General Electric Company

University of Texas System

Dershan Luo

David Leo McDaniel

John Jay Williams

Michael Joseph Cook

Mark Kenneth Limkeman

Mark P Feilen

Edwin L Oswalt

Steven Gerald Kohlmyer

Tinsu Pan

Dennis Patrick Hurley

Osama Mawlawi

Embodiments of the present invention provide the use of average CT (ACT) to match the temporal resolution of CT and PET to enhance PET imaging and evaluated tumor quantification with HCT and ACT. For example, an embodiment of a method of enhanced PET imaging on a PET/CT scanner includes generating an average CT scan responsive to 4D CT emission image data to thereby correct attenuation in PET emission image data. Another embodiment of a method of attenuation correction in a PET/CT scan includes averaging a plurality of consecutive low dose CT images of approximately one breathing cycle to thereby obtain an average CT.

System, program product, and methods for attenuation correction of emission data on PET/CT and SPEC/CT

A method of calibrating detectors in a detector ring of a PET scanner, each detector including a plurality of crystals, the PET scanner having a field of view, is disclosed. The method comprises collecting timing data indicative of coincidence events occurring between each pair of crystals within the field of view. The method further comprises determining a detector adjustment value for each detector, determining a crystal adjustment value for each crystal in each detector, and discretizing the crystal adjustment value for each crystal to produce a discretized crystal adjustment value for each crystal. Lastly, the method comprises calibrating each detector by applying the discretized crystal adjustment value for each crystal in each detector to the collected timing data indicative of coincidence events.

Crystal-based coincidence timing calibration method

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Brookfield, WI, United States of America

Dershan Luo