CN108378863A - A kind of CBCT imaging performances test body mould - Google Patents
A kind of CBCT imaging performances test body mould Download PDFInfo
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- CN108378863A CN108378863A CN201810199617.9A CN201810199617A CN108378863A CN 108378863 A CN108378863 A CN 108378863A CN 201810199617 A CN201810199617 A CN 201810199617A CN 108378863 A CN108378863 A CN 108378863A
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- 238000012360 testing method Methods 0.000 title claims abstract description 91
- 238000003384 imaging method Methods 0.000 title claims abstract description 24
- 238000007408 cone-beam computed tomography Methods 0.000 title claims abstract 8
- 239000011159 matrix material Substances 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims description 6
- 230000004308 accommodation Effects 0.000 claims description 3
- 239000002356 single layer Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 abstract description 4
- 238000011990 functional testing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000011056 performance test Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 210000000214 mouth Anatomy 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003325 tomography Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/58—Testing, adjusting or calibrating thereof
- A61B6/582—Calibration
- A61B6/583—Calibration using calibration phantoms
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- Engineering & Computer Science (AREA)
- Radiology & Medical Imaging (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- High Energy & Nuclear Physics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
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- Laminated Bodies (AREA)
Abstract
The present invention provides a kind of CBCT imaging performances test body moulds, the matrix and test suite of square groove are equipped with including center, the test suite is the square shape to match with the square groove, the test suite is placed in the square groove, and the test suite can embed the test card of setting index according to demand.The present invention adds the scheme that functional test component is applied in combination using matrix, and body mould overall dimensions are smaller, and storage is simple, easy to carry；It in addition, multifunctional testing component is designed using square, can be fitted into matrix according to different directions, realize the test of index different directions of the same race by changing the direction that component is packed into, greatly simplify the composition of body mould.
Description
Technical field
The present invention relates to CBCT imaging performance test body mould technical fields, more particularly to a kind of portable, multi-functional CBCT
Imaging performance test body mould.
Background technology
CBCT (Cone beam CT, conical beam CT) is a kind of X ray CT carrying out three-dimensional imaging using planar array detector
System is chiefly used in oral cavity field at present, and imaging inspection is carried out to the oromaxillo-facial region of patient.
In CBCT system properties, imaging performance is one of most critical, directly determines whether the system disclosure satisfy that
Clinical demand, therefore be frequently necessary to that the imaging performance of system is tested and evaluated in practice, such as system research and development process, user
Adoption process and maintenance process after coming into operation all must attention location system imaging performances.
The following index of evaluation Main Basiss of imaging performance：Spatial resolution, low contrast resolution, signal noise ratio (snr) of image,
Gray value of image uniformity, linear measure longimetry accuracy and angle measurement accuracy etc..Currently, the test for these indexs has
Unified, specific method, can refer to professional standard《The oral cavities YY/T 0795-2010 X-ray Digital tomography device-specific
Technical conditions》In related content.But test used in body mould do not unify, and existing body mould all there is a problem of it is respective.
《The oral cavities YY/T 0795-2010 X-ray Digital tomography device-specific technical conditions》In appendix A and Appendix B
Body mould not aim at CBCT systems design.Body mould wherein in appendix A is used for test image signal-to-noise ratio and ash in this standard
The part of its uniform material is used only in angle value uniformity, and practical functional areas are simultaneously not used；Body mould in Appendix B be then for DR,
Song is disconnected to wait two-dimensional imagings system design, is not properly suited for this 3-D imaging systems of CBCT.
Divided by outside the recommendatory body mould in upper standard, separately there is the commercialization imaging performance test body mould of CBCT system-specifics,
Such as the SEDENTEXCT IQ test body moulds of Leeds Test Objects companies.The problem of this kind of body mould, is, in order to use list
Integral mold comprehensively covers all test items as far as possible, and the size of body mould is very huge, and special hutch is needed to store, and carries not
Just, and the design of the test suite of body mould is sufficiently complex, cannot flexibly use.
Invention content
In view of the deficiencies of the prior art, the present invention proposes a kind of new CBCT imaging performance test body moulds, this body die bodys
Product is small, easy to carry, and can be used in the test of all imaging performance test indexs.
To achieve the goals above, this invention takes following technical solutions：
The present invention provides a kind of CBCT imaging performances test body moulds, including center to be equipped with matrix and the test of square groove
Component, the test suite are the square shape to match with the square groove, and the test suite is placed in the side
In connected in star.
Further, the test suite embeds accommodation space resolution chart, low contrast resolution test card, letter
Make an uproar than with uniformity test card and length and one kind in angle measurement accuracy test card.
Further, described matrix is cylinder, and the cross section of the cylinder is circle, circular a diameter of 60mm~
The height of 200mm, the cylinder are 40mm~100mm.
Further, described matrix is cylinder, and the cross section of the cylinder is regular polygon, the regular polygon it is external
Circular diameter is 60mm~200mm, and the height of the cylinder is 40mm~100mm.
Further, the depth of the square groove is 30mm~90mm, the length of side of the square groove be 30mm~
90mm。
Further, described matrix is single layer structure or is multilayer nest structure.
As seen from the above technical solution provided by the invention, the present invention adds the combination of functional test component using matrix
The scheme used, body mould overall dimensions are smaller, and storage is simple, easy to carry.In addition, multifunctional testing component is set using square
Meter, can be fitted into according to different directions in matrix.Each test index only needs a component, the side being packed by changing component
Always the test for realizing index different directions of the same race, greatlies simplify the composition of body mould.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without having to pay creative labor, other are can also be obtained according to these attached drawings
Attached drawing.
Fig. 1 is the longitudinal sectional drawing that the cross section provided in an embodiment of the present invention is circular matrix；
Fig. 2 is the vertical view that the cross section provided in an embodiment of the present invention is circular matrix；
Fig. 3 is the test structure sectional view of the spatial resolution test card provided in an embodiment of the present invention；
Fig. 4 is the test structure sectional view of the low contrast resolution test card provided in an embodiment of the present invention；
Fig. 5 is the test structure sectional view of the signal-to-noise ratio provided in an embodiment of the present invention and uniformity test card；
Fig. 6 is the test structure section of the length provided in an embodiment of the present invention and angle measurement accuracy test card
Figure.
【Reference numeral】
1- matrixes；2- square grooves.
Specific implementation mode
Embodiments of the present invention are described below in detail, the example of the embodiment is shown in the accompanying drawings, wherein from beginning
Same or similar element or element with the same or similar functions are indicated to same or similar label eventually.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the present invention, and is not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative " one " used herein, " one
It is a ", " described " and "the" may also comprise plural form.It is to be further understood that is used in the specification of the present invention arranges
It refers to there are the feature, integer, step, operation, element and/or component, but it is not excluded that presence or addition to take leave " comprising "
Other one or more features, integer, step, operation, element, component and/or their group.It should be understood that when we claim member
Part is " connected " or when " coupled " to another element, it can be directly connected or coupled to other elements, or there may also be
Intermediary element.In addition, " connection " used herein or " coupling " may include being wirelessly connected or coupling.Wording used herein
"and/or" includes any cell of one or more associated list items and all combines.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific terminology) there is meaning identical with the general understanding of the those of ordinary skill in fields of the present invention.Should also
Understand, those terms such as defined in the general dictionary, which should be understood that, to be had and the meaning in the context of the prior art
The consistent meaning of justice, and unless defined as here, will not be with idealizing or the meaning of too formal be explained.
For ease of the understanding to the embodiment of the present invention, done further by taking several specific embodiments as an example below in conjunction with attached drawing
Explanation, and each embodiment does not constitute the restriction to the embodiment of the present invention.
Embodiment one
A kind of CBCT imaging performances test body mould is present embodiments provided, as shown in Figure 1 and Figure 2, which surveys
Examination body mould includes the matrix 1 and test suite that center is equipped with square groove 2, and the test suite is and 2 phase of the square groove
Matched pros' shape, the test suite are placed in the square groove 2.
In the present embodiment, the groove 2 in described matrix 1 is set as square shape, corresponding test suite is also just
Test suite can be fitted into according to different directions in matrix 1, greatlies simplify the composition of body mould by cube in this way.In practice,
Groove 2 in described matrix 1 can also be set as other shapes, and only the test suite of respective shapes cannot be arbitrary towards installation.
Described matrix is cylinder, and the cross section of the cylinder is circle, circular a diameter of 60mm~200mm, institute
The height for stating cylinder is 40mm~100mm.
In the present embodiment, it is circular matrix schematic diagram that Fig. 1 and Fig. 2, which is cross section, it is preferred that described matrix 1 it is straight
Diameter is 160mm, and the height of described matrix 1 is 50mm.
In a specific embodiment, the cross section of the cylinder can also be regular polygon, the regular polygon
Circumscribed circle diameter is 60mm~200mm, and the height of described matrix is 40mm~100mm；Preferably, described matrix 1 is positive six side
The circumscribed circle length of side of shape, described matrix 1 is 160mm, and the height of described matrix 1 is 50mm.
In the present embodiment, described matrix is single layer structure or is multilayer nest structure.
In the present embodiment, the depth of the square groove 2 is 30mm~90mm, and the length of side of the square groove 2 is
30mm~90mm, square groove shape and position are as shown in Figure 1 and Figure 2, in actual machine designs and processes, square groove side
Long or 0.05mm bigger 0.1mm than test suite, is easily installed.
In the present embodiment, the test suite embeds accommodation space resolution chart, low contrast resolution test
Card, signal-to-noise ratio and uniformity test card and length and one kind in angle measurement accuracy test card.
In the present embodiment, the spatial resolution test card, low contrast resolution test card, signal-to-noise ratio and uniformity
Test card and length are respectively used to test space resolution ratio, low contrast resolution, letter with angle measurement accuracy test card
Make an uproar than with uniformity and length and angle accuracy, and respectively have different build-in-test structures, such as Fig. 3, Fig. 4, figure
5, shown in Fig. 6.
Spatial resolution test card is interior embedding to structure；
Low contrast resolution test card is embedded with the cylinder with different-diameter made of different materials；
Signal-to-noise ratio and uniformity test card are made of organic glass completely without insert structure；
The cylinder that length and angle accuracy test card are embedded with specific length and are arranged according to special angle.
In a specific embodiment, in test suite of the present invention can also include metal artifacts test card and
Geometry test card etc. is respectively used to measure metal artifacts and geometric distortion.
Embodiment two
The present embodiment provides a kind of test body mould, which is made of matrix and multifunctional testing component two parts.
In the present embodiment, the major part of the whole and described multifunctional testing component of described matrix is all closed by of the same race, density
Suitable homogeneous material is made, such as organic glass.
In the present embodiment, described matrix thickness is 50mm, radius 160mm；The depth of the square hole at described matrix center
Degree is 40mm, length of side 40.1mm；The multifunctional testing component is square, length of side 40mm；The multifunctional testing group
Part can be just packed into the square hole of matrix center.
In the present embodiment, which is made of 1 matrix and 4 multifunctional testing components.4 multifunctional testings
Component is respectively used to test space resolution ratio, low contrast resolution, signal-to-noise ratio and uniformity and length and angle accuracy,
Respectively there is different build-in-test structures, it is as follows：
Embedding is to structure in spatial resolution test suite；
Low contrast resolution test suite is embedded with the cylinder with different-diameter made of different materials；
Signal-to-noise ratio and uniformity test component are made of organic glass completely without insert structure；
The cylinder that length and angle accuracy test suite are embedded with specific length and are arranged according to special angle.
In conclusion the body film described in the embodiment of the present invention using matrix due to adding what functional test component was applied in combination
Scheme, body mould overall dimensions are smaller, and storage is simple, easy to carry.In addition, multifunctional testing component is designed using square, it can
It is fitted into matrix according to different directions.Each test index only needs a component, by change component be packed into direction come
The test for realizing index different directions of the same race, greatlies simplify the composition of body mould.
One of ordinary skill in the art will appreciate that：Attached drawing is the schematic diagram of one embodiment, module in attached drawing or
Flow is not necessarily implemented necessary to the present invention.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Any one skilled in the art in the technical scope disclosed by the present invention, the change or replacement that can be readily occurred in,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
Subject to.
Claims (6)
1. a kind of CBCT imaging performances test body mould, which is characterized in that be equipped with the matrix and test group of square groove including center
Part, the test suite are the square shape to match with the square groove, and the test suite is placed in described rectangular
In groove.
2. CBCT imaging performances test body mould according to claim 1, which is characterized in that
The test suite embeds accommodation space resolution chart, low contrast resolution test card, signal-to-noise ratio and uniformity
Test card and length and one kind in angle measurement accuracy test card.
3. CBCT imaging performances test body mould according to claim 1, which is characterized in that described matrix is cylinder, described
The cross section of cylinder is circle, and the height of circular a diameter of 60mm~200mm, the cylinder are 40mm~100mm.
4. CBCT imaging performances test body mould according to claim 1, which is characterized in that described matrix is cylinder, described
The cross section of cylinder is regular polygon, and the circumscribed circle diameter of the regular polygon is 60mm~200mm, and the height of the cylinder is
40mm~100mm.
5. CBCT imaging performances test body mould according to claim 1, which is characterized in that the depth of the square groove is
The length of side of 30mm~90mm, the square groove are 30mm~90mm.
6. CBCT imaging performances test body mould according to claim 1, which is characterized in that described matrix be single layer structure or
Person is multilayer nest structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810199617.9A CN108378863A (en) | 2018-03-12 | 2018-03-12 | A kind of CBCT imaging performances test body mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810199617.9A CN108378863A (en) | 2018-03-12 | 2018-03-12 | A kind of CBCT imaging performances test body mould |
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| Publication Number | Publication Date |
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| CN108378863A true CN108378863A (en) | 2018-08-10 |
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| CN201810199617.9A Pending CN108378863A (en) | 2018-03-12 | 2018-03-12 | A kind of CBCT imaging performances test body mould |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205994511U (en) * | 2016-06-20 | 2017-03-08 | 广州华端科技有限公司 | Imaging performance tests module |
| CN106923854A (en) * | 2017-03-21 | 2017-07-07 | 泰山医学院 | A kind of comprehensive Quality Control body mould suitable for PET/CT |
| CN107348968A (en) * | 2017-08-07 | 2017-11-17 | 泰山医学院 | A kind of general high-precision body mould of conical beam CT |
| US20180047303A1 (en) * | 2015-03-06 | 2018-02-15 | Stellenbosch University | Imaging phantom for radiation based equipment |
| CN209032397U (en) * | 2018-03-12 | 2019-06-28 | 北京朗视仪器有限公司 | A kind of CBCT imaging performance test body mould |
-
2018
- 2018-03-12 CN CN201810199617.9A patent/CN108378863A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20180047303A1 (en) * | 2015-03-06 | 2018-02-15 | Stellenbosch University | Imaging phantom for radiation based equipment |
| CN205994511U (en) * | 2016-06-20 | 2017-03-08 | 广州华端科技有限公司 | Imaging performance tests module |
| CN106923854A (en) * | 2017-03-21 | 2017-07-07 | 泰山医学院 | A kind of comprehensive Quality Control body mould suitable for PET/CT |
| CN107348968A (en) * | 2017-08-07 | 2017-11-17 | 泰山医学院 | A kind of general high-precision body mould of conical beam CT |
| CN209032397U (en) * | 2018-03-12 | 2019-06-28 | 北京朗视仪器有限公司 | A kind of CBCT imaging performance test body mould |
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Address after: 100084 A800B, 8 floor, Tsinghua Tongfang mansion, Tsinghua Yuan, Haidian District, Beijing Applicant after: Beijing Langshi Instrument Co.,Ltd. Address before: 100084 Beijing city Haidian District Shuangqing Road with building A, room 800B Applicant before: LARGEV INSTRUMENT Corp.,Ltd. |