CN211560131U - PET-CT image fusion position calibration die body - Google Patents
PET-CT image fusion position calibration die body Download PDFInfo
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- CN211560131U CN211560131U CN201922281562.9U CN201922281562U CN211560131U CN 211560131 U CN211560131 U CN 211560131U CN 201922281562 U CN201922281562 U CN 201922281562U CN 211560131 U CN211560131 U CN 211560131U
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Abstract
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a PET-CT image fusion position calibration die body, include: the shell, be located columniform main part in the shell, with the upper cover that the shell upper end corresponds, the main part middle part is equipped with first trompil, the main part still is equipped with to be located respectively the main part upper surface the main part lower surface is followed a plurality of guiding gutters, a plurality of guiding gutters down of going up of first trompil radial extension, go up the guiding gutter with be equipped with the second trompil down between the guiding gutter. Through the plurality of openings and the plurality of flow guide grooves, the calibration die body can conveniently carry out PET/CT image fusion position calibration operation, and later PET/CT image fusion position calibration quality is guaranteed; and the structure is simple, the use is convenient, the radioactive liquid used in the calibration of the fusion position of the PET/CT image is easy to obtain, the storage is simple, and the use cost can be reduced.
Description
Technical Field
The utility model belongs to the technical field of the medical instrument technique and specifically relates to a PET-CT image fusion position calibration die body.
Background
In PET/CT (Positron Emission Tomography/(X-ray) Computer Tomography), PET/CT is applied to the scanning of living (living) bodies. The PET tomographic image can provide the function and metabolism information of the organism, the CT tomographic image can provide the focus anatomical positioning information of the organism, the fusion image of the PET tomographic image and the CT tomographic image can obtain the tomographic image of the organism in each direction, and the CT tomographic image have the characteristics of sensitivity, accuracy, specificity and accurate positioning.
The operating parameters of each system in the PET/CT equipment can drift along with time and the position of the PET/CT image display is shifted due to the reassembling position shift caused by the processing tolerance of each part of the PET/CT equipment after the PET/CT equipment is disassembled and maintained, so that the position of the PET image display is different from the position of the CT image display. The process of mutually offsetting and eliminating the positions of the PET image and CT image displays within the FOV (Field of view) is called PET/CT image fusion position calibration. Before the PET/CT image fusion, the image fusion position calibration of the PET/CT device is an indispensable step.
As the working parameters of each system in the PET/CT drift along with the time, the last image fusion position calibration content does not accord with the current state of the system any more after a period of time, and the image fusion position calibration needs to be carried out again, and is the necessary routine calibration of the PET/CT. The mold body with the cavity is mainly applied to PET/CT image fusion position calibration at present, positron radioactive liquid is injected into the cavity, the region where the radioactive liquid is located belongs to a bright region in a PET image, the mold body material region is a dark region, the gray degree of the region where the radioactive liquid is located and the gray degree of the mold body material region in the CT image are different, the radioactive liquid and the mold body material region can be distinguished according to the gray degree difference, and when the PET image bright region corresponds to the cavity position in the CT image, PET/CT fusion image position calibration is achieved. At present, the PET/CT image fusion position calibration is mainly carried out by adopting a closed PET-CT image fusion position calibration die body pre-filled with a long half-life positron decay radioactive liquid, but the die body has the defects of complex storage system, multiple replacement within the service life of PET/CT equipment and high unit price.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a simple structure, convenient to use, can reduce use cost's PET-CT image fusion position calibration die body.
In order to achieve the above advantages, the utility model provides a PET-CT image fusion position calibration die body, include: the shell, be located columniform main part in the shell, with the upper cover that the shell upper end corresponds, the main part middle part is equipped with first trompil, the main part still is equipped with to be located respectively the main part upper surface the main part lower surface is followed a plurality of guiding gutters, a plurality of guiding gutters down of going up of first trompil radial extension, go up the guiding gutter with be equipped with the second trompil down between the guiding gutter.
In an embodiment of the present invention, the upper cover is provided with a third guiding groove corresponding to the upper guiding groove.
In an embodiment of the present invention, the eccentric position of the upper surface of the main body is provided with a positioning hole, and the upper cover is provided with a positioning column corresponding to the positioning hole.
In an embodiment of the present invention, the upper cover is provided with a limit ring having a diameter larger than the inner diameter of the housing.
In an embodiment of the present invention, the middle of the upper cover is provided with a capillary hole which is coaxial with the first opening.
In an embodiment of the present invention, the upper diversion trench, the lower diversion trench, and the third diversion trench are three diversion trenches with semicircular cross sections.
In an embodiment of the present invention, the first opening is parallel to the second opening, and the second opening is perpendicular to the upper guiding groove and the lower guiding groove, respectively.
In an embodiment of the present invention, the third guiding groove and the upper guiding groove may form a cylindrical guiding hole in combination.
In an embodiment of the present invention, the diameter of the first opening is the same as the diameter of the second opening, and the diameter of the capillary hole is smaller than the first opening and the second opening.
In an embodiment of the present invention, an included angle of 120 ° is formed between the adjacent upper diversion trench and the adjacent lower diversion trench.
In the utility model, through a plurality of openings and a plurality of diversion trenches, the calibration die body can not only conveniently carry out the calibration operation of the fusion position of the PET/CT image, thereby ensuring the calibration quality of the fusion position of the later PET/CT image; and the structure is simple, the use is convenient, the radioactive liquid used in the calibration of the fusion position of the PET/CT image is easy to obtain, the storage is simple, and the use cost can be reduced.
Drawings
Fig. 1 is a schematic structural diagram of a PET-CT image fusion position calibration phantom according to a first embodiment of the present invention.
FIG. 2 is an exploded view of the PET-CT image fusion position calibration phantom of FIG. 1.
FIG. 3 is a schematic structural diagram of an upper cover of the PET-CT image fusion position calibration phantom shown in FIG. 1.
FIG. 4 is a schematic cross-sectional view of the PET-CT image fusion position calibration phantom of FIG. 1.
Fig. 5 is a schematic sectional view of a PET-CT image fusion position calibration phantom according to a second embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the intended purpose of the present invention, the following detailed description will be given with reference to the accompanying drawings and preferred embodiments in order to provide the best mode, structure, features and effects according to the present invention.
Referring to fig. 2 and 3, a PET-CT image fusion position calibration phantom according to a first embodiment of the present invention includes: the shell 1, be located the columniform main part 2 of shell 1, the upper cover 3 that corresponds with 1 upper end of shell, 2 middle parts of main part are equipped with first trompil 21, the coincidence of the central line of first trompil 21 and main part 2, main part 2 still is equipped with and is located 2 upper surfaces of main part along a plurality of guiding gutters 22 on the radial extension of first trompil 21 and is located 2 lower surfaces of main part and a plurality of guiding gutters 23 down that last guiding gutter 22 corresponds, it is equipped with second trompil 24 to go up between guiding gutter 22 and the guiding gutter 23 down. The upper cover 3 is provided with a third guide groove 31 corresponding to the upper guide groove 22. The upper diversion trench 22, the lower diversion trench 23 and the third diversion trench 31 are three diversion trenches with semicircular sections.
The eccentric position of the upper surface of the main body 2 is provided with a positioning hole b, the positioning hole b is positioned between the adjacent pair of upper diversion trenches 22, and the upper cover 3 is provided with a positioning column a corresponding to the positioning hole b. The third guiding groove 31 and the upper guiding groove 22 are combined to form a cylindrical guiding hole, and the positioning column a and the positioning hole b are matched to realize that the upper guiding groove 22 of the main body 2 corresponds to the third guiding groove 31 of the upper cover 3, so that the guiding hole with a cylindrical section is formed.
Referring to fig. 4, the upper cover 3 is provided with a limiting ring 32 having a diameter larger than the inner diameter of the housing 1, and the limiting ring 32 is used for limiting the upper cover 3 from moving into the housing 1. The middle part of the upper cover 3 is provided with a capillary hole 33 which is coaxial with the first opening 21, and the capillary hole 33 can be used for injecting radioactive liquid and also can be used for facilitating the evacuation of air. Capillary 33 is in communication with third channel 31.
The first opening 21 is parallel to the second opening 24, and the second opening 24 is perpendicular to the upper guiding groove 22 and the lower guiding groove 23. The diameter of the first opening 21 is the same as that of the second opening 24, and the diameter of the capillary 33 is smaller than that of the first opening 21 and that of the second opening 24. The included angles of 120 degrees are formed between the adjacent upper guide grooves 22 and between the adjacent lower guide grooves 23.
When in use, the rotation of the main body 2 can be driven by rotating the upper cover 3, so that the second opening 24, the upper diversion trench 22, the lower diversion trench 23 and the third diversion trench 31 deflect, and the radioactive liquid in the second opening 24, the upper diversion trench 22, the lower diversion trench 23 and the third diversion trench 31 indirectly deflects at an angle. Thereby facilitating the calibration of the PET/CT image fusion position. The shell 1, the main body 2 and the upper cover 3 are combined to form a cavity which is positioned in the shell 1 and can contain radioactive liquid.
When the calibration die body is actually used, firstly, a liquid containing radionuclide with the volume required by the volume of the cavity of the calibration die body is prepared in another container, then the prepared radioactive liquid is injected into the cavity from the capillary hole 33 of the calibration die body, and finally, the capillary hole 33 is blocked to seal the cavity.
In the second embodiment of the present invention, the eccentric position of the upper surface of the main body 2 is provided with the positioning column a, and the upper cover 3 is provided with the positioning hole b corresponding to the positioning column a.
Utilize the aforesaid to be according to the utility model discloses a PET/CT image fusion calibration die body, not only can be convenient with the short half-life positron decay radioactive liquid that uses when PET/CT image fusion position calibration pour into this calibration die body and carry out PET/CT image fusion position calibration with the precision that is not less than half of cylindrical trompil cross section linear dimension on the cylindrical main part 2 in the PET-CT image fusion position calibration die body to guarantee later stage PET/CT image fusion position calibration quality.
And the utility model discloses simple structure, low cost and convenient to use, the radioactive material that uses when PET/CT image fusion position is calibrated becomes the radioactive material of liquid by the radioactive material of solid, and radioactive liquid acquires easily, keeps simply, can reduce the use cost of keeping system complexity and user.
In the utility model, through a plurality of openings and a plurality of diversion trenches, the calibration die body can not only conveniently carry out the calibration operation of the fusion position of the PET/CT image, thereby ensuring the calibration quality of the fusion position of the later PET/CT image; and the structure is simple, the use is convenient, the radioactive liquid used in the calibration of the fusion position of the PET/CT image is easy to obtain, the storage is simple, and the use cost can be reduced.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above description, and although the present invention has been disclosed with the preferred embodiment, it is not limited to the present invention, and any skilled person can make modifications or changes equivalent to the above embodiments without departing from the scope of the present invention, but all the modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are within the scope of the present invention.
Claims (10)
1. A PET-CT image fusion position calibration phantom, comprising: the shell, be located columniform main part in the shell, with the upper cover that the shell upper end corresponds, its characterized in that, the main part middle part is equipped with first trompil, the main part still is equipped with and is located respectively the main part upper surface the main part lower surface is followed a plurality of guiding gutters, a plurality of guiding gutters down of going up of first trompil radial extension, go up the guiding gutter with be equipped with the second trompil down between the guiding gutter.
2. The PET-CT image fusion position calibration phantom according to claim 1, wherein the upper cover is provided with third guide grooves corresponding to the upper guide grooves.
3. The PET-CT image fusion position calibration phantom according to claim 1, wherein the eccentric position of the upper surface of the main body is provided with a positioning hole, and the upper cover is provided with a positioning post corresponding to the positioning hole.
4. The PET-CT image fusion position calibration phantom according to claim 1, wherein the upper cover is provided with a limit ring with a diameter larger than the inner diameter of the shell.
5. The PET-CT image fusion position calibration phantom according to claim 1, wherein the middle part of the upper cover is provided with a capillary hole which is coaxial with the first opening.
6. The PET-CT image fusion position calibration phantom according to claim 2, wherein the upper guiding groove, the lower guiding groove and the third guiding groove are all three guiding grooves with semicircular cross sections.
7. The PET-CT image fusion position calibration phantom according to claim 1, wherein the first opening is parallel to the second opening, and the second opening is perpendicular to the upper guiding gutter and the lower guiding gutter respectively.
8. The PET-CT image fusion position calibration phantom according to claim 2, wherein said third guiding grooves and said upper guiding grooves combine to form a cylindrical guiding hole.
9. The PET-CT image fusion position calibration phantom according to claim 5, wherein the first opening and the second opening have the same diameter, and the diameter of the capillary hole is smaller than that of the first opening and the second opening.
10. The PET-CT image fusion position calibration phantom according to claim 1, wherein the adjacent upper channels and the adjacent lower channels are all included at an angle of 120 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281562.9U CN211560131U (en) | 2019-12-18 | 2019-12-18 | PET-CT image fusion position calibration die body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922281562.9U CN211560131U (en) | 2019-12-18 | 2019-12-18 | PET-CT image fusion position calibration die body |
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| Publication Number | Publication Date |
|---|---|
| CN211560131U true CN211560131U (en) | 2020-09-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922281562.9U Expired - Fee Related CN211560131U (en) | 2019-12-18 | 2019-12-18 | PET-CT image fusion position calibration die body |
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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 |
-
2019
- 2019-12-18 CN CN201922281562.9U patent/CN211560131U/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: 20200925 Termination date: 20211218 |
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| CF01 | Termination of patent right due to non-payment of annual fee |