RT Journal Article
SR Electronic
T1 Improved SSS-PQS heptahedron block development for low-cost-ultra-high resolution MuPET
JF Journal of Nuclear Medicine
JO J Nucl Med
FD Society of Nuclear Medicine
SP 1954
OP 1954
VO 52
IS supplement 1
A1 Ramirez-Jaramillo, Rocio
A1 An, Shaohui
A1 Liu, Shitao
A1 Zhang, Yuxuan
A1 Li, Hongdi
A1 Baghaei, Hossain
A1 Wang, Chao
A1 Wong, Wai-Hoi
YR 2011
UL http://jnm.snmjournals.org/content/52/supplement_1/1954.abstract
AB 1954 Objectives To built a low-cost/high-performance MD Anderson Murine PET (MUPET) detector system. Methods The detector system consist of a zero gap ring with 180 PQS-SSS blocks. Each block has 13 × 13 crystal array. Edge crystals are 1.76 mm wide, and the inner crystals 1.32 mm wide. Rectangular blocks were ground into heptahedron shaped blocks with a taper angle of 6° on the edge crystals and optical surfaces. We explored the possibility of increasing the detector’s performance by implementing new design, materials, and production techniques; testing the detector’s performance; and measuring the detector’s timing resolution. Results Heptahedron-detector-block performance: packing fraction,95%; 169 crystal clearly decoded per PMT; peak-to-valley ratio, 2.4; light collection efficiency, 78%; energy resolution, 14% at 511 keV; and averaged (single crystal to block) coincidence timing resolution, 430 ps. Conclusions Our detector design indicates that it is feasible to construct a high resolution (~1.2 mm) MuPET detector ring using round 19 mm PMTs instead of the more expensive position sensitive PMTs or solid state detectors