HIGH-GRADE NUCLEAR MEDICAL SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a method for collecting analog electric pulse signals generated by radiation events colliding with a detector crystal and detected by multiple detector units. SOLUTION: An image is formed based on multiple events, and the events are captured by multiple detector units 34. The collecting method includes a step that a linear reinforcement signal is added to an analog signal and the analog signal is converted into a digital signal, and the linear reinforcement signal is changed relatively slower as compared with the length of the analog signal pulse. A resolution reinforcement signal may be added to the analog signal before the analog signal is converted into the digital signal alternatively or additionally. The resolution reinforcement signal is changed relatively faster as compared with the length of the analog signal.