TY - GEN
T1 - Performance characteristics of the high resolution research tomograph - Comparison of three prototypes
AU - De Jong, Hugo W.A.M.
AU - Knoess, Christof
AU - Lammertsma, Adriaan A.
AU - Lenox, Mark
AU - Vollmar, Stefan
AU - Casey, Mike
AU - Wienhard, Klaus
AU - Heiss, Wolf Dieter
AU - Boellaard, Ronald
PY - 2004/12/1
Y1 - 2004/12/1
N2 - The High Resolution Research Tomograph (HRRT) is the first PET scanner with depth of interaction (DOI) capability. Presently three different versions have been developed: one equipped with two 7.5 mm thick crystal layers (HRRT-DC), the second with only a single 7.5 mm crystal layer (HRRT-S) and the latest HRRT with two 10mm thick crystal layers (HRRT-D). In this study the performance of the new HRRT-D was assessed and compared with the other two HRRTs. The characteristics were measured according to the NEMA NU2 standards. Similar scatter fractions between all three scanners were observed. NEC rates of the HRRT-D were about 8 and 3 times higher than those of HRRT-S and HRRT-DC, respectively. However, spatial resolution of the new HRRT-D is somewhat lower than that of HRRT-DC and HRRT-S. Use of thicker crystals in the new HRRT-D improved the sensitivity and NECR performance significantly at the cost of only a small deterioration of the spatial resolution compared with the other HRRT designs.
AB - The High Resolution Research Tomograph (HRRT) is the first PET scanner with depth of interaction (DOI) capability. Presently three different versions have been developed: one equipped with two 7.5 mm thick crystal layers (HRRT-DC), the second with only a single 7.5 mm crystal layer (HRRT-S) and the latest HRRT with two 10mm thick crystal layers (HRRT-D). In this study the performance of the new HRRT-D was assessed and compared with the other two HRRTs. The characteristics were measured according to the NEMA NU2 standards. Similar scatter fractions between all three scanners were observed. NEC rates of the HRRT-D were about 8 and 3 times higher than those of HRRT-S and HRRT-DC, respectively. However, spatial resolution of the new HRRT-D is somewhat lower than that of HRRT-DC and HRRT-S. Use of thicker crystals in the new HRRT-D improved the sensitivity and NECR performance significantly at the cost of only a small deterioration of the spatial resolution compared with the other HRRT designs.
UR - http://www.scopus.com/inward/record.url?scp=23844481160&partnerID=8YFLogxK
M3 - Conference contribution
VL - 6
T3 - IEEE Nuclear Science Symposium Conference Record
SP - 3437
EP - 3439
BT - vu medical center
T2 - 2004 Nuclear Science Symposium, Medical Imaging Conference, Symposium on Nuclear Power Systems and the 14th International Workshop on Room Temperature Semiconductor X- and Gamma- Ray Detectors
Y2 - 16 October 2004 through 22 October 2004
ER -