Physical performance of a prototype 3D PET scanner using CdTe detectors

We developed a prototype 3D PET scanner that uses CdTe semiconductor detectors. The scanner is dedicated to human brain imaging. A semiconductor detector should have advantages when used as a PET detector (e.g. good quantitative imaging and high-spatial resolution). The detectors incorporate three important technical features: stacked crystals, no contact with the board, and direct soldering onto the board. Our scanner comprises 18 detector...