Accurate PET normalization correction method

• Main Authors: XIONG XIANHUA, ZENG HAINING, ZHAO MING
• Format: Patent
• Language: Chinese; English
• Published: 25.12.2018
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The invention discloses an accurate PET normalization correction method. The method comprises the steps of utilizing PET equipment for collecting data of a uniform source, acquiring normalized data, and obtaining efficiency factors of detectors; then processing the normalized data, obtaining the center of the uniform source, calculating a center deviation correction factor according to the positions of the detectors, correcting the efficiency factors of the existing detectors, and correcting the possible inconsistency between the center of the uniform source and the centers of detector rings.By means of the method, the problem of inconsistency between the center of the uniform source and the centers of the detector rings is solved, the operation difficulty of an operator is reduced, the irradiation time for the operator is shortened, and meanwhile the accuracy of the efficiency factors of detection units is improved. 本发明公开了种精准的PET归化校正方法。本发明利用PET设备对均匀源进行数据采集，获取归化数据，得到探测器的效率因子，然后对归化数据进行处理，获取均匀源的中心，再根据探测器的位置，计算得