title: Assessment of a high-resolution candidate detector for prostate time-of-flight positron emission tomography.
abstract: We report on the measurements performed using a (22)Na 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 × 1.5 mm × 10 mm crystal size, are quite promising in view of the realization of a prototype probe.
authors.affiliation: INFN, Laboratori Nazionali del Sud, 95125 Catania, Italy.
authors.forename: Luigi
authors.initials: L
authors.lastname: Cosentino
authors.forename: Paolo
authors.initials: P
authors.lastname: Finocchiaro
authors.forename: Alfio
authors.initials: A
authors.lastname: Pappalardo
authors.forename: Franco
authors.initials: F
authors.lastname: Garibaldi
mesh_terms: D005240:Feasibility Studies; D006801:Humans; D008297:Male; D049268:Positron-Emission Tomography / Q000295:instrumentation*; D011467:Prostate / Q000000981:diagnostic imaging*; D012979:Sodium Radioisotopes; D013997:Time Factors
chemical_list: D012979:Sodium Radioisotopes