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US 9,870,627 B2Granted
System and method for limited angle positron emission tomography
AssigneeThe General Hospital Corporation
InventorsGeorges El Fakhri, Quanzheng Li
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Abstract
Described here are systems and methods for reconstructing images from limited angle positron emission tomography (“PET”) data acquired using a PET system with a partial-ring detector configuration, such as an in-beam PET system. The reconstruction process is specifically designed to account for the limited angular coverage of the partial-ring detector by implementing a reduced angle system matrix in an iterative reconstruction process.
Claims13
A method for reconstructing an image from limited angle positron emission tomography (PET) data, the steps of the method comprising:
- (a) providing limited angle PET data to a computer system, the limited angle PET data indicating gamma ray activity in a subject;
- (b) selecting a reduced angle system matrix that includes rows associated with only view angles represented in the limited angle PET data;
- and
- (c) iteratively reconstructing the image from the limited angle PET data by iteratively solving an optimization problem that includes the selected reduced angle system matrix.
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