Purpose: We characterize the performance of a dualsided position-sensitive sparse sensor (DS-PS3) array detector for positron emission tomography (PET). The DS-PS3 detector is designed as a high performance, cost effective PET detector for organ-specific imaging systems (e.g., brain, breast, etc.). Methods: Two sparse 4-by-4 arrays of silicon photomultipliers (18.5% SiPM fill-factor) coupled through segmented light guide are used to readout a 15-by-15 array of 2-mm-pitch, 20-mm-long LSYO crystals. Uniform flood data were used for crystal identification, depth determination, and position-dependent energy resolution. Intrinsic-spatial and depth-of-interaction (DOI) resolutions were determined by stepping a collimated gamma-ray source over the front and side, respectively. Results: We measured an average intrinsic spatial resolution of 2.14 ± 0.07 mm full width at half maximum (FWHM). DOI FWHM resolution varied from 2.2 mm for crystals over sensors to 5.3 mm for crystals between sensors. Average DOI resolution was 3.6 ± 0.8 mm FHWM. Average energy resolution for the detector module was 16.6% with a range of 11.3% to 25.8%. Conclusions: We have demonstrated use of a dual-sided sparse sensor arrays to enable low-cost high-performance decoding of three-dimensional positioning within a PET detector using an 18.5% sensor fill-factor.
Purpose: We characterize the performance of a dualsided position-sensitive sparse sensor (DS-PS3) array detector for positron emission tomography (PET). The DS-PS3 detector is designed as a high performance, cost effective PET detector for organ-specific imaging systems (e.g., brain, breast, etc.). Methods: Two sparse 4-by-4 arrays of silicon photomultipliers (18.5% SiPM fill-factor) coupled through segmented light guide are used to readout a 15-by-15 array of 2-mm-pitch, 20-mm-long LSYO crystals. Uniform flood data were used for crystal identification, depth determination, and position-dependent energy resolution. Intrinsic-spatial and depth-of-interaction (DOI) resolutions were determined by stepping a collimated gamma-ray source over the front and side, respectively. Results: We measured an average intrinsic spatial resolution of 2.14 ± 0.07 mm full width at half maximum (FWHM). DOI FWHM resolution varied from 2.2 mm for crystals over sensors to 5.3 mm for crystals between sensors. Average DOI resolution was 3.6 ± 0.8 mm FHWM. Average energy resolution for the detector module was 16.6% with a range of 11.3% to 25.8%. Conclusions: We have demonstrated use of a dual-sided sparse sensor arrays to enable low-cost high-performance decoding of three-dimensional positioning within a PET detector using an 18.5% sensor fill-factor.
Authors: L Moliner; A J Gonzalez; A Soriano; F Sanchez; C Correcher; A Orero; M Carles; L F Vidal; J Barbera; L Caballero; M Seimetz; C Vazquez; J M Benlloch Journal: Med Phys Date: 2012-09 Impact factor: 4.071
Authors: Kira S Grogg; Terrence Toole; Jinsong Ouyang; Xuping Zhu; Marc D Normandin; Quanzheng Li; Keith Johnson; Nathaniel M Alpert; Georges El Fakhri Journal: J Nucl Med Date: 2015-12-23 Impact factor: 10.057
Authors: Yibao Wu; Spencer L Bowen; Kai Yang; Nathan Packard; Lin Fu; George Burkett; Jinyi Qi; John M Boone; Simon R Cherry; Ramsey D Badawi Journal: Phys Med Biol Date: 2009-06-17 Impact factor: 3.609
Authors: Deep K Hathi; Wen Li; Youngho Seo; Robert R Flavell; John Kornak; Benjamin L Franc; Bonnie N Joe; Laura J Esserman; Nola M Hylton; Ella F Jones Journal: Sci Rep Date: 2020-12-14 Impact factor: 4.379