CN211554291U - Quality control die body of magnetic resonance simulation positioning machine - Google Patents
Quality control die body of magnetic resonance simulation positioning machine Download PDFInfo
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- CN211554291U CN211554291U CN202020112052.9U CN202020112052U CN211554291U CN 211554291 U CN211554291 U CN 211554291U CN 202020112052 U CN202020112052 U CN 202020112052U CN 211554291 U CN211554291 U CN 211554291U
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Abstract
The utility model provides a magnetic resonance simulation location machine matter accuse die body, its characterized in that: the quality control die body of the magnetic resonance simulation positioning machine comprises an image part quality control die body and a spatial position quality control die body; the image part quality control die body comprises a top cover, a base, a transparent cylinder body connected between the top cover and the base, and a scanning thickness layer, a spatial linear layer, a spatial resolution layer, a low-contrast resolution layer and an image uniform layer which are sequentially arranged in the cylinder body; the spatial position quality control die body is positioned on the outer side of the base; and small round holes with different marking positions are formed in the spatial position quality control die body, and liquid is filled in the round holes. The utility model discloses a magnetic resonance simulation positioning machine matter accuse die body includes image part matter accuse die body and spatial position matter accuse die body, and image part matter accuse die body can carry out quantitative examination from several aspects such as SNR, image homogeneity, space linearity, spatial resolution, low contrast resolution, T1/T2 value, and measurement accuracy is high.
Description
Technical Field
The utility model relates to a magnetic resonance imaging technical field particularly, relates to a magnetic resonance simulation location machine matter accuse die body.
Background
The quality control die body of the magnetic resonance imager is used for detecting the indexes of the images finally given by the magnetic resonance imager. In the prior art, a quality control phantom can detect length indexes of a magnetic resonance imager, such as resolution, layer thickness, artifact, contrast, signal-to-noise ratio, and the like, that is, an existing quality control phantom can only detect and control the length indexes of the magnetic resonance imager. In the tumor radiotherapy process, the requirements on the accuracy of the spatial position and the repeatability of the positioning are high, so that the research and development of the magnetic resonance simulation positioning technology are concerned more and more widely. However, magnetic resonance also has its drawbacks:
first, when entering an object in a magnetic resonance magnetic field, magnetic field sensitivity or chemical shift effects (effects caused by the object in the field) are generated to distort the set shape and signal strength.
Secondly, magnetic resonance imaging is prone to geometric and gray scale distortions, which mainly result from static field inhomogeneities and gradient non-linearities, the closer to the image edges the more severe the gradient and static field distortions, which require post-correction by the MR machine.
The geometric deformation, chemical shift effect and dose calculation accuracy of the magnetic resonance simulation positioning machine are related to the accuracy of the whole radiotherapy process, and the accurate reading requirement of the radiotherapy plan can be ensured only by further metering and calibrating the problems of the quality, the geometric dimension and the like of a magnetic resonance image.
The magnetic resonance performance parameter detection is an important content of the quality assurance and quality control work of the magnetic resonance imaging equipment, and no special die body of a magnetic resonance analog positioning machine is available in the market, and most of the die bodies are randomly equipped by the magnetic resonance imaging equipment. However, the mold bodies prepared by different manufacturers have great difference, performance test parameters are not comprehensive, the mold bodies are different in filling liquid and poor in compatibility during performance test, and the performance detection requirements of the magnetic resonance imaging positioning simulation equipment at home and abroad in the same year cannot be met.
Therefore, how to design a set of functional image quantitative index detection phantom of the magnetic resonance simulation positioner and write local verification rules to carry out quantitative verification on images of the magnetic resonance simulation positioner from the aspects of signal-to-noise ratio, image uniformity, spatial linearity, spatial resolution, low-contrast resolution, T1/T2 value and the like becomes a technical research problem for providing data guarantee for the quality and precision control of radiotherapy plan.
Disclosure of Invention
For overcoming the technical problem that the magnetic resonance performance parameter detection capability test parameter among the prior art is incomplete, the data precision is not high, the utility model provides a magnetic resonance simulation positioning machine matter accuse die body.
The technical scheme of the utility model is that: the utility model provides a magnetic resonance simulation location machine matter accuse die body which characterized in that: the quality control die body of the magnetic resonance simulation positioning machine comprises an image part quality control die body and a spatial position quality control die body; the image part quality control die body comprises a top cover, a base, a transparent cylinder body connected between the top cover and the base, and a scanning thickness layer, a spatial linear layer, a spatial resolution layer, a low-contrast resolution layer and an image uniform layer which are sequentially arranged in the cylinder body; the spatial position quality control die body is positioned on the outer side of the base; and small round holes with different marking positions are formed in the spatial position quality control die body, and liquid is filled in the round holes.
On the basis, the cylinder is made of glass material; the top cover and the base are detachably connected, and the top cover is provided with a through hole for liquid passing and exhausting.
On the basis, a plurality of limiting clamping grooves are formed in the inner wall of the cylinder body and used for clamping a scanning thickness layer, a spatial linear layer, a spatial resolution layer, a low-contrast resolution layer and an image uniform layer.
On the basis, the scanning thickness layer comprises a support plate and a frame which is in a shape of a Chinese character 'hui' as a whole; the end face of the frame is connected to the support plate; four surfaces of the outer wall of the frame are provided with inclined plane plates; the included angle between the inclined plane plate and the outer wall of the frame is 15-30 degrees.
On this basis, the space linear layer comprises a space linear test disc and a plurality of rectangular test through holes which are arranged on the space linear test disc in a rectangular array.
On this basis, the spatial resolution layer comprises a spatial resolution test disc and a plurality of groups of strip-shaped test through holes which are arranged on the spatial resolution test disc and are distributed in an annular array around the center of the disc.
On the basis, an isosceles right triangle through hole is also formed in the space resolution testing disc of the space resolution layer; and an acute angle vertex of the isosceles right triangle through hole is positioned at the center of the spatial resolution test disc.
On this basis, low contrast resolution layer includes low contrast resolution test dish and the circular test through-hole that is located many on the low contrast resolution test dish and is equidistant annular array distribution around the dish center.
On the basis, the aperture of the circular test through hole is sequentially increased from the circle center to the outside.
On this basis, the image uniformity layer comprises an image test disc and frame-shaped test holes positioned on the image test disc.
On the basis, the spatial position quality control die body is a convex moon-shaped test disc, the disc is provided with a longitudinal axis and an abscissa axis, a plurality of small round holes are arranged on the longitudinal axis and the abscissa axis and in quadrants formed by the coordinate axes, each small round hole is marked with different coordinate positions, and liquid is filled in the small round holes.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a magnetic resonance simulation location machine matter accuse die body, include image part matter accuse die body and spatial position matter accuse die body, image part matter accuse die body can be followed the SNR, image homogeneity, space linearity, spatial resolution, low contrast resolution, several aspects such as T1/T2 value carry out quantitative examination, can measure multiple parameter simultaneously, can satisfy different test demands, spatial position matter accuse die body can judge whether image and actual position have the skew according to scanning aperture position, and carry out the check-up, therefore measurement accuracy is high.
Drawings
Fig. 1 is a schematic structural diagram of a mass control mold body of a magnetic resonance analog positioning machine of the present invention;
fig. 2 is a schematic structural diagram of a scanning thickness layer according to the present invention;
fig. 3 is a schematic structural diagram of a spatial linear layer in the present invention;
fig. 4 is a schematic structural diagram of a spatial resolution layer in the present invention;
FIG. 5 is a schematic structural view of a low contrast resolving power layer in accordance with the present invention;
fig. 6 is a schematic structural view of an image uniformity layer in the present invention;
fig. 7 is a schematic structural view of a spatial position quality control mold body according to the present invention;
the reference numbers are as follows: 1. image part quality control die body; 11. a top cover; 12. scanning the thickness layer; 121. a support disc; 122. a frame; 123. an inclined plane plate; 13. a spatially linear layer; 131. a spatial linear test tray; 132. a rectangular test via; 14. a spatial resolution layer; 141. a spatial resolution test disk; 142. strip-shaped test through holes; 143. an isosceles right triangle through hole; 15. a low contrast resolution layer; 151. a low contrast resolution test disk; 152. a circular test through hole; 16. an image uniformity layer; 161. an image test tray; 162. a frame-shaped test hole; 17. a base; 2. a spatial position quality control die body; 21. a convex moon-shaped test tray; 22. a small round hole.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in fig. 1, a magnetic resonance simulation positioning machine quality control mold body includes an image portion quality control mold body 1 and a spatial position quality control mold body 2; the image part quality control die body 1 comprises a top cover 11, a base 17, a transparent cylinder body connected between the top cover 11 and the base 17, and a scanning thickness layer 12, a spatial linear layer 13, a spatial resolution layer 14, a low-contrast resolution layer 15 and an image uniform layer 16 which are sequentially arranged in the cylinder body; the spatial position quality control die body 2 is positioned on the outer side of the base 17; the spatial position quality control die body 2 is provided with small round holes with different marking positions, and liquid is filled in the round holes.
The cylinder body is made of glass material; the top cover 11 and the base 17 are detachably connected, and the top cover 11 is provided with a through hole for liquid passing and air exhausting.
The inner wall of the cylinder body is provided with a plurality of limiting clamping grooves, and the limiting clamping grooves are used for clamping the scanning thickness layer 12, the spatial linear layer 13, the spatial resolution layer 14, the low-contrast resolution layer 15 and the image uniform layer 16.
As shown in fig. 2, scan thickness layer 12 comprises a support plate 121 and an overall frame 122 shaped like a Chinese character 'hui'; the end face of the frame 122 is connected to the support disc; four surfaces of the outer wall of the frame 122 are provided with inclined plane plates 123; the angle between the inclined plane 123 and the outer wall of the frame 122 is 15-30 degrees. The inclined plane width of the inclined plane plate of the scanning thickness layer is increased in the embodiment, the profile curve of a large sample without fixed structure interference is convenient to obtain, and the influence of random errors is reduced.
As shown in fig. 3, the spatially linear layer 13 includes a spatially linear test disk 131 and a plurality of rectangular test through holes 132 disposed in a rectangular array on the spatially linear test disk.
As shown in fig. 4, the spatial resolution layer 14 includes a spatial resolution test disk 141 and a plurality of sets of strip-shaped test through holes 142 arranged in an annular array around the center of the disk on the spatial resolution test disk. The space resolution test disc of the space resolution layer 14 is also provided with an isosceles right triangle through hole 143; one acute vertex of the isosceles right triangle through hole 143 is located at the center of the spatial resolution test tray.
As shown in fig. 5, the low contrast resolution layer 15 includes a low contrast resolution test disk 151 and a plurality of circular test through holes 152 disposed on the low contrast resolution test disk in an equally spaced annular array around the center of the disk. The aperture of the circular test through hole is sequentially increased from the circle center to the outside.
As shown in fig. 6, the image uniformizing layer 16 includes an image test pad 161 and a frame-shaped test hole 162 on the image test pad 161.
As shown in fig. 7, the spatial position quality control mold body 2 is a convex moon-shaped test disk 21, the disk is provided with a longitudinal axis and an abscissa axis, a plurality of small round holes 22 are arranged on the longitudinal axis, the abscissa axis and a quadrant formed by the coordinate axes, each small round hole is marked with a different coordinate position, and liquid is filled in the small round hole.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses a magnetic resonance simulation location machine matter accuse die body, include image part matter accuse die body and spatial position matter accuse die body, image part matter accuse die body can be followed the SNR, image homogeneity, space linearity, spatial resolution, low contrast resolution, several aspects such as T1/T2 value carry out quantitative examination, can measure multiple parameter simultaneously, can satisfy different test demands, spatial position matter accuse die body can judge whether image and actual position have the skew according to scanning aperture position, and carry out the check-up, therefore measurement accuracy is high.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not intended to be exhaustive or to exclude other embodiments and may be used in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. The utility model provides a magnetic resonance simulation location machine matter accuse die body which characterized in that: the quality control die body of the magnetic resonance simulation positioning machine comprises an image part quality control die body (1) and a spatial position quality control die body (2); the image part quality control die body (1) comprises a top cover (11), a base (17), a transparent cylinder body connected between the top cover (11) and the base (17), and a scanning thickness layer (12), a spatial linear layer (13), a spatial resolution layer (14), a low-contrast resolution layer (15) and an image uniform layer (16) which are sequentially arranged in the cylinder body; the spatial position quality control die body (2) is positioned on the outer side of the base (17); and small round holes with different marking positions are formed in the spatial position quality control die body (2), and liquid is filled in the round holes.
2. The magnetic resonance simulation positioning machine quality control die body of claim 1, characterized in that: top cap (11) and base (17) are for dismantling the connection, top cap (11) are equipped with and are used for leading to liquid and carminative through-hole.
3. The magnetic resonance simulation positioning machine quality control die body of claim 1, characterized in that: the inner wall of the cylinder body is provided with a plurality of limiting clamping grooves, and the limiting clamping grooves are used for clamping a scanning thickness layer (12), a spatial linear layer (13), a spatial resolution layer (14), a low-contrast resolution layer (15) and an image uniform layer (16).
4. The magnetic resonance simulation positioning machine quality control die body of claim 1, characterized in that: the scanning thickness layer (12) comprises a support disc (121) and a frame (122) which is in a shape of a Chinese character 'hui' as a whole; the end face of the frame (122) is connected to the supporting disc; inclined plane plates (123) are arranged on four surfaces of the outer wall of the frame (122); the included angle between the inclined plane plate (123) and the outer wall of the frame (122) is 15-30 degrees.
5. The magnetic resonance simulation positioning machine quality control die body of claim 1, characterized in that: the spatial linear layer (13) comprises a spatial linear test disc (131) and a plurality of rectangular test through holes (132) which are arranged on the spatial linear test disc in a rectangular array.
6. The magnetic resonance simulation positioning machine quality control die body of claim 1, characterized in that: the spatial resolution layer (14) comprises a spatial resolution test disc (141) and a plurality of groups of strip-shaped test through holes (142) which are arranged on the spatial resolution test disc and distributed in an annular array around the center of the disc.
7. The magnetic resonance simulation positioning machine quality control die body of claim 6, characterized in that: an isosceles right triangle through hole (143) is also arranged on the space resolution testing disc of the space resolution layer (14); an acute angle vertex of the isosceles right triangle through hole (143) is positioned at the center of the spatial resolution test disc.
8. The magnetic resonance simulation positioning machine quality control die body of claim 1, characterized in that: the low-contrast resolution layer (15) comprises a low-contrast resolution test disc (151) and a plurality of circular test through holes (152) which are arranged on the low-contrast resolution test disc and distributed in an equally-spaced annular array around the center of the disc; the aperture of the circular test through hole is sequentially increased from the circle center to the outside.
9. The magnetic resonance simulation positioning machine quality control die body of claim 1, characterized in that: the image uniformity layer (16) includes an image test disk (161) and frame-shaped test holes (162) located on the image test disk.
10. The magnetic resonance simulation positioning machine quality control die body of claim 1, characterized in that: the spatial position quality control die body (2) is a convex moon-shaped test disc (21), longitudinal and horizontal axes are arranged on the test disc, a plurality of small round holes (22) are arranged on the longitudinal and horizontal axes and in quadrants formed by the coordinate axes, each small round hole is marked with a different coordinate position, and liquid is filled in the small round holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112052.9U CN211554291U (en) | 2020-01-16 | 2020-01-16 | Quality control die body of magnetic resonance simulation positioning machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112052.9U CN211554291U (en) | 2020-01-16 | 2020-01-16 | Quality control die body of magnetic resonance simulation positioning machine |
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| CN211554291U true CN211554291U (en) | 2020-09-22 |
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| CN202020112052.9U Expired - Fee Related CN211554291U (en) | 2020-01-16 | 2020-01-16 | Quality control die body of magnetic resonance simulation positioning machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113100797A (en) * | 2021-04-18 | 2021-07-13 | 厦门大学附属第一医院 | Die body for quality control of CT (computed tomography) simulation positioning machine |
-
2020
- 2020-01-16 CN CN202020112052.9U patent/CN211554291U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113100797A (en) * | 2021-04-18 | 2021-07-13 | 厦门大学附属第一医院 | Die body for quality control of CT (computed tomography) simulation positioning machine |
| CN113100797B (en) * | 2021-04-18 | 2023-04-28 | 厦门大学附属第一医院 | A die body for CT simulation positioning machine matter accuse |
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Granted publication date: 20200922 Termination date: 20220116 |