Patent ID: 7361903
Filing Date: 2008-04-22
Classification: G01T

Abstract:
1. A radiographic imaging system comprising: a means for detecting emission radiation emitted by a radioisotope injected into a subject, the detecting means arranged around a circular bore, the bore having an entrance and an exit; a means for shielding the detecting means from the emission radiation originating outside of the bore, the shielding means including at least one rigid radiation opaque shield rigidly mounted to one of the entrance and the exit of the bore, the shield extending from an outer periphery of the bore toward and surrounding a central axis of the bore and defining a fixed non-circular subject receiving aperture; and a subject support means that support the subject in the aperture, the subject support means including: wherein at least one shield defines a bottom boundary of the aperture disposed underneath the support means, which bottom boundary conforms to the shape of the bottom surface.