A brain PET detection device

Abstract

The present invention discloses a brain PET detection device, which belongs to the field of PET detection technology. The present invention comprises an inspection bed plate and a movable PET detection unit for detecting the head, wherein a head support for supporting the head is provided at one end of the inspection bed plate close to the PET detection unit, and a transmission unit is provided at the bottom of the PET detection unit, and the transmission unit comprises a transmission chain plate connected to the bottom of the PET detection unit, and transmission rollers are provided at both ends of the transmission chain plate, and the transmission rollers rotate circumferentially to drive the transmission chain plate and the upper PET detection unit to move in a direction close to or away from the head support. In view of the above problems, the present invention proposes to provide a brain PET detection device, which can perform brain PET detection on the patient's brain without moving the patient, and has high detection efficiency and accuracy, effectively improving the safety of surgery and examination.

Description

Technical Field

[0001] The present invention belongs to the technical field of PET detection, and more specifically, relates to a brain PET detection device. Background Art

[0002] PET stands for positron emission tomography (PET), which is an imaging device that reflects the genetic, molecular, metabolic and functional status of lesions. It uses positron radionuclides to label human metabolites such as glucose as imaging agents, and reflects the metabolic changes of lesions through the uptake of imaging agents by lesions, thereby providing clinical biological metabolic information of diseases. It is a new milestone in the development of life sciences and medical imaging technology today.

[0003] At present, since PET equipment can perform whole-body scans and local scans such as the head and limbs, the size and weight of the equipment are very large, and the examinee is usually moved for examination. However, this solution has obvious disadvantages. The examinee has a bad experience. The impact, noise and discomfort of entering a closed cavity during movement will cause the examinee's mood swings. For some special cases, the examination may fail due to the examinee's non-cooperation. At present, PET examination technology is generally used before surgery or during non-surgery. However, in special cases, patients also need to undergo brain PET examinations during surgery or just after surgery. However, at this time, since the patient is in surgery or has just undergone surgery, the condition is not stable and it is inconvenient to move. Therefore, it is urgent to design and develop a brain PET detection device that can easily achieve accurate detection of brain PET without moving the patient, with high detection efficiency and accuracy.

[0004] After searching, there are patents related to PET equipment, such as Chinese patent application No.: 2016104241824, which discloses a method and equipment for implementing PET during surgery, wherein the equipment includes an operating table and an intraoperative PET, the operating table and the intraoperative PET are respectively located in the operating room and the PET room, the operating room and the PET room are separated by an automatic door, and a slide rail is laid between the PET room and the operating room, and the intraoperative PET moves on the slide rail to dock with the operating table. Considering that it is inconvenient for patients to move during surgery, a mobile PET is adopted. When not in use, the PET should be hidden in the next room. The room and the operating room are laid with slide rails. When an examination is required, the PET slides to the front of the operating table, and then the operating table is raised and lowered to the docking height, and the movable bed board of the operating table slides and docks with the docking block of the PET to implement the PET examination. After the examination is completed, the PET puts the bed board back to the bed board and returns to the next room. .

[0005] For another example, Chinese patent application No. 2009801463385 discloses a compact and mobile high-resolution PET brain imager, which includes a compact annular static PET imager mounted in a helmet-shaped structure. When attached to the patient's head, the helmet-shaped brain imager maintains relative geometric fixation of the head to the imager throughout the imaging process. The brain imaging helmet contains a radiation sensor and minimal front-end electronics. A flexible mechanical suspension / belt system supports the weight of the helmet, thereby allowing limited movement of the patient's head during the imaging scan. Using a very simple mobile scanner with limited space requirements for use and storage, the compact annular PET imager can achieve very high resolution imaging of neurological brain function, cancer, and traumatic effects. Summary of the invention

[0006] 1. Technical problem to be solved by the invention

[0007] In view of the above problems, the present invention provides a brain PET detection device, which can perform brain PET detection on the patient's brain without moving the patient. The detection efficiency and accuracy are high, which effectively improves the safety of surgery and examination.

[0008] 2. Technical solution

[0009] To solve the above problems, the present invention adopts the following technical solutions.

[0010] A brain PET detection device of the present invention comprises an inspection bed plate and a movable PET detection unit for detecting the head, wherein a head support for supporting the head is provided outwardly from an end portion of one side of the inspection bed plate close to the PET detection unit, a transmission unit is provided at the bottom of the PET detection unit, the transmission unit comprises a transmission chain plate connected to the bottom of the PET detection unit, transmission rollers are provided at both ends of the transmission chain plate, and the transmission rollers rotate circumferentially to drive the transmission chain plate and the upper PET detection unit to move in a direction close to or away from the head support.

[0011] As a further improvement of the present invention, a safety limit plate is extended upward from one end of the inspection bed board close to the PET detection unit, a notch for installing a head support is provided at the center of the safety limit plate, and a safety guard plate is extended outward from the bottom of the notch.

[0012] As a further improvement of the present invention, the head rest includes a fixing portion arranged on the examination bed board, a supporting portion for supporting the head is arranged above the fixing portion, the supporting portion is a downwardly recessed arc-shaped structure, and both sides of the supporting portion in the width direction are provided with upwardly extending arc-shaped limiting portions, and the limiting portions on both sides are relatively distributed inwardly.

[0013] As a further improvement of the present invention, an extension portion is horizontally extended outward from the end of the support portion close to the PET detection unit, and a safety guard plate is provided below the support portion and the extension portion, one end of the safety guard plate is fixed to the end of the examination bed board, and the other end of the safety guard plate extends beyond the outer end of the extension portion.

[0014] As a further improvement of the present invention, the PET detection unit includes a fixed ring with a circular structure, the center circle of the fixed ring is the head detection port, and a circle of matching crystal unit components is arranged on the outer periphery of the fixed ring, and the crystal unit components are fixed to the outer periphery of the fixed ring by snap fasteners.

[0015] As a further improvement of the present invention, the crystal unit assembly is internally provided with a crystal for detecting the scanning head, a core circuit board and a heat dissipation structure, and a limit sensor is provided on the PET detection unit.

[0016] As a further improvement of the present invention, the bottom of the fixed ring is set on the fixed base through a fixed bracket, a chassis is set below the fixed base, both sides of the chassis are fixed to the support plates on both sides through the chassis connecting plates, and the bottom of the support plate is fixed to the transmission chain plate.

[0017] As a further improvement of the present invention, a lifting unit is provided at the bottom of the inspection bed board, and the lifting unit includes support members for supporting both sides in the width direction of the bottom of the inspection bed board, and a pair of lifting frames that are cross-hinged with each other are vertically provided at the bottom of the support members. The bottoms of the lifting frames on the inner sides of the support members on both sides are connected by connecting members, and a horizontally extending transmission screw is connected to the connecting member. The transmission screw moves horizontally under the drive of the motor to drive the lifting frame and the inspection bed board above to move up and down.

[0018] As a further improvement of the present invention, a matching base is provided under the support member, and a sliding groove is opened on the inner side of the base along the length direction. The two ends of the connecting member are correspondingly inserted into the sliding grooves of the bases on both sides, and the bottom of the lifting frame outside the support members on both sides is also correspondingly inserted into the sliding grooves of the bases on both sides.

[0019] As a further improvement of the present invention, the support member is L-shaped, wherein the support member includes a horizontal section fixed to the bottom of the examination bed board, a vertical section is provided on the outer side of the horizontal section and extends vertically downward, and an upper slide groove is provided on the vertical section along the length direction, and the top of the lifting frame fits into the upper slide groove.

[0020] 3. Beneficial effects

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) A brain PET detection device of the present invention, compared with conventional PET imaging, the PET detection unit of the present invention is a device specifically for head examination, and its geometric structure is significantly reduced, thereby improving spatial resolution and sensitivity. In traditional PET scanning, the PET device is large in size, and the PET device and the traditional examination bed are independent of each other. The traditional examination bed requires the patient to be moved and has a complex structure. Compared with the traditional PET device and the traditional operating bed, the PET detection unit and the examination bed board of the present invention are integrated into one, with a high degree of integration, thereby reducing the difficulty and cost of production and maintenance, and facilitating transportation.

[0023] (2) In the brain PET detection device of the present invention, the head support is effectively fixed on the examination bed board and is easy to replace. The safety guard plate not only provides strong support for the head support, but also effectively prevents the head support from breaking and causing harm to the subject, thereby effectively improving the safety performance of the overall equipment.

[0024] (3) A brain PET detection device of the present invention has a crystal unit component which is internally provided with a crystal for detecting the scanning head, a core circuit board and a heat dissipation structure, which can effectively ensure the effectiveness of the crystal receiving data transmission and minimize the distance of data transmission and the influence of heat on the circuit board.

[0025] (4) In a brain PET detection device of the present invention, a motor is connected to a transmission screw through a motor interface, and the transmission screw drives the lifting frame to realize scissor movement, thereby realizing the raising and lowering of the examination bed board, which can take into account users of all heights and ensure a good user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of a brain PET detection device of the present invention;

[0027] Figure 2 A schematic diagram of the structure of a brain PET detection device according to the present invention;

[0028] Figure 3 It is a structural schematic diagram of the head support in the present invention;

[0029] Figure 4 It is a structural schematic diagram of the PET detection unit in the present invention;

[0030] Figure 5 It is a structural schematic diagram of the transmission unit in the present invention;

[0031] Figure 6 It is a structural schematic diagram of the lifting unit in the present invention.

[0032] The numbers in the figure are:

[0033] 100. Inspection bed board; 110. Safety limit plate; 120. Headrest; 121. Support part; 122. Fixing part; 123. Limiting part; 124. Extension part; 125. Safety guard plate; 200. PET detection unit; 201. Detection port; 210. Crystal unit assembly; 220. Fixing ring; 221. Fixing bracket; 222. Fixing base; 230. Fastener; 240. Chassis; 250. Support plate; 251. Lower connecting plate; 252. Upper connecting plate; 253. Chassis connecting plate; 300. Transmission unit; 310. Transmission chain plate; 320. Active roller; 330. Driven roller; 400. Protective cover; 500. Lifting unit; 510. Support member; 520. Lifting frame; 530. Connecting member; 540. Transmission screw; 550. Motor interface; 560. Base. DETAILED DESCRIPTION

[0034] In order to further understand the content of the present invention, the present invention is described in detail in conjunction with the accompanying drawings.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] The present invention will be further described below in conjunction with the embodiments.

[0037] Example 1

[0038] Combination Figure 1-Figure 6A brain PET detection device of this embodiment includes an inspection bed plate 100 and a movable PET detection unit 200 for detecting the head, which realizes the movement of the detection equipment, and the subject remains stationary in the horizontal direction, which guarantees the detection experience of the subject and the safety of the inspection to the greatest extent. At the same time, since the subject does not need to move, the inspection bed plate 100 does not need to move, which is conducive to simplifying the structural design of the inspection bed plate 100. A head support 120 for supporting the head is extended outward from one end of the inspection bed plate 100 close to the PET detection unit 200. During the inspection, the subject lies flat on the inspection bed plate 100, and the head is stuck in the head support 120. The head support 120 clamps and supports the head, effectively preventing the subject from moving accidentally during the inspection process and avoiding affecting the accuracy of the inspection. In this embodiment, a transmission unit 300 is provided at the bottom of the PET detection unit 200. The transmission unit 300 includes a transmission chain plate 310 connected to the bottom of the PET detection unit 200. Both ends of the transmission chain plate 310 are provided with transmission rollers. The transmission rollers rotate circumferentially to drive the transmission chain plate 310 and the upper PET detection unit 200 to move in a direction close to or away from the head support 120. Specifically, in this embodiment, both ends of the transmission chain plate 310 are provided with an active roller 320 and a driven roller 330. The active roller 320 is driven by a roller motor to rotate circumferentially. When the roller motor rotates forward, the transmission chain plate 310 and the upper PET detection unit 200 are driven to move in a direction close to the head support 120. When the roller motor rotates reversely, the transmission chain plate 310 and the upper PET detection unit 200 are driven to move in a direction away from the head support 120. The transmission chain plate 310 can effectively bear the weight of the PET detection unit 200 and the impact caused by the movement, and is controlled to make effective horizontal reciprocating motion to achieve the switching between the working position and the position to be detected of the PET detection unit 200. At the same time, this transmission method can achieve effective covering of the outer periphery of the transmission unit 300 by covering the shell, ensuring the safety of the user and the person being tested and the overall cleanliness of the transmission unit 300.

[0039] Compared with conventional PET imaging, the PET detection unit 200 in this embodiment is a special head inspection device, and its geometric structure is significantly reduced, thereby improving spatial resolution and sensitivity. In traditional PET scanning, the PET device is large in size, and the PET device and the traditional examination bed are independent of each other. The traditional examination bed requires the patient to be moved and has a complex structure. Compared with the traditional PET device and the traditional operating bed, the PET detection unit 200 and the examination bed board 100 in this embodiment are integrated into one, with a high degree of integration, thereby reducing the difficulty and cost of production and maintenance, and facilitating transportation.

[0040] like Figure 3As shown, in this embodiment, a safety limit plate 110 is extended upwardly from one end of the inspection bed plate 100 near the PET detection unit 200. A notch for installing the head support 120 is provided at the center of the safety limit plate 110, and a safety guard plate 125 is extended outwardly from the bottom of the notch. The safety guard plate 125 can effectively provide safe and effective protection for the subject, and ensure the personal safety of the subject to the greatest extent. The head support 120 includes a fixing portion 122 provided on the inspection bed plate 100, and a supporting portion 121 for supporting the head is provided above the fixing portion 122. The supporting portion 121 is a circular arc structure that is concave downward, which fits the head and effectively improves the comfort of the head support. In this embodiment, both sides of the support portion 121 in the width direction are provided with upwardly extending arc-shaped limiting portions 123, and the limiting portions 123 on both sides are relatively distributed inward. Specifically, in this embodiment, a limiting portion 123 is provided at the front and rear positions on both sides of the width direction of the support portion 121, that is, the four limiting portions 123 form an enclosure for the head, which can further effectively improve the safety protection of the head.

[0041] In this embodiment, the end of the support part 121 near the PET detection unit 200 is horizontally extended outward to be provided with an extension part 124, and a safety guard plate 125 is provided below the support part 121 and the extension part 124. One end of the safety guard plate 125 is fixed to the end of the inspection bed plate 100, and the other end of the safety guard plate 125 extends beyond the outer end of the extension part 124. The head support 120 is effectively fixed on the inspection bed plate 100 and is easy to replace. The safety guard plate 125 not only provides strong support for the head support 120, but also can effectively prevent the head support 120 from breaking and causing harm to the subject, effectively improving the safety performance of the overall equipment.

[0042] like Figure 4As shown, in this embodiment, the PET detection unit 200 includes a fixed ring 220 in a circular ring structure, and the central circle of the fixed ring 220 is the head detection port 201. During the inspection, the head of the subject is wrapped in the detection port 201 for scanning and detection. In this embodiment, a circle of matching crystal unit components 210 are arranged on the outer periphery of the fixed ring 220. The crystal unit components 210 are fixed to the outer periphery of the fixed ring 220 by a snap 230. The detachable connection mode of the crystal unit components 210 facilitates the disassembly and maintenance of a single crystal unit component 210, thereby reducing the maintenance cost. The crystal unit components 210 are provided with a crystal, a core circuit board and a heat dissipation structure for detecting the scanning head, which can effectively ensure the effectiveness of the crystal receiving data transmission and minimize the distance of data transmission and the influence of heat on the circuit board. In this embodiment, a limit sensor is arranged on the PET detection unit 200. When the limit sensor detects that the PET detection unit 200 has reached the inspection position, a signal is sent to the control center, and the control center stops the rotation of the roller motor. At this time, the PET detection unit 200 stops and starts to start scanning and detecting the head.

[0043] In this embodiment, the bottom of the fixed ring 220 is set on the fixed base 222 through the fixed bracket 221, and a chassis 240 is set below the fixed base 222. Auxiliary functional units such as a power supply are arranged in the chassis. The two sides of the chassis 240 are fixed to the support plates 250 on both sides through the chassis connecting plates 253, and the two sides of the bottom of the support plate 250 are fixed to the transmission chain plate 310 through the lower connecting plate 251, and the two sides of the fixed base 222 are fixed to the top of the support plates 250 on both sides through the lower connecting plate 251.

[0044] like Figure 6 As shown, in this embodiment, a lifting unit 500 is provided at the bottom of the inspection bed board 100. The lifting unit 500 includes a support member 510 for supporting both sides of the bottom width direction of the inspection bed board 100. A pair of lifting frames 520 cross-hinged and interlocked are vertically provided at the bottom of the support member 510. The bottoms of the lifting frames 520 on the inner sides of the support members 510 on both sides are connected by a connecting member 530, and a horizontally extending transmission screw 540 is connected to the connecting member 530. The transmission screw 540 moves horizontally under the drive of the motor to drive the lifting frame 520 and the inspection bed board 100 above to move up and down. Specifically, in this embodiment, the motor is connected to the transmission screw 540 through the motor interface 550, and the transmission screw 540 drives the lifting frame 520 to realize the scissor movement, thereby realizing the raising and lowering of the inspection bed board 100, which can take into account users of all heights and ensure a good user experience.

[0045] In this embodiment, a matching base 560 is provided below the support member 510, and a lower sliding groove is provided inside the base 560 along the length direction, and the two ends of the connecting member 530 are correspondingly inserted into the lower sliding grooves of the base 560 on both sides, and the bottom of the lifting frame 520 outside the supporting members 510 on both sides is also correspondingly inserted into the lower sliding grooves of the base 560 on both sides, and the two ends of the connecting member 530 and the bottom of the lifting frame 520 outside the supporting members 510 on both sides slide horizontally in the lower sliding grooves on both sides driven by the transmission screw 540. The support member 510 is an L-shaped structure, wherein the support member 510 includes a horizontal section fixed to the bottom of the inspection bed board 100, and a vertical section is provided on the outer side of the horizontal section vertically extending downward, and an upper sliding groove is provided on the upper side of the vertical section along the length direction, and the top of the lifting frame 520 is inserted into the upper sliding groove, and the top of the lifting frame 520 slides correspondingly in the upper sliding groove, which facilitates the scissor movement of the lifting frame 520, thereby realizing the raising and lowering of the inspection bed board 100.

[0046] like Figure 2 As shown, in this embodiment, a protective cover 400 is provided below the inspection bed board 100 and the PET detection unit 200. The protective cover 400 is a box structure with an opening at the top, wherein the lifting unit 500 and the transmission unit 300 are both located inside the protective cover 400, which can effectively protect the lifting unit 500 and the transmission unit 300, ensuring that the user or the person being tested will not be mechanically injured, and also protecting the cleanliness of the lifting unit 500 and the transmission unit 300. In this embodiment, the transmission unit 300 is installed on the protective cover 400 to avoid modification of the scanning room, and can also effectively prevent medical staff or patients from bumping into and tripping.

[0047] A method for using a brain PET detection device according to the present embodiment is to use the above-mentioned brain PET detection device to perform a human head inspection. After the inspected person lies flat on the inspection bed board 100, his head is stuck in the head support 120. After the inspection bed board 100 is lifted to a height corresponding to the PET detection unit 200 by the lifting unit 500, the PET detection unit 200 moves towards the inspection bed board 100 under the drive of the transmission unit 300 until the head support 120 is wrapped into the detection port 201 of the PET detection unit 200. At this time, the PET detection unit 200 reaches the set inspection position. Finally, the PET detection unit 200 is started to perform a head scanning inspection. After the inspection is completed, the PET detection unit 200 moves away from the inspection bed board 100 under the drive of the transmission unit 300 until it returns to the initial position.

[0048] The examples described in the present invention are merely descriptions of the preferred implementation modes of the present invention, and are not intended to limit the concept and scope of the present invention. Without departing from the design concept of the present invention, various modifications and improvements made to the technical solutions of the present invention by engineers and technicians in this field should all fall within the protection scope of the present invention.

Claims

1. A brain PET detection device, Features: The invention comprises an inspection bed plate (100) and a movable PET inspection unit (200) for inspecting the head, wherein a head support (120) for supporting the head is provided at an end portion of the inspection bed plate (100) close to the PET inspection unit (200) and extends outwards; a transmission unit (300) is provided at the bottom of the PET inspection unit (200); the transmission unit (300) comprises a transmission chain plate (310) connected to the bottom of the PET inspection unit (200); transmission rollers are provided at both ends of the transmission chain plate (310); the transmission rollers rotate in a circumferential direction to drive the transmission chain plate (310) and the PET inspection unit (200) above to move in a direction approaching or away from the head support (120); A safety limit plate (110) is provided at one end of the inspection bed plate (100) close to the PET detection unit (200) and extends upwards, a notch for mounting a head support (120) is provided at the center of the safety limit plate (110), and a safety guard plate (125) is provided at the bottom of the notch and extends outwards; The head support (120) comprises a fixing portion (122) arranged on the examination bed plate (100); a supporting portion (121) for supporting the head is arranged above the fixing portion (122); the supporting portion (121) is a circular arc structure that is concave downwards; and circular arc-shaped limiting portions (123) extending upwards are arranged on both sides of the supporting portion (121) in the width direction; the limiting portions (123) on both sides are relatively distributed inwards; An extension portion (124) is horizontally extended outward from the end of the support portion (121) close to the PET detection unit (200), and a safety guard plate (125) is provided below the support portion (121) and the extension portion (124); one end of the safety guard plate (125) is fixed to the end of the inspection bed plate (100), and the other end of the safety guard plate (125) extends beyond the outer end of the extension portion (124); The PET detection unit (200) comprises a fixing ring (220) in a circular ring structure, the center circle of the fixing ring (220) being a head detection port (201), a circle of matching crystal unit components (210) being arranged on the outer periphery of the fixing ring (220), and the crystal unit components (210) being fixed to the outer periphery of the fixing ring (220) by means of a snap fitting (230); The crystal unit assembly (210) is provided with a crystal for detecting the scanning head, a core circuit board and a heat dissipation structure, and a limit sensor is provided on the PET detection unit (200); The bottom of the fixing ring (220) is arranged on the fixing base (222) via a fixing bracket (221), a chassis (240) is arranged below the fixing base (222), two sides of the chassis (240) are fixed to the supporting plates (250) on both sides via chassis connecting plates (253), and the bottom of the supporting plates (250) is fixed to the transmission chain plate (310).

2. A brain PET detection device according to claim 1, Features: A lifting unit (500) is arranged at the bottom of the inspection bed plate (100), and the lifting unit (500) comprises support members (510) for supporting both sides of the bottom of the inspection bed plate (100) in the width direction, and a pair of lifting frames (520) cross-hinged and connected to each other are vertically arranged at the bottom of the support members (510), and the bottoms of the lifting frames (520) inside the support members (510) on both sides are connected via connecting members (530), and a horizontally extending transmission screw (540) is connected to the connecting member (530), and the transmission screw (540) is driven by a motor to move horizontally to drive the lifting frame (520) and the inspection bed plate (100) above to move up and down.

3. A brain PET detection device according to claim 2, Features: A matching base (560) is provided below the support member (510), and a downward sliding groove is provided on the inner side of the base (560) along the length direction. The two ends of the connecting member (530) are correspondingly inserted into the downward sliding grooves of the bases (560) on both sides, and the bottom of the lifting frame (520) outside the support members (510) on both sides is also correspondingly inserted into the downward sliding grooves of the bases (560) on both sides.

4. A brain PET detection device according to claim 3, Features: The support member (510) is in an L-shaped structure, wherein the support member (510) comprises a horizontal section fixed to the bottom of the examination bed plate (100), a vertical section is vertically extended downwardly from the outer side of the horizontal section, and an upper slide groove is provided on the vertical section along the length direction, and the top of the lifting frame (520) is engaged and snapped into the upper slide groove.

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