Quality control calibration method and system for single-photon emission tomography equipment

• Main Authors: LIU MAI, JIANG NIANMING, CHEN SI, GAO LILEI, LIU YAQIANG, LIN JINGUI, LUO GANG
• Format: Patent
• Language: Chinese; English
• Published: 24.11.2017
• Subjects: MEASUREMENT OF NUCLEAR OR X-RADIATION; MEASURING; PHYSICS; TESTING

The invention discloses a quality control calibration method and system for single-photon emission tomography equipment. The method comprises a step of placing a uniform surface source model with the injection of target nuclide at the front surface of a single-photon emission tomography equipment probe with a collimator, a step of collecting original data of output digital signal amplitude and time information of each independent channel, a step of obtaining a gain pre-correction coefficient according to a method of comparison a reference and correcting the output original data of each channel, a step of collecting corresponding data according to needs to complete the gain correction and energy correction calibration operations of a detected, and a step of realizing probe energy resolution and scale factor quality control calibration through introducing one or more characteristic energy peaks of a collimator or detector composition material on the basis of not increasing radiation source types. According to t