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Performance comparison of two commercial BGO‐based PET/CT scanners using NEMA NU 2‐2001
Author(s) -
Bolard Grégory,
Prior John O.,
Modolo Luca,
Bischof Delaloye Angelika,
Kosinski Marek,
Wastiel Claude,
Malterre Jérôme,
Bulling Shelley,
Bochud François,
Verdun Francis R.
Publication year - 2007
Publication title -
medical physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.473
H-Index - 180
eISSN - 2473-4209
pISSN - 0094-2405
DOI - 10.1118/1.2739808
Subject(s) - nuclear medicine , positron emission tomography , medical physics , image resolution , scanner , image quality , pet ct , medicine , coincidence , computer science , artificial intelligence , pathology , image (mathematics) , alternative medicine
Combined positron emission tomography and computed tomography (PET/CT) scanners play a major role in medicine for in vivo imaging in an increasing number of diseases in oncology, cardiology, neurology, and psychiatry. With the advent of short‐lived radioisotopes other than F18 and newer scanners, there is a need to optimize radioisotope activity and acquisition protocols, as well as to compare scanner performances on an objective basis. The Discovery‐LS (D‐LS) was among the first clinical PET/CT scanners to be developed and has been extensively characterized with older National Electrical Manufacturer Association (NEMA) NU 2‐1994 standards. At the time of publication of the latest version of the standards (NU 2‐2001) that have been adapted for whole‐body imaging under clinical conditions, more recent models from the same manufacturer, i.e., Discovery‐ST (D‐ST) and Discovery‐STE (D‐STE), were commercially available. We report on the full characterization both in the two‐ and three‐dimensional acquisition mode of the D‐LS according to latest NEMA NU 2‐2001 standards (spatial resolution, sensitivity, count rate performance, accuracy of count losses, and random coincidence correction and image quality), as well as a detailed comparison with the newer D‐ST widely used and whose characteristics are already published.