Assessment of a high-resolution candidate detector for prostate time-of-flight positron emission tomography

作者：Cosentino Luigi^*; Finocchiaro Paolo; Pappalardo Alfio; Garibaldi Franco

来源：Review of Scientific Instruments, 2012, 83(11): 114301.

DOI：10.1063/1.4765705

We report on the measurements performed using a Na-22 source on a detector element for a magnetic resonance imaging-compatible time-of-flight-positron emission tomography endorectal prostate probe, with depth-of-interaction sensitivity. It is made from a LYSO scintillator crystal, wrapped with Lumirror, readout at both ends by means of silicon photomultipliers. With a detailed description of the data analysis procedure, we show that our results point to a 400 ps coincidence resolving time and, at the same time, to a depth-of-interaction resolution of 1 mm. These appealing features, along with the tiny 1.5 mm x 1.5 mm x 10 mm crystal size, are quite promising in view of the realization of a prototype probe.

• 出版日期2012-11