Internal/external coincident gamma camera system
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United States of America Patent
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N/A
Issued Date -
Feb 20, 2003
app pub date -
Jul 17, 2002
filing date -
Jul 20, 2001
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system and a method for obtaining an image of a body part within a body are provided. A radiotracer including Indium-111 is administered to the body part. The system includes a first gamma ray sensor and a second gamma ray sensor, each being configured to detect prompt gamma rays emitted by Indium-111. The first gamma ray sensor is positioned external to the body, and the second gamma ray sensor is positioned either internally within the body or within a body orifice or body cavity. A relative position of the second gamma ray sensor with respect to the first gamma ray sensor may be known. The respective detections of gamma rays by the first and second gamma ray sensors may be used to determine a distribution of radioactive source material in the body part. The radiotracer may also include a positron emitter. The first and second gamma ray sensors may be configured to detect substantially coincident gamma rays emitted as a result of a positron annihilation event.
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