Adac Laboratories, Inc.

Paul Vaska

Michael J Petrillo

A method and apparatus are provided for detecting scintillation events in a gamma camera detector using virtual photomultiplier tubes (PMTs). The gamma camera detector includes multiple real PMTs within the actual field of view of the detector as well as multiple virtual PMTs defined outside the actual field of view. In response to a scintillation event occurring near the edge of the field of view, one of the real PMTs responding to the event is identified. The event is then mapped to one or more virtual PMTs based on the identified real PMT. Data representing a response of the virtual PMT is then generated based on a response of a corresponding one of the real PMTs. Data representing responses of both the affected real PMTs and selected ones of the virtual PMTs are used in a centroid computation for the event, to increase the effective field of view of the detector.

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Ridley Park, PA, United States of America

Paul Vaska