Patent ID: 7312438
Filing Date: 2007-12-25
Classification: A61B,G01T

Abstract:
1. A positron emission tomography, comprising: a plurality of radiation detectors arranged around a bed supporting an object to be inspected; a plurality of signal processing apparatuses each connected to each of said plurality of radiation detectors; a test signal generator for outputting test signals to a plurality of said signal processing apparatuses; a plurality of gate apparatuses for transferring said test signals, said gate apparatuses connected to said test signal generator and individually connected to a plurality of said signal processing apparatuses; a controller for controlling open and close of a pair of said gate apparatuses on the basis of combination information of a pair of said signal processing apparatuses, said gate apparatuses paired being connected to said signal processing apparatuses paired respectively, one of said signal processing apparatuses paired being previously set as a reference and the other being previously set as a signal processing apparatus to be calibrated; a calibration data generator for generating timing calibration data for each of said signal processing apparatuses on the basis of outputs of said signal processing apparatuses paired, said outputs generated based on said test signals each input to each of said signal processing apparatuses paired; and timing correction means for correcting timings of radiation detection signals output from said radiation detectors on the basis of said timing calibration data.