TY - JOUR
T1 - Basic imaging performance characteristics of a variable field of view pet camera using quadrant sharing detector design
AU - Uribe, Jörge
AU - Baghaei, Hossain
AU - Li, Hongdi
AU - Yokoyama, Shigeru
AU - Zhang, Nan
AU - Wang, Junming
AU - Dobbs, Frank R.
AU - Wong, Wai Hoi
N1 - Funding Information:
‘This work is supported in part by NIH Grant R01 CA58980,
Funding Information:
NIH Grant R01 CA61880, NIH Grant R01 CA76246, NIH Grant R01 CA58980S 1, Texas Higher Education Advanced Technology Grant, John S. Dunn Foundation Research Grant, and Cobb Foundation for Cancer Research.
PY - 1999
Y1 - 1999
N2 - The basic imaging performance of the prototype PET camera (MDAPET) developed in our laboratory was measured. The MDAPET was developed to test the engineering feasibility of two design concepts: (a) the photomultiplier-quadrant-sharing detector design and (b) a lower cost variable detector ring which forms a denselypacked smaller ring for imaging breast/brain/animals, and a less-packed ring for whole-body imaging. The basic imaging performance was measured for the 32 and 55 cm FOV with tests similar to those described in the SNM/NEMA performance standard [12]. For the 32 cm FOV, the transaxial image resolutions at 0, 5, 10 cm were found to be 2.8, 3.1, 4.0 mm, respectively, while for the 55 cm FOV, the image resolutions were 2.9, 3.1, 3.6 mm. The axial resolution ranged from 2.5 to 4.4 mm as a function of detector-ring position. For a 21.5-cm uniform phantom, the coincidence-detection sensitivity was 82.3 kcps/|iCi/cc at the smallest 32 cm field of view and 16.3 kcps/)j.Ci/cc for the whole body configuration. The scatter fractions were 19% and 30% for the whole-body mode and the brain/breast mode, respectively. The smaller mode has 2.4 times higher noise-equivalent-sensitivity than the larger mode at l(iCi/cc. High quality, artifact-free brainphantom images were obtained in both modes.
AB - The basic imaging performance of the prototype PET camera (MDAPET) developed in our laboratory was measured. The MDAPET was developed to test the engineering feasibility of two design concepts: (a) the photomultiplier-quadrant-sharing detector design and (b) a lower cost variable detector ring which forms a denselypacked smaller ring for imaging breast/brain/animals, and a less-packed ring for whole-body imaging. The basic imaging performance was measured for the 32 and 55 cm FOV with tests similar to those described in the SNM/NEMA performance standard [12]. For the 32 cm FOV, the transaxial image resolutions at 0, 5, 10 cm were found to be 2.8, 3.1, 4.0 mm, respectively, while for the 55 cm FOV, the image resolutions were 2.9, 3.1, 3.6 mm. The axial resolution ranged from 2.5 to 4.4 mm as a function of detector-ring position. For a 21.5-cm uniform phantom, the coincidence-detection sensitivity was 82.3 kcps/|iCi/cc at the smallest 32 cm field of view and 16.3 kcps/)j.Ci/cc for the whole body configuration. The scatter fractions were 19% and 30% for the whole-body mode and the brain/breast mode, respectively. The smaller mode has 2.4 times higher noise-equivalent-sensitivity than the larger mode at l(iCi/cc. High quality, artifact-free brainphantom images were obtained in both modes.
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U2 - 10.1109/23.775568
DO - 10.1109/23.775568
M3 - Article
AN - SCOPUS:0033321729
SN - 0018-9499
VL - 46
SP - 491
EP - 497
JO - IEEE Transactions on Nuclear Science
JF - IEEE Transactions on Nuclear Science
IS - 3 PART 2
ER -