RT Journal Article
SR Electronic
T1 PET Performance Measurements for an LSO-Based Combined PET/CT Scanner Using the National Electrical Manufacturers Association NU 2-2001 Standard
JF Journal of Nuclear Medicine
JO J Nucl Med
FD Society of Nuclear Medicine
SP 813
OP 821
VO 45
IS 5
A1 Erdi, Yusuf E.
A1 Nehmeh, Sadek A.
A1 Mulnix, Tim
A1 Humm, John L.
A1 Watson, Charles C.
YR 2004
UL http://jnm.snmjournals.org/content/45/5/813.abstract
AB Results of performance measurements for a lutetium oxyorthosilicate (LSO)-based PET/CT scanner using new National Electrical Manufacturers Association (NEMA) NU 2-2001 standards are reported. Methods: Performance measurements following the NU 2-2001 standards were performed on an LSO-based PET/CT scanner. In addition, issues associated with the application of the NEMA standard to LSO-based tomographs in the presence of intrinsic radiation are discussed. Results: We report on some difficulties experienced in following the suggested NEMA measurement techniques and describe alternative approaches. Measurements with the new standard (as compared with NU-1994) incorporate the effects of activity outside the scanner and facilitate measurements of the entire axial field of view. Realistic clinical conditions are also simulated in image quality measurements of a torso phantom. Conclusion: We find that, with appropriate modifications, NU 2-2001 can be successfully applied to LSO-based scanners.