کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1828447 1027432 2008 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
DOI resolution measurement and error analysis with LYSO and APDs
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم ابزار دقیق
پیش نمایش صفحه اول مقاله
DOI resolution measurement and error analysis with LYSO and APDs
چکیده انگلیسی

Spatial resolution degradation in PET occurs at the edge of Field Of View (FOV) due to parallax error. To improve spatial resolution at the edge of FOV, Depth-Of-Interaction (DOI) PET has been investigated and several methods for DOI positioning were proposed. In this paper, a DOI–PET detector module using two 8×4 array avalanche photodiodes (APDs) (Hamamatsu, S8550) and a 2 cm long LYSO scintillation crystal was proposed and its DOI characteristics were investigated experimentally. In order to measure DOI positions, signals from two APDs were compared. Energy resolution was obtained from the sum of two APDs’ signals and DOI positioning error was calculated. Finally, an optimum DOI step size in a 2 cm long LYSO were suggested to help to design a DOI–PET.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment - Volume 591, Issue 1, 11 June 2008, Pages 84–87
نویسندگان
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