کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9845322 1526512 2005 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
High spatial resolution measurement of depth-of-interaction of a PET LSO crystal
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
High spatial resolution measurement of depth-of-interaction of a PET LSO crystal
چکیده انگلیسی
A new type of experimental technique to investigate the depth-of-interaction (DOI) dependence in small scintillator elements designed for high-resolution animal PET is tested. An Oxford-type nuclear microprobe was used to irradiate a lutetium oxyorthosilicate (LSO) crystal (2×2×10 mm3) with a highly focused, (few micrometers diam.), 2 MeV He+ beam. Pulse height spectra from a PMT attached to one end of the LSO crystal were collected in list mode. By scanning the beam over the crystal high-resolution 2D-images are generated and thus the DOI effect in the scintillator could be investigated. The obtained results of the overall DOI dependence confirm previous findings using γ-rays. Since the present experimental setup allows obtaining data with several orders of magnitude better spatial resolution than with collimated γ-beam, the method can be applied for variety of problems where high spatial resolution is required.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 546, Issues 1–2, 1 July 2005, Pages 33-36
نویسندگان
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