperture 210 on the first rubber stopper 21, the second end of the first line source 3 is through the
One aperture 210 is set；Adaptably, second orifice 220 is provided with the second rubber stopper 22, the second end of the second line source 4 is passed through
Second orifice 220 is set.
The line that internal diameter is 1.2mm for 1mm, external diameter can be used in the line source 4 of the first line source 3 and second of the present utility model
Source capsule, adaptably, the first aperture 210 and second orifice 220 are disposed as 1.2mm diameters, are filled in the first rubber stopper 21
When entering the first through hole 201, the second rubber stopper 22 and filling in the second through hole, corresponding aperture can be squeezed small by extruding, can
To be prevented effectively from use by the outside leak in gap.
In a specific embodiment, the first through hole 201 is respectively positioned on the second through hole 202 in the projection of base 12
The edge of base 12, and be square with the line of the first stuck-module 121 and the second stuck-module 122.
In addition, upper lid 2 also includes closure 23, the central part of lid 20 is provided with water filling port 203, closure 23 and note
The mouth of a river 203 is tightly connected.
When in use, first upper lid 2 is removed, the first end of the first line source 3 and the first end of the second line source 4 fixed respectively
On the first stuck-module 121 and the second stuck-module 122, after the first line source 3 and the second line source 4 are intersected respectively by its second
Hold the aperture through the corresponding rubber stopper on upper lid 2；The top of upper lid 2 and mould bases 1 is fixed, sealed, closure is opened
23, water, side by side bubble removing are filled into mould bases 1 from water filling port 203, closure 23 is tightened and seals；Radiopharmaceutical (is contained
CT reinforcing agents) out of the first through hole 201 or the second through hole 202 injection mould bases 1, stopper corresponding rubber stopper.
The test die body is placed horizontally on PET/CT and SPECT/CT diagnostic couch, by scan nucleus medical image and
The image of CT image capturing line sources, the center that p-wire source images are imaged in nuclear medicine and CT respectively is by contrast
Corresponding image co-registration precision can be obtained.
Descriptions above can combine implementation individually or in a variety of ways, and these variants all exist
Within protection domain of the present utility model.
It should be noted that herein, such as first and second or the like relational terms are used merely to a reality
Body or operation make a distinction with another entity or operation, and not necessarily require or imply these entities or deposited between operating
In any this actual relation or order.Moreover, term " comprising ", "comprising" or its any other variant are intended to
Including for nonexcludability, so that article or equipment including a series of key elements not only include those key elements, but also is wrapped
Other key elements being not expressly set out are included, or are also included for this article or the intrinsic key element of equipment.Do not having more
In the case of many limitations, the key element limited by sentence " including ... ", it is not excluded that in the article including the key element or set
Also there is other identical element in standby.
Above example is only unrestricted to illustrate the technical solution of the utility model, reference only to preferred embodiment pair
The utility model is described in detail.It will be understood by those within the art that, can be to technology of the present utility model
Scheme is modified or equivalent substitution, without departing from the spirit and scope of technical solutions of the utility model, all should be covered at this
Among the right of utility model.
Claims (7)
1. a kind of nuclear medicine facility image co-registration accuracy test die body (100), it is characterised in that including mould bases (1) and upper lid
(2), wherein, the mould bases (1) is cylindric, including annular sidewall (11) and base (12), the annular sidewall (11) and institute
State base (12) to be formed in one structure, the upper lid (2) is connected with the top of the annular sidewall (11).
2. nuclear medicine facility image co-registration accuracy test die body (100) as claimed in claim 1, it is characterised in that the core
Medical supply image co-registration accuracy test die body (100) also includes the first line source (3) and the second line source (4), first line source
And second line source (4) is arranged in a crossed manner in the mould bases (1) (3).
3. nuclear medicine facility image co-registration accuracy test die body (100) as claimed in claim 2, it is characterised in that the bottom
Be provided with the first stuck-module (121) and the second stuck-module (122) on seat (12), the first end of first line source (3) and
First stuck-module (121) is fixedly connected, and the second end of first line source (3) is set through the upper lid (2)；It is described
The first end of second line source (4) is fixedly connected with second stuck-module (122), and the second end of second line source (4) is worn
The upper lid (2) is crossed to set.
4. nuclear medicine facility image co-registration accuracy test die body (100) as claimed in claim 3, it is characterised in that described
One stuck-module (121) and second stuck-module (122) are arranged at the edge of the base (12), and described first
Line and second stuck-module (122) and the base between the center of stuck-module (121) and the base (12)
(12) the line between center is orthogonal.
5. nuclear medicine facility image co-registration accuracy test die body (100) as claimed in claim 3, it is characterised in that on described
Covering (2) includes lid (20) and the first rubber stopper (21) and the second rubber stopper (22), wherein, the is provided with the lid (20)
One through hole (201) and the second through hole (202), first rubber stopper (21) are arranged on first through hole (201),
Second rubber stopper (22) is arranged on second through hole (202)；
It is provided with the first aperture (210) on first rubber stopper (21), the second end of first line source (3) is through described the
One aperture (210) is set；
It is provided with second orifice (220) on second rubber stopper (22), the second end of second line source (4) is through described the
Two apertures (220) are set.
6. nuclear medicine facility image co-registration accuracy test die body (100) as claimed in claim 5, it is characterised in that described
One through hole (201) is respectively positioned on the side of the base (12) with second through hole (202) in the projection of the base (12)
At edge, and it is square with the line of first stuck-module (121) and second stuck-module (122).
7. nuclear medicine facility image co-registration accuracy test die body (100) as claimed in claim 5, it is characterised in that on described
Covering (2) also includes closure (23), and the central part of the lid (20) is provided with water filling port (203), the closure (23)
It is tightly connected with the water filling port (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260308.0U CN206526059U (en) | 2016-11-21 | 2016-11-21 | Nuclear medicine facility image co-registration accuracy test die body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621260308.0U CN206526059U (en) | 2016-11-21 | 2016-11-21 | Nuclear medicine facility image co-registration accuracy test die body |
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| CN206526059U true CN206526059U (en) | 2017-09-29 |
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| CN201621260308.0U Active CN206526059U (en) | 2016-11-21 | 2016-11-21 | Nuclear medicine facility image co-registration accuracy test die body |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109254020A (en) * | 2018-11-21 | 2019-01-22 | 江苏省计量科学研究院 | A kind of Micro-CT scanning image spatial resolution die body of included positioning device |
| CN109394215A (en) * | 2018-11-16 | 2019-03-01 | 上海京悦机械有限公司 | A kind of medical instrument die body and fixture and processing technology |
-
2016
- 2016-11-21 CN CN201621260308.0U patent/CN206526059U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109394215A (en) * | 2018-11-16 | 2019-03-01 | 上海京悦机械有限公司 | A kind of medical instrument die body and fixture and processing technology |
| CN109254020A (en) * | 2018-11-21 | 2019-01-22 | 江苏省计量科学研究院 | A kind of Micro-CT scanning image spatial resolution die body of included positioning device |
| CN109254020B (en) * | 2018-11-21 | 2023-09-22 | 江苏省计量科学研究院 | From microscopic CT image spatial resolution die body of taking positioner |
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