Semiconductor gamma-ray camera and medical imaging system

摘要

An imaging system including an imaging head, a signal processor, a data acquisition system, and an image processing computer is disclosed. The imaging head includes a detector and an aperture for detecting the radiation to the detector. The detector comprises a plurality of closely-packed detection modulus (206) comprising a plurality of detection elements (212) mounted to a circuit carrier (214) which includes channels for conditioning and preprocessing the electrical pulses produced when a detection element absorbs radiation. The amplitude of the pulse is indicative of the magnitude of the radiation absorbed. The detection modules employ a full-through circuit to automatically find valid events, i.e., only those detection elements having a stored amplitude exceeding a predetermined threshold.