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arXiv · 1312.4291

Bin Mode Estimation Methods for Compton Camera Imaging

Shiro Ikeda·Hirokazu Odaka·Makoto Uemura·Tadayuki Takahashi·Shin Watanabe·Shin'ichiro Takeda
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Abstract

We study the image reconstruction problem of a Compton camera which consists of semiconductor detectors. The image reconstruction is formulated as a statistical estimation problem. We employ a bin-mode estimation (BME) and extend an existing framework to a Compton camera with multiple scatterers and absorbers. Two estimation algorithms are proposed: an accelerated EM algorithm for the maximum likelihood estimation (MLE) and a modified EM algorithm for the maximum a posteriori (MAP) estimation. Numerical simulations demonstrate the potential of the proposed methods.

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Shiro Ikeda, Hirokazu Odaka, Makoto Uemura, Tadayuki Takahashi, Shin Watanabe, Shin'ichiro Takeda. 2014-05-01. Bin Mode Estimation Methods for Compton Camera Imaging. https://doi.org/10.1016/j.nima.2014.05.081

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