Abstract: A full-body PET-CT combined device (11), characterized by comprising a power source (2), an industrial personal computer (3), a PET machine (5), a CT machine (6), a detection bed (7), a lifting portion (8), and a linear sliding table (9). The CT machine (6) is provided with a CT detector (61) and a CT rack (62). The PET machine (5) consists of a bearing base (51), a barrel detector assembly (52), a top detector assembly (53), and a neck detector assembly (54). The detection bed (7) is horizontally disposed, and a tail portion (71) thereof is fixed to a lifting shaft (81) of the lifting portion (8). A horizontal lifting bottom plate (82) is fixed below the lifting portion (8). The linear sliding table (9) is horizontally placed below the detection bed (7), and the CT machine (6) is located between the PET machine (5) and the lifting portion (8). The combined device (11) further comprises an elongated base (111), with the power source (2) etc. being sequentially fixed to the upper surface of the base (111).

Abstract: Provided is a PET detector for reducing the number of silicon photomultipliers in use, which is characterized in that: the detector comprises layers respectively formed by a scintillation crystal array unit and a silicon photomultiplier (4) array unit, the scintillation crystal array unit and the silicon photomultiplier (4) array unit are rectangular cross sections in plan view, and the scintillation crystal array unit and the silicon photomultiplier (4) array unit have the same area of the rectangular cross sections in plan view; the scintillation crystal array unit consists of a plurality of scintillation crystal strips (1) parallel to each other, free of gaps and attached to each other on sides, the scintillation crystal strips (1) are all cuboids with uniform length, width and height; the silicon photomultiplier (4) array unit is an array assembly, which is formed by M silicon photomultiplier (4) arrays and has the rectangular cross section in plan view.

Abstract: A whole body PET and CT combined detector and device, comprising a CT scanner frame (4) and a PET detection chamber (5) at the front and the rear along a common central axis. The CT scanner frame (4) is provided with a housing and also has a cylindrical CT scanning channel vertical to the central axis; the PET detection chamber (5) is formed by a plurality of PET detection modules (6, 7) adjacent to each other, and PET detection crystals (10) are all arranged in a direction towards to the chamber, the PET detection chamber (5) is entirely closed or a first opening is formed at the side adjacent to the CT scanner frame (4); each of the PET detection modules (6, 7) is composed of the PET detection crystals (10), a photoelectric sensor array (8), and a light guide (9); and except for the first opening, the cross-sectional areas of all gaps of the PET detection chamber (5) are smaller than the detected surface area of the smallest one of the PET detection crystals (10).

Abstract: Disclosed is a general PET device (1) with a gradually narrowed head, the device comprising a body (2), a head (3) and a top (4) closely arranged in sequence, wherein the body (2) is composed of a plurality of body module rings (21); the head (3) is composed of N head module rings (31), with N being a natural number and being at least two; the top (4) is composed of a plurality of top PET detection modules (41); each of the body module rings (21) is composed of several body PET detection modules (22) evenly distributed in a circumferential direction thereof, and all the body module rings (21) are closely arranged in an axial direction to form the body (2); in the N head module rings (31), the rings sequentially decreases in size, and are closely arranged in the axial direction in a sequence from the first head module ring (31) to the Nth head module ring (31); and the detection surfaces of the plurality of top PET detection modules (41) are located in the same plane, and all the detection surfaces face the he

Abstract: A full-angle coincidence brain PET detector and apparatus, including a plurality of PET detection modules, each of which includes PET detection crystals, a photoelectric sensor array and light guides, all the detection crystals being arranged towards a cavity. The detection modules form a chamber having an opening, each dimension of the cavity is no greater than 35-50 cm, the opening is located at a lower side of the chamber. A cross-sectional area at the opening is greater than a maximum cross-sectional area of a head in a horizontal direction. Except for the opening, all the detection modules are non-detachably connected together. All cross-sectional areas of gaps between the detection modules are less than ½ to ? of the area of the smallest one of the detection crystals. At least 75% to 80% of a coincidence event occurring at a center of the chamber is detected by the detection modules.

Abstract: Provided is a PET detector for reducing the number of silicon photomultipliers in use, which is characterized in that: the detector comprises layers respectively formed by a scintillation crystal array unit and a silicon photomultiplier (4) array unit, the scintillation crystal array unit and the silicon photomultiplier (4) array unit are rectangular cross sections in plan view, and the scintillation crystal array unit and the silicon photomultiplier (4) array unit have the same area of the rectangular cross sections in plan view; the scintillation crystal array unit consists of a plurality of scintillation crystal strips (1) parallel to each other, free of gaps and attached to each other on sides, the scintillation crystal strips (1) are all cuboids with uniform length, width and height; the silicon photomultiplier (4) array unit is an array assembly, which is formed by M silicon photomultiplier (4) arrays and has the rectangular cross section in plan view.

Abstract: A PET detector having some light guides not cut, comprising a light guide bar array unit having some light guides not cut. The light guide bar array unit is in the form of an array consisting of a plurality of parallel light guide bars (2), and adjacent light guide bars (2) in some regions of the light guide bar array unit and a reflective material (4) between every two light guide bars are replaced with a light guide three-dimensional block having the identical shape and volume, taken as a whole. The detector sequentially comprises a layer formed by a scintillating crystal array unit, a layer formed by the light guide bar array unit, and a layer formed by a silicon photomultiplier array unit in an arrangement order.

Abstract: A whole body PET and CT combined detector and device, comprising a CT scanner frame (4) and a PET detection chamber (5) at the front and the rear along a common central axis. The CT scanner frame (4) is provided with a housing and also has a cylindrical CT scanning channel vertical to the central axis; the PET detection chamber (5) is formed by a plurality of PET detection modules (6, 7) adjacent to each other, and PET detection crystals (10) are all arranged in a direction towards to the chamber; the PET detection chamber (5) is entirely closed or a first opening is formed at the side adjacent to the CT scanner frame (4); each of the PET detection modules (6, 7) is composed of the PET detection crystals (10), a photoelectric sensor array (8), and a light guide (9); and except for the first opening, the cross-sectional areas of all gaps of the PET detection chamber (5) are smaller than the detected surface area of the smallest one of the PET detection crystals (10).

Abstract: An overall full-angle coincidence brain PET detector (1) and an overall apparatus, said detector (1) comprising a plurality of PET detection modules (7), each PET detection module (7) consisting of PET detection crystals (10), a photoelectric sensor array (8) and light guides (9), and all the PET detection crystals (10) being arranged towards the inner cavity. The plurality of PET detection modules (7) form a detection chamber (3) having an opening (4), each of the length, width and height of an inner cavity of the detection chamber (3) is no greater than 35 to 50 cm, and the opening (4) of the detection chamber (3) is located at the lower side of the detection chamber (3). The cross-sectional area at the opening (4) is greater than the maximum cross-sectional area of a head (2) in the horizontal direction. Except for the opening (4), all the PET detection modules (7) are non-detachably connected together.

Abstract: A full-angle coincidence PET detector array, comprising the following components: a plurality of PET detection modules (2), wherein each of the PET detection modules (2) is composed of PET detection crystals (7), a photosensor array (5) and a light guide (6); and the plurality of PET detection modules (2) are adjacent to each other to form an integrally closed detection chamber. A full-angle coincidence PET detection method, comprising the following steps: 1) the step of assembling the detection chamber; 2) the step of placing a detection object; and 3) the step of acquiring an image. The cross-sectional area of all voids is smaller than the area of the smallest of the PET detection crystals (7) when the detection chamber is in a closed state; and the integrally closed detection chamber is of a cylindrical shape, a capsular shape, an ellipsoidal shape or a regular polygonal prism shape.