RING TOPOLOGICAL STRUCTURE OF PET IMAGING SYSTEM AND IMPLEMENTATION METHOD THEREOF

摘要

The present invention relates to a ring topological structure of a PET imaging system and an implementation method thereof, which relate to the technical field of basic topology of PET, PET/CT and PET/MR medical imaging systems. Event conformation judging of a PET system is completed by a series of distributed conformation modules, the conformation modules are serially connected into a ring structure, and each conformation module is a node module on a link; and at least one node module is filtered out from the ring structure to take out a conforming event. Calculation volume and IO load of a conformation processing unit are greatly reduced, switching between production of a simple system and production of a complex system is implemented, and development and research efficiency is greatly improved. Production of the PET system presents a block building effect and three-ring, four-ring, five-ring and six-ring systems can be conveniently produced. Meantime, switching between high and low resolution and production switching of a small system of a small animal and a large system of a human body are implemented by increasing or reducing node quantity and changing size of crystal in a detector.