A hybrid positron scanner

Abstract

A hybrid positron scanner, which combines the simplicity of a mechanical scanner with the increased sensitivity of a large area array, has been designed utilizing nine crystal pairs and 25 coincidence circuits. This technique has the advantage over single-pair positron systems in that greatly increased source activity may be viewed. The instrument functions reliably in clinical studies and has proven useful in supplying data for computer studies of radioisotope scan data processing. Valuable experience with multi-detector systems and fast timing techniques has been gained.