TY - GEN
T1 - Basic imaging performance characteristics of a variable field of view PET camera using quadrant sharing detector design
AU - Uribe, Jorge
AU - Baghaei, Hossain
AU - Li, Hongdi
AU - Yokoyama, Shigeru
AU - Zhang, Nan
AU - Wang, Junming
AU - Dobbs, Frank R.
AU - Wong, Wai Hoi
N1 - Copyright:
Copyright 2004 Elsevier Science B.V., Amsterdam. All rights reserved.
PY - 1999
Y1 - 1999
N2 - A prototype PET camera has been developed to test the engineering feasibility and application utility of two concepts: (a) a low cost, high resolution detector where each PMT decodes the detection positions for four crystal blocks, and (b) a cheaper variable detector ring which forms a densely-packed ring with a small field of view (FOV) for high sensitivity study of the breast/brain/animals, or a less-packed ring with a large FOV for the whole-body. Design parameters are: (a) BGO detector pitch = 2.66-mm transaxial and 2.75 mm axial, (b) PMT diameter = 19 mm, (c) 27 image slices 1.4 mm apart, (d) transaxial FOV = 32 to 55 cm, (e) axial FOV = 3.85 cm, and (f) maximum detector rotation 45°. The basic imaging performance has been measured for the 32 and 55 cm FOV. For the 32 cm FOV, the transaxial average resolution at 0, 5, 10 cm were found to be 2.8, 3.1, 4.0 mm, respectively, while for the 55 cm FOV, the average resolutions were 2.9, 3.1, 3.6 mm. For a 22.2-cm phantom, the detection sensitivity was 82.3 kcps/μCi/cc at the smallest FOV and 16.3 kcps/μCi/cc for the whole body configuration.
AB - A prototype PET camera has been developed to test the engineering feasibility and application utility of two concepts: (a) a low cost, high resolution detector where each PMT decodes the detection positions for four crystal blocks, and (b) a cheaper variable detector ring which forms a densely-packed ring with a small field of view (FOV) for high sensitivity study of the breast/brain/animals, or a less-packed ring with a large FOV for the whole-body. Design parameters are: (a) BGO detector pitch = 2.66-mm transaxial and 2.75 mm axial, (b) PMT diameter = 19 mm, (c) 27 image slices 1.4 mm apart, (d) transaxial FOV = 32 to 55 cm, (e) axial FOV = 3.85 cm, and (f) maximum detector rotation 45°. The basic imaging performance has been measured for the 32 and 55 cm FOV. For the 32 cm FOV, the transaxial average resolution at 0, 5, 10 cm were found to be 2.8, 3.1, 4.0 mm, respectively, while for the 55 cm FOV, the average resolutions were 2.9, 3.1, 3.6 mm. For a 22.2-cm phantom, the detection sensitivity was 82.3 kcps/μCi/cc at the smallest FOV and 16.3 kcps/μCi/cc for the whole body configuration.
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M3 - Conference contribution
AN - SCOPUS:0032596358
SN - 0780350227
T3 - IEEE Nuclear Science Symposium and Medical Imaging Conference
SP - 1109
EP - 1115
BT - IEEE Nuclear Science Symposium and Medical Imaging Conference
PB - IEEE
T2 - Proceedings of the 1998 IEEE Nuclear Science Symposium Conference Record
Y2 - 8 November 1998 through 14 November 1998
ER -