PET-CT gantry and PET-CT system

Abstract

The application provides a PET-CT frame and a PET-CT system. The PET-CT system comprises the PET-CT frame. The PET-CT frame comprises a PET frame and a CT frame. The bottom of the PET frame and the bottom of the CT frame are respectively provided with a height adjusting assembly for adjusting the height of the PET frame and the CT frame respectively. One side of the PET frame along a first direction is provided with a first alignment part, and the other side of the CT frame along the first direction is provided with a second alignment part. The first alignment part and the second alignment part can be inserted and matched along the first direction to form the alignment of the PET frame and the CT frame along the first direction and a second direction. The first direction is the axial direction of the PET-CT frame. The application can replace or upgrade the PET frame or the CT frame alone, without replacing or upgrading the whole PET-CT frame, thereby reducing the replacement and upgrade cost of the PET-CT frame.

Description

Technical Field

[0001] This application belongs to the field of medical device technology, and more specifically, relates to a PET-CT gantry and a PET-CT system. Background Technology

[0002] PET / CT is a scanning imaging technology that integrates PET (Positron Emission Tomograph X) and CT (Computed Tomograph X) into a single system. The fusion of PET and CT refers to image fusion, which couples PET images of lesions detected by the PET detector with CT images of organs and tissues detected by the CT detector. Over long-term use, PET / CT detector performance and X-ray tube lifespan will experience some degradation, while replacing the entire system is costly. Furthermore, in practical designs, it is common to upgrade the functionality of PET or CT separately; upgrading the entire PET / CT system in such cases would increase upgrade costs. Utility Model Content

[0003] The purpose of this application is to provide a PET-CT gantry and a PET-CT system to solve the technical problem of high replacement or upgrade costs for PET / CT in the prior art.

[0004] To achieve the above objectives, the technical solution adopted in this application is as follows: a PET-CT gantry is provided, including a PET gantry and a CT gantry. The bottom of the PET gantry and the bottom of the CT gantry are respectively provided with height adjustment components for adjusting the height of the PET gantry and the CT gantry. The PET gantry is provided with a first alignment member on one side along a first direction, and the CT gantry is provided with a second alignment member on the other side along the first direction. The first alignment member and the second alignment member can be inserted and engaged along the first direction to form alignment of the PET gantry and the CT gantry along the first direction and the second direction, wherein the first direction is the axial direction of the PET-CT gantry, and the first direction and the second direction are perpendicular to each other.

[0005] In some embodiments, the first alignment member includes a first alignment portion disposed on the PET frame and two second alignment portions protruding from the first alignment portion and spaced apart along the second direction; the second alignment member includes a third alignment portion disposed on the CT frame, the third alignment portion being able to be inserted between the two second alignment portions, and the third alignment portion being limited and engaged with the first limiting portion and the second alignment portions.

[0006] In some embodiments, the first gap between the first alignment portion and the third alignment portion along the first direction is less than 1 mm; And / or, the total gap between the two second alignment portions and the third alignment portion along the second direction is less than 1 mm.

[0007] In some embodiments, the number of the first alignment members is multiple, each of the first alignment members is symmetrically distributed relative to the PET frame along the first center plane in the second direction, and each of the first alignment members is symmetrically distributed relative to the PET frame along the second center plane in the vertical direction; The number of the second alignment members is the same as the number of the first alignment members, and each of the second alignment members is inserted into and fitted with each of the first alignment members in a one-to-one correspondence.

[0008] In some embodiments, the height adjustment assembly includes an adjusting member and a locking member. The adjusting member has an external thread, and both the PET gantry and the CT gantry have threaded holes. The adjusting member extends through the threaded holes and protrudes from the bottom end of the threaded holes to abut against an external reference surface. The height of the PET gantry and the CT gantry can be adjusted by rotating the adjusting member. The locking member is threaded onto the adjusting member to lock the PET gantry and the CT gantry.

[0009] In some embodiments, the height adjustment component is provided at each corner of the bottom of the PET frame along the first direction and the second direction; And / or, the height adjustment component is provided at each corner of the bottom of the CT gantry along the first direction and the second direction.

[0010] In some embodiments, the PET gantry is provided with a first fixing member and a first plate, wherein a first cable of the first plate is limited to the first fixing member; the CT gantry is provided with a second fixing member and a second plate, wherein a second cable of the second plate is limited to the second fixing member; The positions of the first fixing member and the second fixing member correspond to each other so that the first cable and the second cable are connected accordingly.

[0011] In some embodiments, the first fastener has multiple rows of first wire groove groups, each row of first wire groove groups including multiple first wire grooves spaced apart along the first direction, and each row of first wire groove groups is used to define a group of first cables. The second fastener has multiple rows of second wire groove groups, each row of second wire groove groups including multiple second wire grooves spaced apart along the first direction, and each row of second wire grooves is used to define a group of second cables.

[0012] In some embodiments, the insertion position of the first cable and the first board is provided with a first foolproof structure; and / or, the insertion position of the second cable and the second board is provided with a second foolproof structure; and / or, the insertion position between the first cable and the second cable is provided with a third foolproof structure.

[0013] Secondly, this application also provides a PET-CT system, including a PET imaging unit and a CT imaging unit. The PET imaging unit includes a PET gantry, a first alignment member, and a height adjustment component for adjusting the height of the PET gantry. The CT imaging unit includes a CT gantry, a second alignment member, and a height adjustment component for adjusting the height of the CT gantry. The first alignment member and the second alignment member can be inserted and engaged along a first direction to form alignment of the PET gantry (100) and the CT gantry along the first and second directions.

[0014] The beneficial effects of the PET-CT gantry and PET-CT system provided in this application are as follows: By setting up a height adjustment component, a first alignment component, and a second alignment component, when the PET gantry or CT gantry needs to be replaced or upgraded, the PET gantry or CT gantry can be replaced or upgraded separately. Then, the replaced or upgraded PET gantry and the original CT gantry are aligned along the first direction, the second direction, and the vertical direction using the height adjustment component, the first alignment component, and the second alignment component, so that the coordinate system of the replaced or upgraded PET gantry can be consistent with the coordinate system of the original CT gantry, thereby achieving image fusion between the PET gantry and the CT gantry. This eliminates the need to replace or upgrade the entire PET-CT gantry, reducing the replacement and upgrade costs of the PET-CT gantry. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a three-dimensional schematic diagram of the PET frame provided in an embodiment of this application. Figure 2 This is a side view of the PET frame provided in an embodiment of this application, perpendicular to the first direction.

[0017] Figure 3 This is a side view of the PET frame provided in an embodiment of this application, perpendicular to the second direction.

[0018] Figure 4This is a side view of the PET frame provided in an embodiment of this application, perpendicular to the vertical direction.

[0019] Figure 5 This is a side view of the CT gantry provided in an embodiment of this application, perpendicular to the first direction.

[0020] Figure 6 This is a side view of the CT gantry provided in an embodiment of this application, perpendicular to the second direction.

[0021] Figure 7 This is a side view of the CT gantry provided in an embodiment of this application, perpendicular to the vertical direction.

[0022] Figure 8 This is an assembly diagram of the first and second alignment components in the PET-CT gantry provided in the embodiments of this application.

[0023] Figure 9 This is a schematic diagram of the assembly of the height adjustment component in the PET-CT gantry provided in the embodiments of this application.

[0024] Figure 10 This is an assembly diagram of the fixture in the PET-CT gantry provided in an embodiment of this application.

[0025] Figure 11 This is a schematic diagram of the assembly of the circuit boards and cables in the PET-CT gantry provided in the embodiments of this application.

[0026] Figure 12 This is a schematic diagram of the structure of the second connector in the PET-CT gantry provided in an embodiment of this application.

[0027] Figure 13 This is a schematic diagram of the outer surface of the PET-CT gantry provided in an embodiment of this application.

[0028] The following are the labeling elements in the figure: 100. PET frame; 110. Threaded hole; 120. Mating part; 121. First locking hole; 130. Mounting part; 200. CT frame; 300. Height adjustment assembly; 310. Adjusting component; 311. Nut; 312. Screw; 320. Locking component; 400. First alignment component; 410. First alignment part; 420. Second alignment part; 430. Slot; 500. Second alignment component; 510. Third alignment part; 520. Fourth alignment part; 601. First fixing component; 610. Back plate; 620. Partition plate; 630. Limiting plate; 631. First groove assembly; 63 11. First cable tray; 602. Second fastener; 701. First board; 710. First interface; 711. Second connector; 720. First board identifier; 702. Second board; 730. Second interface; 801. First cable; 802. Second cable; 810. First connector; 820. First cable identifier; 900. First foolproof structure; 910. Groove; 1000. Housing; 1001. Second locking hole; Z. First direction; X. Second direction; Y. Vertical direction; P1. External reference plane; H1. First gap; H2. Second gap; H3. Third gap. Detailed Implementation

[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] As described in the background section, PET and CT fusion refers to image fusion, which involves coupling PET images of lesions detected by a PET detector with CT images of organs and tissues detected by a CT detector. Image fusion requires that the FOV (Field-of-View) coordinate systems of the CT detector and PET detector be consistent, that is, the origin of the FOV coordinate system of the PET detector coincides with the origin of the FOV coordinate system of the CT detector, and the X, Y, and Z axes of the PET detector's coordinate system are parallel to the X, Y, and Z axes of the CT detector's coordinate system, respectively. Otherwise, the precise location of tumors and other lesions cannot be effectively determined and found.

[0034] Over time, PET / CT scanners experience degradation in detector performance and X-ray tube lifespan. Replacing the entire PET / CT unit would be costly. Furthermore, in practical designs, upgrades to the functionality of PET or CT scanners are frequently required; upgrading the entire PET / CT system in such cases would increase upgrade costs.

[0035] To address the aforementioned technical problems, this application provides a PET-CT gantry and a PET-CT system. By incorporating a height adjustment component 300, a first alignment component 400, and a second alignment component 500, the PET gantry 100 and the CT gantry 200 can be quickly aligned, ensuring that their coordinate systems are consistent. This allows for replacement or upgrades of either the PET gantry 100 or the CT gantry 200 when only one component needs to be replaced or upgraded, while still maintaining coordinate system consistency between the assembled PET gantry 100 and the CT gantry 200. This reduces the replacement and upgrade costs of the PET-CT gantry.

[0036] Please refer to the following: Figures 1 to 7 The PET-CT gantry provided in the embodiments of this application will now be described in detail.

[0037] The PET-CT gantry includes a PET gantry 100 and a CT gantry 200. Height adjustment components 300 are provided at the bottom of both the PET gantry 100 and the CT gantry 200 to adjust their heights respectively. A first alignment member 400 is provided on one side of the PET gantry 100 along a first direction Z, and a second alignment member 500 is provided on the other side of the CT gantry 200 along the first direction Z. The first alignment member 400 and the second alignment member 500 can be inserted and engaged along the first direction Z to align the PET gantry 100 and the CT gantry 200 along the first direction Z and the second direction X. The first direction Z is the axial direction of the PET-CT gantry, and the second direction X is perpendicular to the first direction Z.

[0038] It should be noted that the axial direction of the PET-CT gantry refers to the direction of movement of the scanning bed, which is also the direction from head to toe when the patient is lying on the scanning bed.

[0039] In practical applications, when it is necessary to replace or upgrade either the PET rack 100 or the CT rack 200, for example, if the PET rack 100 needs to be upgraded, the upgraded PET rack 100 can be spliced ​​together with the unupgraded CT rack 200. Specifically, firstly, the height of the PET rack 100 and the CT rack 200 is adjusted by their respective height adjustment components 300, and a precision level is used to measure whether the PET rack 100 and the CT rack 200 are at the same height. Then, the first alignment component 400 and the second alignment component 500 are inserted and mated along the first direction Z to align the PET rack 100 and the CT rack 200 along the first direction Z and the second direction X, ultimately making the FOV coordinate system of the PET rack 100 consistent with the FOV coordinate system of the CT rack 200.

[0040] It should be noted that the PET gantry 100 includes a fixed first frame 101 and a first rotating frame 102 that can rotate relative to the first fixed frame 101. The first rotating frame 102 is annular, and multiple PET detectors are distributed on the inner wall of the first rotating frame 102. The CT gantry 200 includes a fixed second frame 201 and a second rotating frame 202 that can rotate relative to the second fixed frame 201. CT detectors are disposed on the inner wall of the second rotating frame 202.

[0041] The PET-CT gantry in this embodiment of the application, by setting a height adjustment component 300, a first alignment component 400 and a second alignment component 500, allows the PET gantry 100 or CT gantry 200 to be replaced or upgraded individually when they need to be replaced or upgraded. Then, the replaced or upgraded PET gantry 100 is aligned with the original CT gantry 200 along the first direction Z, the second direction X and the vertical direction Y using the height adjustment component 300, the first alignment component 400 and the second alignment component 500. This ensures that the coordinate system of the replaced or upgraded PET gantry 100 is consistent with the coordinate system of the original CT gantry 200, thereby achieving image fusion between the PET gantry 100 and the CT gantry 200. This eliminates the need to replace or upgrade the entire PET-CT gantry, reducing the replacement and upgrade costs of the PET-CT gantry.

[0042] In some embodiments, please refer to Figure 1 , Figure 5 and Figure 8 The first alignment member 400 includes a first alignment portion 410 disposed on the PET frame 100 and two second alignment portions 420 protruding from the first alignment portion 410 and spaced apart along the second direction X; the second alignment member 500 includes a third alignment portion 510 disposed on the CT frame 200, the third alignment portion 510 being insertable between the two second alignment portions 420, and the third alignment portion 510 being mutually restrictive with the first alignment portion 410 and the second alignment portion 420. Specifically, the third alignment portion 510 is mutually restrictive with the second alignment portion 420 along the second direction X, and the third alignment portion 510 is mutually restrictive with the first alignment portion 410 along the first direction Z.

[0043] Specifically, two second alignment portions 420 are spaced apart to form a slot 430, and a third alignment portion 510 is inserted into the slot 430. The third alignment portion 510 is positioned between the two second alignment portions 420 along the second direction X to align the PET frame 100 and the CT frame 200 along the second direction X. Furthermore, when the third alignment portion 510 is fully inserted into the slot 430, the third alignment portion 510 abuts against the first alignment portion 410 along the first direction Z to align the PET frame 100 and the CT frame 200 along the first direction Z.

[0044] In this embodiment, the third alignment part 510 abuts against the second alignment part 420 and the first alignment part 410 respectively to form the alignment of the PET frame 100 and the CT frame 200 along the first direction Z and the second direction X. The structure is simple and can form a structural connection between the two. Understandably, in other embodiments of this application, slots 430 may be formed directly on the PET frame 100 and inserts may be formed on the CT frame 200; or, in other embodiments, the second alignment member 500 includes a first alignment portion 410 attached to the CT frame 200 and two second alignment portions 420 protruding from the first alignment portion 410 and spaced apart along the second direction X; the first alignment member 400 includes a third alignment portion 510 protruding from the PET frame 100, the third alignment portion 510 being able to be inserted between the two second alignment portions 420, the third alignment portion 510 and the second alignment portion 420 being limited to fit along the second direction X, and the third alignment portion 510 and the first alignment portion 410 being limited to fit along the first direction Z, that is, the positions of the first alignment member 400 and the second alignment member 500 are interchanged, which is not a unique limitation here.

[0045] In some embodiments, please refer to Figure 5 and Figure 8 The second alignment member 500 also includes a fourth alignment portion 520, which is attached to one side of the CT gantry 200 along the first direction Z. A third alignment portion 510 protrudes from the side of the fourth alignment portion 520 away from the CT gantry 200, and the opposite sides of the third alignment portion 510 along the second direction X are recessed relative to the opposite sides of the fourth alignment portion 520 along the second direction X. During assembly, the third alignment portion 510 is inserted into the slot 430 formed by the two second alignment portions 420, and the end face of the third alignment portion 510 away from the fourth alignment portion 520 abuts against the first alignment portion 410. The fourth alignment portion 520 stops outside the two second alignment portions 420. Understandably, the fourth alignment part 520 ensures the stability of the insertion of the third alignment part 510 into the slot 430, and the alignment effect and accuracy of the first alignment member 400 and the second alignment member 500 can be ensured by the contact between the third alignment part 510 and the first alignment part 410 along the first direction Z and / or the contact between the fourth alignment part 520 and the second alignment part 420 along the first direction Z.

[0046] Optionally, the first gap H1 between the first alignment portion 410 and the third alignment portion 510 along the first direction Z is less than 1 mm. For example, the first gap H1 can be 0 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm, etc. Specifically, the third alignment portion 510 is inserted into the slot 430 formed by the two second alignment portions 420. When the length of the third alignment portion 510 along the first direction Z is greater than the length of the second alignment portion 420 along the first direction Z, the third alignment portion 510 can be inserted into the slot 430 and abut against the first alignment portion 410. At this time, there is no gap between the third alignment portion 510 and the first alignment portion 410, and the alignment effect is the best. When the length of the third alignment portion 510 along the first direction Z is less than the length of the second alignment portion 420 along the first direction Z, the third alignment portion 510 can be inserted into the slot 430 and has a first gap H1 with the first alignment portion 410. This first gap H1 is less than 1 mm, which ensures the alignment accuracy of the first alignment member 400 and the second alignment member 500 along the first direction Z. Furthermore, when the third alignment portion 510 and the first alignment portion 410 have the first gap H1, the fourth alignment portion 520 abuts against the second alignment portion 420 along the first direction Z, which also ensures the alignment accuracy of the first alignment member 400 and the second alignment member 500 along the first direction Z.

[0047] Optionally, please refer to Figure 8 The total gap between the two second alignment portions 420 and the third alignment portion 510 along the second direction X is less than 1 mm. For example, the total gap between the two second alignment portions 420 and the third alignment portion 510 along the second direction X can be 0 mm, 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, or 1 mm, etc. Specifically, when the third alignment portion 510 is inserted between the two second alignment portions 420, the third alignment portion 510 has a second gap H2 with one of the second alignment portions 420, and a third gap H3 with the other second alignment portion 420. The total gap between the second gap H2 and the third gap H3 is less than 1 mm. By limiting the total gap between the two second alignment portions 420 and the third alignment portion 510, the alignment accuracy of the first alignment member 400 and the second alignment member 500 along the second direction X can be guaranteed.

[0048] Optionally, the first gap H1 between the first alignment portion 410 and the third alignment portion 510 along the first direction Z is less than 1 mm, and the first gap H1 between the first alignment portion 410 and the third alignment portion 510 along the first direction Z is less than 1 mm.

[0049] Optionally, please refer to Figure 1The first alignment portion 410 and the two second alignment portions 420 are both block-shaped, and the two second alignment portions 420 and the first alignment portion 410 are integrally formed. It is understood that in other embodiments, the first alignment portion 410 and the second alignment portion 420 can also be other shapes, as long as the inner wall surface of the slot 430 corresponding to the first alignment portion 410 is a plane perpendicular to the first direction Z, and the inner wall surface of the slot 430 corresponding to the second alignment portion 420 is a plane perpendicular to the second direction X. Furthermore, in other embodiments, the first alignment portion 410 and the second alignment portion 420 may not be integrally formed, but rather connected as one piece by bonding, welding, or screw fastening, etc., which is not a unique limitation here.

[0050] Optionally, the first alignment part 410 is installed on the PET frame 100 by means of adhesive, welding, snap-fit ​​or screw locking.

[0051] Optionally, please refer to Figure 5 Both the third alignment portion 510 and the fourth alignment portion 520 are block-shaped and are integrally formed. Understandably, in other embodiments, the third alignment portion 510 and the fourth alignment portion 520 can also have other shapes, as long as the surface of the third alignment portion 510 facing the first alignment portion 410 along the first direction Z is a plane perpendicular to the first direction Z, the two surfaces of the third alignment portion 510 along the second direction X are planes perpendicular to the second direction X, and the surface of the fourth alignment portion 520 facing the second alignment portion 420 is a plane perpendicular to the first direction Z. Furthermore, in other embodiments, the third alignment portion 510 and the fourth alignment portion 520 may not be integrally formed, but rather connected as one piece by bonding, welding, or screw fastening, etc., which is not a unique limitation here.

[0052] Optionally, the fourth alignment part 520 is installed on the CT gantry 200 by means of adhesive, welding, snap-fit ​​or screw locking.

[0053] In some embodiments, please refer to Figure 1 , Figure 2 , Figure 5 and Figure 6There are multiple first alignment members 400, each first alignment member 400 being symmetrically distributed relative to the first center plane of the PET frame 100 along the second direction X, and each first alignment member 400 being symmetrically distributed relative to the second center plane of the PET frame 100 along the vertical direction Y. The number of second alignment members 500 is the same as the number of first alignment members 400, and each second alignment member 500 is inserted into and fitted with each first alignment member 400 in a one-to-one correspondence. Since both the PET frame 100 and the CT frame 200 are structures with large dimensions along the second direction X and the vertical direction Y, if only one first alignment member 400 and one second alignment member 500 are provided, it may cause the PET frame 100 and the CT frame 200 to tilt during alignment. The above-described arrangement of multiple first alignment members 400 and multiple second alignment members 500 in this embodiment ensures that each first alignment member 400 can guarantee the alignment stability of the PET frame 100 and the CT frame 200 along the second direction X and the vertical direction Y, thus preventing the PET frame 100 and the CT frame 200 from tilting during alignment.

[0054] Optionally, there are four first alignment members 400, which are distributed in a matrix along the second direction X and the vertical direction Y. The four first alignment members 400 are respectively positioned in the four quadrants of the coordinate system of the PET frame 100 to ensure the alignment stability of the PET frame 100 and the CT frame 200. It is understood that in other embodiments of this application, the number of first alignment members 400 may also be two. The two first alignment members 400 are symmetrically distributed along the second direction X relative to the first center plane, and both first alignment members 400 extend along the vertical direction Y and cross the second center plane. By increasing the size of the first alignment members 400 along the vertical direction Y, the alignment stability of the PET frame 100 and the CT frame 200 is ensured. Alternatively, in other embodiments, the number of first alignment members 400 and second alignment members 500 may also be four or more, such as six or eight, etc., without limitation.

[0055] Optionally, the four first alignment members 400 are positioned near the four corners of the PET frame 100.

[0056] In some embodiments, please refer to Figure 9 The height adjustment assembly 300 includes an adjusting member 310 and a locking member 320. The adjusting member 310 has an external thread. Both the PET frame 100 and the CT frame 200 have threaded holes 110. The adjusting member 310 passes through the threaded hole 110 and extends from the bottom end of the threaded hole 110 to abut against the external reference surface P1. The height of the PET frame 100 and the CT frame 200 can be adjusted by rotating the adjusting member 310. The locking member 320 is threaded onto the adjusting member 310 to lock the PET frame 100 and the CT frame 200.

[0057] The external reference surface P1 can be the ground or other flat work surface. The height adjustment methods of the PET frame 100 and the CT frame 200 are the same, and the following description uses the PET frame 100 as an example. The top of the adjusting member 310 has a nut 311, the adjusting member 310 passes through the threaded hole 110, and the bottom end of the adjusting member 310 abuts against the external reference surface P1. The adjusting member 310 and the threaded hole 110 are threadedly connected. When the adjusting member 310 is rotated through the nut 311, since the position of the adjusting member 310 remains unchanged, the PET frame 100 can be raised or lowered through the threaded connection to adjust the height of the PET frame 100. In addition, the locking member 320 is sleeved on the adjusting member 310. The locking member 320 is located between the nut 311 and the PET frame 100. After the position of the PET frame 100 is adjusted, the locking member 320 can be rotated to make the locking member 320 abut against the PET frame 100 to lock the PET frame 100 at the current height position.

[0058] Optionally, the adjusting member 310 includes a nut 311 and a screw 312. The nut 311 is located at the top of the screw 312, and the screw 312 is threadedly engaged with the PET frame 100. The bottom end of the screw 312 abuts against the external reference surface P1. A locking member 320 is sleeved on the screw 312 and is located between the nut 311 and the PET frame 100.

[0059] Optionally, please refer to Figure 1 and Figure 9 The PET frame 100 has mounting portions 130 extending outward from the bottom on both sides along the second direction X, and the height adjustment assembly 300 is mounted on the mounting portions 130.

[0060] Optionally, please refer to Figure 4 The bottom of the PET frame 100 is equipped with height adjustment components 300 at each corner along the first direction Z and the second direction X. By providing height adjustment components 300 at each corner of the PET frame 100, it is ensured that all positions of the PET frame 100 are at the same horizontal level during height adjustment. In specific operation, a precision level can be used to check the horizontality of the PET frame 100 along the first direction Z and the second direction X to ensure smooth raising and lowering of the PET frame 100, thereby ensuring the alignment of the assembled PET frame 100 and the CT frame 200 along the vertical direction Y.

[0061] Optionally, a height adjustment component 300 is provided at each corner of the bottom of the CT gantry 200 along the first direction Z and the second direction X. By providing a height adjustment component 300 at each corner of the CT gantry 200, it can be ensured that all positions of the CT gantry 200 are at the same horizontal level when adjusting the height.

[0062] Optionally, the bottom of the PET frame 100 is provided with height adjustment components 300 at each corner along the first direction Z and the second direction X, and the bottom of the CT frame 200 is provided with height adjustment components 300 at each corner along the first direction Z and the second direction X.

[0063] Optionally, the bottom surface of the PET rack 100 is generally elongated, and each of the four corners of the PET rack 100 is provided with a height adjustment component 300. Similarly, the bottom surface of the CT rack 200 is generally elongated, and each of the four corners of the CT rack 200 is provided with a height adjustment component 300. Understandably, in other embodiments, the bottom surface shape of the PET rack 100 and the CT rack 200 can be determined according to actual design requirements, such as being elliptical or oblong. Furthermore, when the horizontal area of ​​the height adjustment component 300 is large, the number of height adjustment components 300 in the PET rack 100 can be one, two, three, etc., and is not limited here.

[0064] In other embodiments of this application, the height adjustment component 300 may also be of other types, such as a ball screw structure, a screw and nut structure, an expansion bolt, etc.

[0065] In some embodiments, please refer to Figure 1 , Figure 3 , Figure 5 and Figure 7 The PET frame 100 is provided with a first fixing member 601 and a first plate 701, and the first cable 801 of the first plate 701 is limited to the first fixing member 601; the CT frame 200 is provided with a second fixing member 602 and a second plate 702, and the second cable 802 of the second plate 702 is limited to the second fixing member 602; the positions of the first fixing member 601 and the second fixing member 602 correspond to each other so that the first cable 801 and the second cable 802 are connected accordingly.

[0066] The corresponding positions of the first fixing member 601 and the second fixing member 602 mean that the first fixing member 601 and the second fixing member 602 are respectively located at the same positions on the PET frame 100 and the CT frame 200, for example... Figure 2 and Figure 3 In this configuration, the first fixing member 601 and the second fixing member 602 are respectively located on the same side of the PET frame 100 and the CT frame 200 along the second direction X, and have the same height, so that the positions of the first cable 801 and the second cable 802 leading out from the first fixing member 601 and the second fixing member 602 correspond to each other, and the assembly can be directly plugged in.

[0067] In some embodiments, please refer to Figure 10The first fixing member 601 has multiple rows of first wire groove groups 631, each row of first wire groove groups 631 including multiple first wire grooves 6311 distributed at intervals along the first direction Z, and each row of first wire groove groups 631 is used to define a group of first cables 801; the second fixing member 602 has multiple rows of second wire groove groups, each row of second wire groove groups including multiple second wire grooves distributed at intervals along the first direction Z, and each row of second wire groove groups is used to define a group of second cables 802. The arrangement of multiple rows of first wire groove groups 631 and multiple rows of second wire groove groups allows each first cable 801 and each second cable 802 to be divided into multiple groups for separate definition, enabling orderly definition of each first cable 801 and each second cable 802, thereby accelerating the connection efficiency of the first cables 801 and the second cables 802, while avoiding the first cables 801 and each second cable 802 from becoming disorderly. In addition, each row of first cable trays 631 includes multiple first cable trays 6311 spaced apart along the first direction Z, so that the same group of first cables 801 can be neatly arranged along the first direction Z through multiple first cable trays 6311.

[0068] Optionally, each of the first grooves 6311 is distributed at intervals along the first direction Z.

[0069] Optionally, please refer to Figure 10 The first fixing member 601 and the second fixing member 602 have the same structure. The following is a detailed description of the first fixing member 601 as an example. The first fixing member 601 includes a back plate 610, a plurality of partitions 620 and a plurality of limiting plates 630. The back plate 610 is attached to one side of the PET frame 100 along the second direction X. Each partition 620 is perpendicularly connected to the back plate 610. The partitions 620 are distributed sequentially at intervals along the vertical direction Y. Between each two adjacent partitions 620, there are a plurality of limiting plates 630 arranged sequentially at intervals along the first direction Z. The limiting plates 630 are perpendicularly connected to the back plate 610 and the partitions 620 respectively. Each limiting plate 630 has a groove formed inward on the side away from the back plate 610.

[0070] In some embodiments, please refer to Figure 11The first board 701 has multiple first interfaces 710, and the positions of each first interface 710 are marked with a first board identifier 720. Each first cable 801 also has a first cable identifier 820 at both ends. The first cable identifier 820 of each first cable 801 corresponds one-to-one with the first board identifier 720 of each first interface 710. The second board 702 has multiple second interfaces 730, and the positions of each second interface 730 are marked with a second board identifier. Each second cable 802 also has a second cable identifier at both ends. The second cable identifier of each second cable 802 corresponds one-to-one with the second board identifier of each second interface 730. The first cable identifier 820 of each first cable 801 of the PET frame 100 corresponds one-to-one with the second cable identifier of each second cable 802 of the CT frame 200. During actual assembly, the first end of each first cable 801 can be connected to each first interface 710 according to the markings, the third end of each second cable 802 can be connected to each second interface 730, and finally the second end of each first cable 801 and the fourth end of each second cable 802 can be connected. The markings ensure quick connection of the first cables 801 and second cables 802 while preventing wiring errors.

[0071] In some embodiments, please refer to Figure 11 and Figure 12 The first cable 801 and the first board 701 are provided with a first foolproof structure 900 at their insertion positions; the second cable 802 and the second board 702 are provided with a second foolproof structure at their insertion positions; and a third foolproof structure is also provided at the insertion position between the first cable 801 and the second cable 802. Taking the connection between the first cable 801 and the first board 701 as an example, the first cable 801 has a first connector 810, and the first board 701 has a second connector 711 at the position corresponding to the first interface 710. The first connector 810 and the second connector 711 are coaxially inserted. The design of the first foolproof structure 900 ensures that the first connector 810 and the second connector 711 can be quickly aligned, thereby improving the connection efficiency and accuracy of the first connector 810 and the second connector 711. Furthermore, the design principles of the second and third foolproof structures are similar to those of the first foolproof structure 900. Understandably, in other embodiments, a first foolproof structure 900, a second foolproof structure, or a third foolproof structure may also be provided, or a first foolproof structure 900 and a second foolproof structure may be provided, or a second foolproof structure and a third foolproof structure may be provided, or a first foolproof structure 900 and a third foolproof structure may be provided.

[0072] Optionally, the first foolproof structure 900 includes a protrusion on the first connector 810 and a groove 910 on the second connector 711; or, the first foolproof structure 900 includes a groove on the first connector 810 and a protrusion on the second connector 711.

[0073] In some embodiments, please refer to Figure 2 , Figure 6 and Figure 13 The PET-CT gantry also includes a housing 1000, which is fitted over the PET gantry 100 and the CT gantry 200. The PET gantry 100 and the CT gantry 200 are provided with mating parts 120 on opposite sides along the second direction X. The housing 1000 is provided with mating holes (not shown) corresponding to the mating parts 120. The two mating parts 120 are respectively inserted into the two mating holes and locked together by fasteners.

[0074] Optionally, the mating part 120 is provided with a plurality of first locking holes 121, and the outer shell 1000 is provided with a plurality of second locking holes 1001 at the position corresponding to the mating part 120, with each first locking hole 121 and each second locking hole 1001 being provided in a one-to-one correspondence.

[0075] Optionally, the mating part 120 has first locking holes 121 distributed at its four corners along the first direction Z and the vertical direction Y. The outer shell 1000 has a plurality of second locking holes 1001 at the positions corresponding to the mating part 120. Each first locking hole 121 and each second locking hole 1001 are provided in a one-to-one correspondence to ensure the fit between the PET frame 100 and the CT frame 200 and the outer shell 1000, respectively.

[0076] Secondly, this application also provides a PET-CT system, including a PET imaging unit 1 and a CT imaging unit 2. The PET imaging unit 1 includes a PET gantry 100, a first alignment member 400, and a height adjustment assembly 300 for adjusting the height of the PET gantry 100. The CT imaging unit 2 includes a CT gantry 200, a second alignment member 500, and a height adjustment assembly 300 for adjusting the height of the CT gantry 200. The first alignment member 400 and the second alignment member 500 can be inserted and engaged along a first direction Z to align the PET gantry 100 and the CT gantry 200 along the first direction Z and the second direction X. The PET-CT system of this application, through the aforementioned PET-CT gantry configuration, achieves low upgrade costs for the PET-CT system.

[0077] It should be noted that upgrading either PET imaging unit 1 or CT imaging unit 2 requires upgrading both the hardware and software. Specifically, when replacing PET imaging unit 1 or CT imaging unit 2, the system provides a corresponding model replacement backup function. This allows for different file backups by selecting either PET imaging unit 1 or CT imaging unit 2. After the replacement, the software for different PET imaging units 1 and CT imaging units 2 can be configured in the service interface. For example, if CT1 is replaced with CT2, the model replacement backup function is executed before the replacement. The system automatically backs up the relevant user configuration data of CT1 and stores it in the PET1-related device. The system also provides a model replacement restore function. After the replacement, this function is executed, and the backed-up CT1 data is selected for restoration. The system will automatically restore the CT1-related data (such as patient data, user configurations, etc.).

[0078] In addition, it should be noted that this application aims to protect the assembly of the hardware structure during the upgrade of PET imaging unit 1 or CT imaging unit 2. The software upgrade is not the subject of this application, and the above-mentioned software upgrade method is an existing software upgrade method.

[0079] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A PET-CT gantry, characterized in that, The device includes a PET gantry (100) and a CT gantry (200). The bottom of the PET gantry (100) and the bottom of the CT gantry (200) are respectively provided with height adjustment components (300) for adjusting the height of the PET gantry (100) and the CT gantry (200). The PET gantry (100) is provided with a first alignment member (400) on one side along a first direction (Z), and the CT gantry (200) is provided with a second alignment member (500) on the other side along the first direction (Z). The first alignment member (400) and the second alignment member (500) can be inserted and engaged along the first direction (Z) to form alignment of the PET gantry (100) and the CT gantry (200) along the first direction (Z) and the second direction (X). The first direction (Z) is the axial direction of the PET-CT gantry (200), and the first direction (Z) and the second direction (X) are perpendicular to each other.

2. The PET-CT gantry as described in claim 1, characterized in that, The first alignment member (400) includes a first alignment portion (410) disposed on the PET frame (100) and two second alignment portions (420) protruding from the first alignment portion (410) and spaced apart along the second direction (X); the second alignment member (500) includes a third alignment portion (510) disposed on the CT frame (200), the third alignment portion (510) being able to be inserted between the two second alignment portions (420), and the third alignment portion (510) being in a limiting fit with the first alignment portion (410) and the second alignment portions (420).

3. The PET-CT gantry as described in claim 2, characterized in that, The first gap (H1) between the first alignment portion (410) and the third alignment portion (510) along the first direction (Z) is less than 1 mm; And / or, the total gap between the two second alignment portions (420) and the third alignment portion (510) along the second direction (X) is less than 1 mm.

4. The PET-CT gantry as described in claim 1, characterized in that, The number of the first alignment members (400) is multiple, and each of the first alignment members (400) is symmetrically distributed with respect to the first center plane of the PET frame (100) along the second direction (X), and each of the first alignment members (400) is symmetrically distributed with respect to the second center plane of the PET frame (100) along the vertical direction (Y); The number of the second alignment member (500) is the same as the number of the first alignment member (400), and each of the second alignment member (500) and each of the first alignment member (400) are inserted and connected in a one-to-one correspondence.

5. The PET-CT gantry as described in any one of claims 1 to 4, characterized in that, The height adjustment assembly (300) includes an adjusting member (310) and a locking member (320). The adjusting member (310) has an external thread. Both the PET frame (100) and the CT frame (200) have threaded holes (110). The adjusting member (310) passes through the threaded hole (110) and extends from the bottom end of the threaded hole (110) to abut against an external reference surface (P1). The height of the PET frame (100) and the CT frame (200) can be adjusted by rotating the adjusting member (310). The locking member (320) is threaded onto the adjusting member (310) to lock the PET frame (100) and the CT frame (200).

6. The PET-CT gantry as described in any one of claims 1 to 4, characterized in that, The bottom of the PET frame (100) is provided with height adjustment components (300) at each corner along the first direction (Z) and the second direction (X); And / or, the height adjustment component (300) is provided at each corner of the bottom of the CT gantry (200) along the first direction (Z) and the second direction (X).

7. The PET-CT gantry as described in any one of claims 1 to 4, characterized in that, The PET frame (100) is provided with a first fixing member (601) and a first plate (701), and a first cable (801) of the first plate (701) is limited to the first fixing member (601); the CT frame (200) is provided with a second fixing member (602) and a second plate (702), and a second cable (802) of the second plate (702) is limited to the second fixing member (602); The positions of the first fixing member (601) and the second fixing member (602) are corresponding so that the first cable (801) and the second cable (802) are connected accordingly.

8. The PET-CT gantry as described in claim 7, characterized in that, The first fastener (601) has multiple rows of first wire groove groups (631), each row of first wire groove groups (631) includes multiple first wire grooves (6311) spaced apart along the first direction (Z), and each row of first wire groove groups (631) is used to define a group of first cables (801); The second fastener (602) has multiple rows of second wire groove groups, each row of second wire groove groups including multiple second wire grooves spaced apart along the first direction (Z), each row of second wire groove groups is used to define a set of second cables (802).

9. The PET-CT gantry as described in claim 7, characterized in that, The first cable (801) and the first board (701) are provided with a first foolproof structure (900) at their insertion positions; and / or, the second cable (802) and the second board (702) are provided with a second foolproof structure at their insertion positions; and / or, the first cable (801) and the second cable (802) are provided with a third foolproof structure at their insertion positions.

10. A PET-CT system, characterized in that, The device includes a PET imaging unit and a CT imaging unit. The PET imaging unit includes a PET gantry (100) as described in any one of claims 1 to 9, a first alignment member (400), and a height adjustment assembly (300) for adjusting the height of the PET gantry (100). The CT imaging unit includes a CT gantry (200) as described in any one of claims 1 to 9, a second alignment member (500), and a height adjustment assembly (300) for adjusting the height of the CT gantry (200). The first alignment member (400) and the second alignment member (500) are capable of being inserted and engaged along the first direction (Z) to form alignment of the PET gantry (100) and the CT gantry (200) along the first direction (Z) and the second direction (X).

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