Use of Hybrid collimation for Interleaved Emission and Transmission Scans for SPECT
AssigneeDigirad Corporation
InventorsChuanyong Bai, Richard Louis Conwell
Life of this patent
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Abstract
Two different collimation geometries are interleaved. Each collimation geometry samples a transaxial slice through the object being imaged. The even slices are of the same fan-beam geometry as the central head, but the odd slices are of different collimation geometry. Each slice covers an axial range that is the same as the pixel size of the solid-state detector, and aligns with the corresponding pixels in the axial direction.
Claims17
A method comprising:
- using a plurality of collimators which have interleaved collimation geometries including a first collimation geometry that has a fan beam geometry and a second collimation geometry that carries out a different scanning geometry;
- at a first plurality of times, using said collimators in said first geometry to sample an object and obtain data about the object into at least one detector head;
- and
- at a second plurality of times, using said collimators in said second geometry to sample a different slice of information through the object being imaged into at least one detector head.
A medical scanner having plural different scanning heads having two different interleaved collimation geometries, where each collimation geometry samples a transaxial slice through an object being imaged, including a first plurality of slices through the object that points toward a transmission line source, and a second plurality of slices, which have a different collimation geometry, pointing to an organ of interest.
A medical scanner system that operates to carry out a transmission scan interleaved with an emission scan.
A medical system carrying out an emission scan with a large field of view simultaneously with an emission scan of an organ of interest with small field of view but higher sensitivity.
Dependencies are inferred from the claim text.