Chapter 2

Monte Carlo Modeling of X-Ray Detectors for Medical Imaging

Yuan Fang, Karim S. Karim, and Aldo Badano

2.1 Introduction

Semiconductor X-ray detectors are important components of medical imaging systems and are used in a wide range of modalities including general radiography, full-field digital mammography [1], and computed tomography [2]. Characterization of semiconductor X-ray detectors provides insight into performance limitations and guides the development and optimization of imaging systems. By employing semiconductive materials to convert X-rays directly into electric signals, these detectors allow for good energy resolution, high efficiency, and high carrier yield [3].

Monte Carlo (MC) simulation is a statistical numerical technique ...

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