# US 7,465,930 B2 · Wobbling mechanism to compensate FOV truncation in SPECT systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,465,930 B2 - Document ID: US7465930B2 - Status: Granted - Kind: B2 - Application number: 11/414,462 - Filed: 2006-04-28 - Published: 2007-11-01 - Granted: 2008-12-16 - Earliest claimed: 2006-04-28 - Assignees: Siemens Medical Solutions USA, Inc. - Inventors: Jinhun Joung - Web page: https://patentgrep.com/patent/US7465930B2 ## CPC - G01T 1/1648: {Ancillary equipment for scintillation cameras, e.g. reference markers, devices for removing motion artifacts, calibration devices (adapted for flow studies G01T1/1647)} - 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 A nuclear imaging system and method are provided for synchronously recovering the field of view of a target to be imaged includes multiple detectors attached to a gantry, a support member or wobbling ring and a driver. The driver engages the wobbling ring whereby the wobbling ring rotates with respect to the gantry. The wobbling ring cooperates with the detectors causing the detectors to synchronously adjust to multiple viewing positions of a detection target, enabling recovery of the full field of view from an otherwise truncated field of view if the detectors were stationary with respect to the gantry. ## Claims ### Claim 1 A nuclear image detection system for recovering a full field of view of a target to be imaged, comprising: a gantry; multiple detectors each having a gantry attachment site thereon and being attached to said gantry at said gantry attachment site; and an arrangement cooperating with said gantry such that the arrangement synchronously moves said multiple detectors to different viewing angles with respect to said gantry whereby the full field of view of a target to be imaged can be recovered. ### Claim 2 (depends on 1) The system of claim 1, wherein the gantry is fixed. ### Claim 3 (depends on 1) The system of claim 1, wherein said arrangement includes a support member, wherein the detectors are moved at said gantry attachment site by movement of the support member from a first viewing angle to a second viewing angle whereby the full field of view can be recovered. ### Claim 4 (depends on 1) The system of claim 1, wherein the detectors obtain detection readings at each of the multiple viewing angles. ### Claim 5 (depends on 1) The system of claim 1, wherein the detectors obtain detection readings continuously throughout said synchronous movement. ### Claim 6 (depends on 1) The system of claim 1, wherein the different multiple viewing angles enable the detectors to view different portions of the field of view. ### Claim 7 (depends on 1) The system of claim 1, wherein said arrangement includes a support member, wherein the gantry and the support member both rotate so that the detectors orbit the desired field of view. ### Claim 8 (depends on 7) The system of claim 7, wherein the support member is a wobbling ring. ### Claim 9 (depends on 8) The system of claim 8, wherein the gantry attachment site is also a gantry pivot site. ### Claim 10 (depends on 9) The system of claim 9, wherein the detectors each have a wobbler pivot site wherein the detectors can attach to the wobbling ring at the wobbler pivot site. ### Claim 11 (depends on 10) The system of claim 10, wherein the gantry pivot site and the wobbling pivot site have a bearing so that the detectors may rotate freely. ### Claim 12 (depends on 10) The system of claim 10, wherein said arrangement further comprises a driver. ### Claim 13 (depends on 12) The system of claim 12, wherein said driver cooperates with the wobbling ring so that the wobbling ring can be rotated by the driver; wherein said wobbling ring cooperates with the detectors such that when rotated the detectors will pivot at the gantry pivot site and wobbler pivot site as the wobbling ring rotates, wherein the detectors can be synchronously rotated to multiple viewing angles to recover the full field of view. ### Claim 14 (depends on 13) The system of claim 13, wherein the wobbling ring can be rotated in either a clockwise or counterclockwise direction. ### Claim 15 A nuclear image detection system for detection of a full field of view of a target to be imaged, comprising: a plurality of detectors; a gantry; wherein the detectors are attached to the gantry in an arrangement such that the detectors can have multiple viewing angles of said target with respect to the gantry; and means for synchronously moving the detectors with respect to the gantry such that they can each be simultaneously moved to one of said multiple viewing angles whereby the full field of view can be recovered. ### Claim 16 (depends on 15) The system of claim 15, wherein the detectors have a first viewing angle and a second viewing angle; wherein the viewing angle of the detectors can be synchronously adjusted from the first viewing angle to the second viewing angle whereby the full field of view can be recovered. ### Claim 17 (depends on 15) The system of claim 15, wherein the detectors obtain detection readings continuously throughout said synchronous movement. ### Claim 18 A method for recovery of a full field of view of a target to be imaged by a nuclear medicine imaging system, comprising the steps of: providing multiple detectors on a gantry such that said detectors will be positioned at a predetermined distance from said field of view, wherein the detectors are attached to the gantry in a manner that allows said detectors to be moved to multiple viewing angles; and synchronously moving said detectors to different viewing angles with respect to said gantry such that said detectors simultaneously view said target from corresponding predefined viewing angles with respect to said gantry to recover a full field of view of said target from an otherwise truncated field of view if said detectors were not positionable to multiple viewing angles with respect to said gantry. ### Claim 19 (depends on 18) The method of claim 18, further comprising the step of continuously obtaining detection readings throughout detector movement across the field of view. ### Claim 20 (depends on 18) The method of claim 18, wherein the synchronous positioning utilizes a wobbling ring which cooperates with the detectors to affect their viewing positions. ### Claim 21 A nuclear imaging system for recovering a full field of view of a target to be imaged, comprising: a gantry; a wobbling ring; a plurality of detectors each having a gantry pivot site at which a detector is attached to said gantry and a wobbling pivot site at which a detector is attached to said wobbling ring; and a driver that rotates said wobbling ring with respect to said gantry such that as said wobbling ring rotates said plurality of detectors are synchronously pivoted about their respective gantry pivot sites to a plurality of imaging viewing angles so as to recover the full field of view of said target.