Aperture-adjustable scanning device for multiple scenes

Abstract

The invention relates to the technical field of medical imaging equipment, in particular to an aperture-adjustable scanning device for multiple scenes, which comprises a scanning frame, a scanning base arranged on the scanning frame and a plurality of detector units arranged on the scanning base. The scanning base is an annular structural member, the multiple detector units are arranged at intervals in the circumferential direction of the scanning base, and the detector units can move close to / away from the axis of the scanning base in the radial direction of the scanning base to form a scanning detection ring. The detector unit can be selectively close to or far away from the axis of the scanning base in the radial direction of the scanning base to form different types of scanning rings so as to adapt to scanning of different scenes, the detector unit can make contact with a scanned object at a closer distance during detection, the image sensitivity is improved, and one device can be used for multiple scenes; the device is suitable for a plurality of scanning objects, is wide in application range, and saves the cost and the space of a scanning room by replacing a plurality of previous devices with one device for customers who are not high in device use frequency.

Description

Technical Field

[0001] The present invention relates to the technical field of medical imaging equipment, and in particular to a scanning device for multiple scenes with adjustable aperture. Background Art

[0002] Positron emission computed tomography (PET) is a nuclear medicine imaging technique that uses the distribution of radioactive drugs in the body to reflect the physiological function and metabolism of organs or tissues.

[0003] Since the advent of PET products, after continuous development and innovation, many types of PET products have been formed to meet different needs. In addition to the conventional large-aperture scanning devices used for ordinary adult examinations, in order to ensure the effectiveness of use by different groups, there are PET scanning devices for children, PET scanning devices for the brain, PET scanning devices for small animals for drug trials, or PET scanning devices for large animals on the market. At present, each type can only be used in one applicable environment. Moreover, as a product user, if the hospital has multiple needs, it will need to purchase multiple types of PET products, which will lead to high costs for medical equipment and large floor space. Summary of the invention

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a scanning device with adjustable aperture for use in multiple scenarios, which solves the technical problem that if a hospital, as a product user, has multiple needs, it needs to purchase multiple types of PET products, which in turn leads to high costs of medical equipment and large floor space.

[0005] In order to achieve the above object, the main technical solutions adopted by the present invention include:

[0006] An embodiment of the present invention provides a scanning device for multiple scenes with adjustable aperture, comprising a scanning frame, a scanning base arranged on the scanning frame, and a plurality of detector units arranged on the scanning base;

[0007] The scanning base is an annular structure, and a plurality of detector units are arranged at intervals along the circumference of the scanning base. The detector units can selectively move toward or away from the axis of the scanning base along the radial direction of the scanning base to form a scanning detection ring.

[0008] Optionally, the scanning detection ring is a closed detection ring.

[0009] Optionally, the number of the detector units is 24.

[0010] Optionally, when the scanning detection ring is scanning scene one, the 24 detector units are at the same radial position on the scanning base and form a closed detection ring one, and all the detector units are in working state.

[0011] Optionally, when the scanning detection ring is scanning scene two, the 12 detector units are at the same radial position on the scanning base to form a closed detection ring two, wherein the 12 detector units forming the closed detection ring two are close to the axis of the scanning base, and adjacent detector units are spaced apart, and the 12 detector units close to the axis of the scanning base are in working state.

[0012] Optionally, when the scanning detection ring is scanning scene three, the eight detector units are at the same radial position on the scanning base to form detection ring three, wherein the eight detector units forming the detection ring three are close to the axis of the scanning base, and adjacent detector units are spaced apart, and the eight detector units close to the axis of the scanning base are in working state.

[0013] Optionally, when the scanning detection ring is scanning scene four, the six detector units are at the same radial position on the scanning base to form a detection ring four, wherein the six detector units forming the detection ring four are close to the axis of the scanning base, and adjacent detector units are spaced apart, and the six detector units close to the axis of the scanning base are in a working state.

[0014] Optionally, the detector unit comprises a sliding mounting mechanism fixedly mounted on the scanning base and a detector body slidably mounted on the sliding mounting mechanism;

[0015] The sliding installation mechanism includes a connecting seat, a connecting slider, a lead screw, a guide rail, a coupling and a motor;

[0016] The connecting seat is fixedly installed along the radial direction of the scanning base, the guide rail is arranged along the longitudinal direction of the connecting seat, the motor and the coupling are fixedly arranged on the connecting seat, the output end of the motor is connected to the lead screw through the coupling, the connecting slider is sleeved on the lead screw, and the connecting slider is threadedly connected to the lead screw, the rotation of the motor can drive the connecting slider to reciprocate linearly along the axial direction of the lead screw, and the detector body is installed on the connecting slider.

[0017] Optionally, the connecting base includes two mounting baffles that are perpendicular to the scanning base and arranged parallel to each other, and a connecting plate arranged between the two mounting baffles, the connecting plate abuts against the scanning base and is detachably connected through a locking member, and a receiving space that can accommodate the lead screw, the coupling and the motor is formed between the connecting plate and the two mounting baffles.

[0018] Optionally, the scanning frame is a U-shaped structure with an opening facing upward;

[0019] Two ends of the scanning base extend outwardly in the radial direction to form an integrally formed extension plate, and the extension plate can be detachably mounted on the scanning frame.

[0020] The beneficial effects of the present invention are as follows: a scanning device with adjustable aperture and used in multiple scenes of the present invention can selectively enable the detector unit to form different types of scanning rings close to or away from the axis of the scanning base along the radial direction of the scanning base to adapt to the scanning of different scenes, so that the detector unit can be in closer contact with the scanning object during detection, thereby improving the image sensitivity. One device can be used in multiple scenes and adapt to multiple scanning objects, with a wide range of applications. For customers who do not use the equipment frequently, one device can replace multiple devices as before, saving costs and scanning room space. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of scanning scene 1 of the scanning device for multiple scenes with adjustable aperture of the present invention;

[0022] Figure 2 It is a schematic diagram of the three-dimensional structure of scanning scene 2 of the scanning device for multiple scenes with adjustable aperture according to the present invention;

[0023] Figure 3 It is a schematic diagram of the three-dimensional structure of the scanning scene 3 of the scanning device for multiple scenes with adjustable aperture of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional structure of a scanning scene 4 of the scanning device for multiple scenes with adjustable aperture according to the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional structure of any detector unit of the scanning device for multiple scenes with adjustable aperture of the present invention.

[0026] Description of Reference Numerals

[0027] 1: Scanning frame; 2: Scanning base; 21: Extension plate;

[0028] 3: detector unit; 31: sliding mounting mechanism; 311: connecting seat; 3111: mounting baffle; 3112: connecting plate; 312: connecting slider; 313: lead screw; 314: guide rail; 315: coupling; 316: motor;

[0029] 32: detector body;

[0030] 4: Detection ring one;

[0031] 5: Detection ring 2;

[0032] 6: Detection ring three;

[0033] 7: Detect ring four. DETAILED DESCRIPTION

[0034] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific implementation methods. Before introducing the embodiments, it should be clear that although a scanning device with a large aperture can also scan a smaller part, the current detection unit is generally a plurality of detectors fixed on a scanning base and arranged in a circular ring. As a result, when the aperture is larger than the part to be measured, the distance between the detector and the part to be measured is far, thereby affecting the imaging quality of the image. For this reason, different scanning devices are required for scanning ordinary adults, brains, children or small animals. In this embodiment, a PET scanning device is used as an example. Of course, it is not limited to a PET scanning device, but can also be a photon SPECT scanning device.

[0035] Embodiment 1:

[0036] See also Figure 1 As shown, an embodiment of the present invention proposes a scanning device for multiple scenes with adjustable aperture, including a scanning device for multiple scenes with adjustable aperture, including a scanning frame 1, a scanning base 2 arranged on the scanning frame 1, and a plurality of detector units 3 arranged on the scanning base 2.

[0037] In this embodiment, the scanning base 2 is an annular structure, and multiple detector units 3 are arranged at intervals along the circumference of the scanning base 2. The detector units 3 can selectively move toward / away from the axis of the scanning base 2 along the radial direction of the scanning base 2 to form a scanning detection ring that matches the object to be measured.

[0038] Furthermore, when the scanning detection ring is scanning scene 1, the 24 detector units 3 have the same radial position on the scanning base 2 and form a closed detection ring 1 4, and the 24 detector units 3 are all in working state. It should be noted that the scanning scene in this embodiment is: an ordinary adult scanning scene.

[0039] Furthermore, the number of detector units 3 is 24, and the scanning detection ring is a closed detection ring. In order to ensure the image quality, the arrangement of the detection crystals in the detector unit 3 should be sufficiently small along the axial gap and the circumferential gap. In this embodiment, when a larger diameter is required to scan the body of an ordinary adult, the detector unit 3 is also in a closed detection ring state of 4, that is, the image quality is improved to make the image quality better.

[0040] Embodiment 2:

[0041] See also Figure 2 As shown, a scanning device for multiple scenes with adjustable aperture provided in an embodiment of the present invention includes a scanning device for multiple scenes with adjustable aperture, including a scanning frame 1, a scanning base 2 arranged on the scanning frame 1, and a plurality of detector units 3 arranged on the scanning base 2. The scanning base 2 is an annular structure, and the plurality of detector units 3 are arranged at intervals along the circumference of the scanning base 2. The detector units 3 can selectively move toward / away from the axis of the scanning base 2 in the radial direction of the scanning base 2 to form a scanning detection ring that matches the object to be measured.

[0042] Furthermore, when the scanning detection ring is scanning scene two, the 12 detector units 3 are at the same radial position on the scanning base 2 to form a closed detection ring 2 5, wherein the 12 detector units 3 forming the closed detection ring 2 5 are close to the axis of the scanning base 2, and adjacent detector units 3 are spaced apart, the 12 detector units 3 close to the axis of the scanning base 2 are in working state, and the other 12 are standby state detector units.

[0043] It should be noted that the scanning scene in this embodiment is a children's scanning scene.

[0044] Furthermore, the number of detector units 3 is 24. At this time, switching to Figure 2 state, at this time, 12 detector units 3 are in standby state, and 12 detector units 3 are in working state. And there is one detector unit 3 between two adjacent detector units 3 in working state, and the 12 detector units 3 form a scanning detection ring which is a closed detection ring 2 5. The detection ring 2 5 is used to scan children. In order to ensure the image quality, the arrangement of the detection crystals in the detector unit 3 along the axial gap and the circumferential gap must be small enough. In this embodiment, when scanning the child's body that requires a generally large diameter, the detector unit 3 is also in the state of the closed detection ring 1, that is, the image quality is improved to make the image quality better.

[0045] Embodiment 3:

[0046] See also Figure 3As shown, a scanning device for multiple scenes with adjustable aperture provided in an embodiment of the present invention includes a scanning device for multiple scenes with adjustable aperture, including a scanning frame 1, a scanning base 2 arranged on the scanning frame 1, and a plurality of detector units 3 arranged on the scanning base 2. The scanning base 2 is an annular structure, and the plurality of detector units 3 are arranged at intervals along the circumference of the scanning base 2, and the detector units 3 can selectively move toward / away from the axis of the scanning base 2 along the radial direction of the scanning base 2 to form a scanning detection ring.

[0047] Further, when the scanning detection ring is scanning scene three, the eight detector units 3 are at the same radial position on the scanning base 2 to form a detection ring three 6, wherein the eight detector units 3 forming the detection ring three 6 are close to the axis of the scanning base 2, and adjacent detector units 3 are spaced apart, and the eight detector units 3 close to the axis of the scanning base 2 are in a working state.

[0048] It should be noted that the scanning scene in this embodiment is a head scanning scene.

[0049] Furthermore, the number of detector units 3 is 24. At this time, switching to Figure 3 state, at this time, 16 detector units 3 are in standby state, and 8 detector units 3 are in working state. And there are two detector units 3 between two adjacent detector units 3 in working state, and the eight detector units 3 form a scanning detection ring as a closed detection ring three 6. The scanning detection ring is a closed detection ring. In order to ensure the image quality, the arrangement of the detection crystals in the detector unit 3 must be small enough along the axial gap and the circumferential gap. In this embodiment, when scanning the human head or the animal head requires a generally small diameter, the detector unit 3 is also in the state of the closed detection ring three 6, that is, the image quality is improved to make the image quality better.

[0050] Here, it is also necessary to explain that: since the diameter of the scene is small, the number of detector units 3 in working state is 8, and the number of detector units 3 is 24, that is, the proportion of detector units 3 in working state is small. When using detector units 3 with small aperture, once a group of modules of detector units 3 cannot be used, at this time, it is impossible to repair it on site in the first time, then the ring composed of modules of adjacent detector units 3 can be used to complete the scan. That is, when some modules of detector units 3 have problems, small aperture scanning can still be completed.

[0051] Embodiment 4:

[0052] See also Figure 2As shown, a scanning device for multiple scenes with adjustable aperture proposed in an embodiment of the present invention includes a scanning device for multiple scenes with adjustable aperture, including a scanning frame 1, a scanning base 2 arranged on the scanning frame 1, and a plurality of detector units 3 arranged on the scanning base 2;

[0053] The scanning base 2 is an annular structure, and a plurality of detector units 3 are arranged at intervals along the circumference of the scanning base 2 . The detector units 3 can selectively move toward or away from the axis of the scanning base 2 along the radial direction of the scanning base 2 to form a scanning detection ring.

[0054] Furthermore, the number of detector units 3 is 24, and the scanning detection ring is a closed detection ring.

[0055] Further, when the scanning detection ring is scanning scene four, the six detector units 3 are at the same radial position on the scanning base 2 to form a detection ring four 7, wherein the six detector units 3 forming the detection ring four 7 are close to the axis of the scanning base 2, and adjacent detector units 3 are arranged at intervals, and the six detector units 3 close to the axis of the scanning base 2 are in a working state.

[0056] The effects brought about by the above embodiments are: a scanning device with adjustable aperture for multiple scenes, which can selectively enable the detector unit 3 to be close to or away from the axis of the scanning base 2 along the radial direction of the scanning base 2 to form different types of scanning rings to adapt to the scanning of different scenes, so that the detector unit 3 can be in closer contact with the scanning object during detection, thereby improving the image sensitivity. One device can be used in multiple scenes and adapt to multiple scanning objects, with a wide range of applications. For customers who do not use the device frequently, one device can replace multiple devices as before, saving costs and scanning room space.

[0057] Based on the above embodiments 1-4, further, the detector unit 3 includes a sliding installation mechanism 31 fixedly installed on the scanning base 2 and a detector body 32 slidably installed on the sliding installation mechanism 31. The sliding installation mechanism 31 includes a connecting seat 311, a connecting slider 312, a lead screw 313, a guide rail 314, a coupling 315 and a motor 316. The connecting seat 311 is fixedly installed along the radial direction of the scanning base 2, the guide rail 314 is arranged along the longitudinal direction of the connecting seat 311, the motor 316 and the coupling 315 are both fixedly arranged on the connecting seat 311, the output end of the motor 316 is connected to the lead screw 313 through the coupling 315, the connecting slider 312 is sleeved on the lead screw 313, and the connecting slider 312 is threadedly connected to the lead screw 313, the rotation of the motor 316 can drive the connecting slider 312 to reciprocate linearly along the axial direction of the lead screw 313, and the detector body 32 is installed on the connecting slider 312. The specific structure of the sliding installation mechanism 31 can realize multi-position positioning and high positioning accuracy, that is, achieve the comprehensive benefits of high reliability and low cost.

[0058] Here, the modules of the detector unit 3 in the embodiments 1-4 are of two different types: high resolution and high sensitivity. When the modules of the detector unit 3 are arranged crosswise on the circumference, the corresponding high resolution module is used when a high resolution image is required, and the corresponding high sensitivity module is used when a high sensitivity image is required. High resolution and high sensitivity correspond to different performance emphases of the image. Scanning can be performed selectively, which improves the functionality of the scanning device.

[0059] Further, the connection base 311 includes two mounting baffles 3111 perpendicular to the scanning base 2 and arranged parallel to each other, and a connection plate 3112 arranged between the two mounting baffles 3111. The connection plate 3112 abuts against the scanning base 2 and is detachably connected through a locking member. An accommodation space capable of accommodating the lead screw 313, the coupling 315, and the motor 316 is formed between the connection plate 3112 and the two mounting baffles 3111. Specifically, the locking member is a bolt, and the bolt locking installation is convenient, the connection effect is simple, and the structure of the connection base 311 is simple. The one-piece molding setting makes the connection base 311 simple in process and low in cost.

[0060] Furthermore, the scanning frame 1 is a U-shaped structure with an opening facing upward. Both ends of the scanning base 2 extend radially outward to form an integrally formed extension plate 21, and the extension plate 21 can be detachably mounted on the scanning frame 1, so as to facilitate the installation with the scanning frame 1.

[0061] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0062] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0063] In the description of this specification, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0064] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A scanning device for multiple scenes with adjustable aperture, characterized in that: It comprises a scanning frame (1), a scanning base (2) arranged on the scanning frame (1), and a plurality of detector units (3) arranged on the scanning base (2); The scanning base (2) is an annular structure, and a plurality of the detector units (3) are arranged at intervals along the circumference of the scanning base (2). The detector units (3) can selectively move along the radial direction of the scanning base (2) toward or away from the axis of the scanning base (2) to form a scanning detection ring.

2. The scanning device for multiple scenes with adjustable aperture as claimed in claim 1, characterized in that: The scanning detection ring is a closed detection ring.

3. The scanning device for multiple scenes with adjustable aperture as claimed in claim 1, characterized in that: The number of the detector units (3) is 24.

4. The scanning device for multiple scenes with adjustable aperture as claimed in claim 3, characterized in that: When the scanning detection ring is scanning scene one, the 24 detector units (3) are at the same radial position on the scanning base (2) and form a closed detection ring one (4), and the 24 detector units (3) are all in working state.

5. The scanning device for multiple scenes with adjustable aperture as claimed in claim 3, characterized in that: When the scanning detection ring is scanning scene 2, the 12 detector units (3) are at the same radial position on the scanning base (2) to form a closed detection ring 2 (5), wherein the 12 detector units (3) forming the closed detection ring 2 (5) are close to the axis of the scanning base (2), and adjacent detector units (3) are arranged at intervals, and the 12 detector units (3) close to the axis of the scanning base (2) are in a working state.

6. The scanning device for multiple scenes with adjustable aperture as claimed in claim 3, characterized in that: When the scanning detection ring is scanning scene three, the eight detector units (3) are at the same radial position on the scanning base (2) to form a detection ring three (6), wherein the eight detector units (3) forming the detection ring three (6) are close to the axis of the scanning base (2), and adjacent detector units (3) are arranged at intervals, and the eight detector units (3) close to the axis of the scanning base (2) are in a working state.

7. The scanning device for multiple scenes with adjustable aperture as claimed in claim 3, characterized in that: When the scanning detection ring is scanning scene four, the six detector units (3) are at the same radial position on the scanning base (2) to form a detection ring four (7), wherein the six detector units (3) forming the detection ring four (7) are close to the axis of the scanning base (2), and adjacent detector units (3) are arranged at intervals, and the six detector units (3) close to the axis of the scanning base (2) are in a working state.

8. The scanning device for multiple scenes with adjustable aperture as claimed in claim 1, characterized in that: The detector unit (3) comprises a sliding mounting mechanism (31) fixedly mounted on the scanning base (2) and a detector body (32) slidably mounted on the sliding mounting mechanism (31); The sliding installation mechanism (31) comprises a connecting seat (311), a connecting slider (312), a lead screw (313), a guide rail (314), a coupling (315) and a motor (316); The connecting seat (311) is fixedly installed along the radial direction of the scanning base (2), the guide rail (314) is arranged along the longitudinal direction of the connecting seat (311), the motor (316) and the coupling (315) are both fixedly arranged on the connecting seat (311), the output end of the motor (316) is connected to the lead screw (313) through the coupling (315), the connecting slider (312) is sleeved on the lead screw (313), and the connecting slider (312) is threadedly connected to the lead screw (313), the rotation of the motor (316) can drive the connecting slider (312) to reciprocate linearly along the axial direction of the lead screw (313), and the detector body (32) is installed on the connecting slider (312).

9. The scanning device for multiple scenes with adjustable aperture as claimed in claim 8, characterized in that: The connecting base (311) comprises two mounting baffles (3111) which are perpendicular to the scanning base (2) and arranged parallel to each other, and a connecting plate (3112) which is arranged between the two mounting baffles (3111); the connecting plate (3112) is abutted against the scanning base (2) and is detachably connected via a locking member; and an accommodating space which can accommodate the lead screw (313), the coupling (315) and the motor (316) is formed between the connecting plate (3112) and the two mounting baffles (3111).

10. The scanning device for multiple scenes with adjustable aperture as claimed in claim 1, characterized in that: The scanning frame (1) is a U-shaped structural member with an opening facing upward; Both ends of the scanning base (2) extend radially outward to form an integrally formed extension plate (21), and the extension plate (21) can be detachably mounted on the scanning frame (1).

Images