Apparatus and method for computed tomography scanning using halfscan reconstruction with asymmetric detector system
Patent 5848117 Issued on December 8, 1998. Estimated Expiration Date: 
August 1, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
August 1, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesPlural source computerized tomography device with improved resolution Patent #: 4637040 InventorsAssigneeApplicationNo. 904516 filed on 08/01/1997US Classes:378/19, Beam detection system378/15, Continuous mechanical rotation378/901COMPUTER TOMOGRAPHY PROGRAM OR PROCESSORExaminersPrimary: Porta, David P.Assistant: Bruce, David V. Attorney, Agent or FirmInternational ClassA61B 006/03AbstractA method and apparatus for halfscan reconstruction in a CT scanning system using an asymmetric detector system are described. In halfscan asymmetric (HSA) reconstruction, a halfscan reconstruction approach is used for data acquired by the symmetric portion of the array, and a fullscan reconstruction approach is used to reconstruct data acquired by the asymmetric portion of the array. When scanning oversized subjects which extend beyond the symmetric field of view of the array, a halfscan reconstruction approach is used which applies a zero weighting to data acquired by the asymmetric portion of the array and ramps data acquired by the asymmetric portion to zero.Other References
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