Patent ID: 6211523
Filing Date: 2001-04-03
Classification: A61B,G01T

Abstract:
A nuclear medicine gamma camera for diagnostic imaging comprising:a rotating gantry which defines a subject receiving aperture in which a subject is positioned;a number of detector heads movably attached to the rotating gantry, said detector heads being rotated about the subject with rotation of the rotating gantry;a number of radiation sources mounted to the detector heads such that penetrating transmission radiation from the radiation sources is directed toward and received by corresponding detector heads positioned across the subject receiving aperture from the radiation sources;translation means which translate the detector heads laterally along paths tangential to the subject receiving aperture, said paths residing in a plane which is transverse to a longitudinal axis of the subject receiving aperture; and,a contouring device which determines outer boundaries of the subject in response to the transmission radiation received by the detector heads and controls the translation means accordingly.