Patent ID: 6329657
Filing Date: 2001-12-11
Classification: A61B,G01T

Abstract:
A coincidence transmission source for accomplishing attenuation data collection relative to coincident activity from a radiation source associated with a tomograph device having at least one imaging head, the imaging head having at least one imaging detector positioned to define a field of view and to collect emission data using a time coincidence method, said tomograph device defining a patient opening within the field of view, said coincidence transmission source comprising:a radiation source positioned with respect to the tomograph device such that gamma radiation therefrom illuminates at least one imaging detector on the tomograph device; andan attenuation detector positioned outside the patient opening for acquiring attenuation data relative to said radiation source simultaneously with emission data collected by each imaging detector, said attenuation data being collected using a time coincidence method, said attenuation detector being independent from the at least one imaging detector and being fixed relative to and illuminated by said radiation source.