Performance comparison of two commercial BGO-based PET/CT scanners using NEMA NU 2-2001.
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| Title: | Performance comparison of two commercial BGO-based PET/CT scanners using NEMA NU 2-2001. |
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| Authors: | Bolard, Grégory1, Prior, John O.2, Modolo, Luca3, Bischof Delaloye, Angelika2, Kosinski, Marek3, Wastiel, Claude1, Malterre, Jérôme2, Bulling, Shelley1, Bochud, François1, Verdun, Francis R.1 |
| Source: | Medical Physics. Jul2007, Vol. 34 Issue 7, p2708-2717. 10p. 1 Diagram, 7 Charts, 6 Graphs. |
| Subjects: | Positron emission tomography, Diagnostic imaging, Medical electronics, Medical radiology, Medical imaging systems, Scanning systems |
| Abstract: | 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 18F 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. [ABSTRACT FROM AUTHOR] |
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| Database: | Engineering Source |
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