Patent ID: 7105825
Filing Date: 2006-09-12
Classification: A61B,G01T,G21K

Abstract:
1. A single photon emission computed tomography system for producing multiple tomographic images of the type representing a three-dimensional distribution of a photon-emitting radioisotope, the system comprising: a base including a patient support for supporting a patient such that a portion of the patient is located in a field of view, a longitudinal axis being defined through the field of view; a detector assembly adjacent the field of view, the detector assembly including a photon-responsive detector operable to detect if a photon strikes the detector, the detector assembly operable to detect photons emitted from the portion of the patient located in the field of view; a photon-blocking member disposed between the field of view and the detector, the blocking member having an aperture slot defined therethrough for passage of photons aligned with the aperture slot, a line of response being defined from the detector through the aperture; a collimating assembly including a plurality of collimating vanes formed of photon-attenuating material; a support assembly for supporting the collimating assembly, the support assembly including a first support member and a second support member, the second support member being spaced from the first support member, the collimating assembly being disposed between the support members such that a first distance is defined between the collimating assembly and the first support member and a second distance is defined between the collimating assembly and the second support member; and an adjustment assembly including a first adjustor operable to adjust the first distance and a second adjustor operable to adjust the second distance.