# US 11,307,316 B2 · Detector structure in a PET system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,307,316 B2 - Document ID: US11307316B2 - Status: Granted - Kind: B2 - Application number: 16/740,433 - Filed: 2020-01-11 - Published: 2020-05-14 - Granted: 2022-04-19 - Earliest claimed: 2016-10-14 - Assignees: Shanghai United Imaging Healthcare Co., Ltd. - Applicants: Shanghai United Imaging Healthcare Co., Ltd. - Inventors: Huawei Jiang; Huaifang Jiang - Web page: https://patentgrep.com/patent/US11307316B2 ## CPC - G01T 1/2985: {In depth localisation, e.g. using positron emitters; Tomographic imaging (longitudinal and transverse section imaging; apparatus for radiation diagnosis sequentially in different planes, steroscopic radiation diagnosis); (using external radiation sources A61B6/02)} - G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00) ## Abstract The present disclosure relates to a PET detector and a PET frame. The PET detector may include a plurality of detector modules and a plurality of installing modules configured to install the plurality of detector modules. The plurality of installing modules may be coupled together to form a detector ring. The PET frame may include a detector stabilizing cylinder configured to stabilize a detector and a fixing support configured to support the detector stabilizing cylinder. The detector stabilizing cylinder may be rotatably fixed on the fixing support. ## Claims ### Claim 1 A PET frame, comprising: a detector stabilizing cylinder configured to stabilize one or more detector modules; and a fixing support configured to support the detector stabilizing cylinder, wherein the detector stabilizing cylinder is rotatably fixed on the fixing support through a rolling wheel, the fixing support includes a front fixing support and a rear fixing support, and the rolling wheel is fixed between the front fixing support and the rear fixing support by a scrollable axis. ### Claim 2 (depends on 1) The PET frame of claim 1, wherein the rolling wheel includes at least two rolling wheels that are located on both sides of a vertical center line of the detector stabilizing cylinder, respectively, and are beneath a horizontal center line of the detector stabilizing cylinder. ### Claim 3 (depends on 1) The PET frame of claim 1, wherein the rolling wheel includes at least one drive wheel configured to drive the detector stabilizing cylinder to rotate on the fixing support. ### Claim 4 (depends on 1) The PET frame of claim 1, wherein the rolling wheel includes: an axial position-limiting wheel configured to limit an axial position of the detector stabilizing cylinder; and a radial position-limiting wheel configured to limit a radial position of the detector stabilizing cylinder. ### Claim 5 (depends on 1) The PET frame of claim 1, wherein the rolling wheel includes at least one axial position-limiting wheel and at least two radial position-limiting wheels. ### Claim 6 (depends on 5) The PET frame of claim 5, wherein the at least one axial rolling wheel and the at least two radial position-limiting wheels are uniformly distributed along a circumferential direction of the detector stabilizing cylinder. ### Claim 7 (depends on 1) The PET frame of claim 1, wherein the rolling wheel includes four axial position-limiting wheels and four radial position-limiting wheels. ### Claim 8 (depends on 1) The PET frame of claim 1, further comprising a brake part configured to immobilize the detector stabilizing cylinder. ### Claim 9 A PET detector, comprising: one or more detector modules and a PET frame, the PET frame including: a detector stabilizing cylinder configured to stabilize the one or more detector modules; and a fixing support configured to support the detector stabilizing cylinder, wherein the detector stabilizing cylinder is rotatably fixed on the fixing support through a rolling wheel, the fixing support includes a front fixing support and a rear fixing support, and the rolling wheel is fixed between the front fixing support and the rear fixing support by a scrollable axis. ### Claim 10 (depends on 9) The PET detector of claim 9, wherein the at least one rolling wheel includes at least two rolling wheels that are located on both sides of a vertical center line of the detector stabilizing cylinder, respectively, and are beneath a horizontal center line of the detector stabilizing cylinder. ### Claim 11 (depends on 9) The PET detector of claim 9, wherein the at least one rolling wheel includes at least one drive wheel configured to drive the detector stabilizing cylinder to rotate on the fixing support. ### Claim 12 (depends on 9) The PET detector of claim 9, wherein the at least one rolling wheel includes: an axial position-limiting wheel configured to limit an axial position of the detector stabilizing cylinder; and a radial position-limiting wheel configured to limit a radial position of the detector stabilizing cylinder. ### Claim 13 (depends on 9) The PET detector of claim 9, wherein the at least one rolling wheel includes at least one axial position-limiting wheel and at least two radial position-limiting wheels. ### Claim 14 (depends on 13) The PET detector of claim 13, wherein the at least one axial rolling wheel and the at least two radial position-limiting wheels are uniformly distributed along a circumferential direction of the detector stabilizing cylinder. ### Claim 15 (depends on 9) The PET detector of claim 9, wherein the at least one rolling wheel includes four axial position-limiting wheels and four radial position-limiting wheels. ### Claim 16 (depends on 9) The PET detector of claim 9, further comprising a brake part configured to immobilize the detector stabilizing cylinder. ### Claim 17 (depends on 1) The PET frame of claim 1, wherein the front fixing support includes a first supporting foot and a first supporting ring, and the rear fixing support includes a second supporting foot and a second supporting ring. ### Claim 18 (depends on 17) The PET frame of claim 17, wherein the rolling wheel is fixed between the first supporting ring and the second supporting ring. ### Claim 19 (depends on 9) The PET detector of claim 9, wherein the front fixing support includes a first supporting foot and a first supporting ring, and the rear fixing support includes a second supporting foot and a second supporting ring. ### Claim 20 (depends on 19) The PET detector of claim 19, wherein the rolling wheel is fixed between the first supporting ring and the second supporting ring.