Speaker
Mr
junichi ohi
(shimadzu)
Description
Recently, small animal depth of interaction (DOI) PET systems are being researched
and developed in a variety of laboratories and companies. In this study, we were
conducting basic research on a whole-body DOI-PET system which provides spatial
resolution that is both high and uniform, and also minimizes costs. The detectors
used consist of double-layer 9×10 GSO/GSO crystal blocks, a specially-designed
light guide and two rectangular double anode type PMTs. Individual crystal sizes are
2.45×5.1×15mm3, and each layer of crystal blocks has a different decay time. Many
of the circuit boards used in our current conventional PET system (SET-3000G
SHIMADZU Japan) have been optimized for DOI acquisition. The detectors are arranged
to form a 332.5mm radius detection ring, and spatial resolution is obtained from a
center to 250mm radius field of view (FOV). The effect of DOI was confirmed using a
comparison with the non-DOI system.
Author
Mr
junichi ohi
(shimadzu)