Comparison of scintillators for positron emission mammography (PEM) systems
Positron emission mammography (PEM) has promise as an effective method for the detection of breast lesions. Perhaps the most significant design feature of a PEM system is the choice of scintillator material. In this investigation we compared three scintillators for use in PEM: NaI(Tl), gadolinium oxyorthosilicate (GSO), and lutetium-gadolinium oxyorthosilicate (LGSO). The PEM systems consisted of two 30/spl times/30 arrays of pixelated scintillators (3/spl times/3/spl times/10 mm/sup 3/ for GSO and LGSO and 3/spl times/3/spl times/19 mm/sup 3/ for NaI(Tl)) coupled to arrays of square position-sensitive photomultiplier tubes. The Compton scatter fraction, system energy resolution, spatial resolution, spatial resolution uniformity, and detection sensitivity were compared. Compton scatter fractions for the systems were comparable, between 8% and 9%. The NaI(Tl) system produced the best system energy resolution (18.2%), the GSO system had the worst system energy resolution (28.7%).
- Research Organization:
- Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
- Sponsoring Organization:
- USDOE Office of Energy Research (ER) (US)
- DOE Contract Number:
- AC05-84ER40150
- OSTI ID:
- 834837
- Report Number(s):
- JLAB-PHY-03-56; DOE/ER/40150-3001; IETNAE; TRN: US0407349
- Journal Information:
- IEEE Transactions on Nuclear Science, Vol. 50, Issue 1; Other Information: IEEE Transactions on Nuclear Science, Volume 50, Issue 1, Page(s) 42 - 49; PBD: 1 Feb 2003; ISSN 0018-9499
- Country of Publication:
- United States
- Language:
- English
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