Development of ~(99m)Tc Imaging Method Using Multiple Imaging Plates for Reduction of Patient’s Dose

摘要

A system for taking static thyroid ~(99m)Tc images was devised by using multiple imaging plates (IPs)and a low energy high resolution collimator. Sensitivity was represented by using lower detection limits (LDL).The sensitivity and resolution of IP systems using a collimator and 9 IPs were determined by using a 20 mlthyroid phantom, and compared with the sensitivity of gamma cameras. The sensitivity of the IP systemsincreased in proportion to the number of IPs. The sensitivity and resolution of a probe using 9 IPs and a highresolution collimator were equivalent to or superior to the gamma camera for taking static thyroid ~(99m)Tc images.IP systems can be applied clinically as static nuclear imaging devices as same as a gamma camera.