Biological and Medical Sensor Technologies

12 Spatial and Spectral Resolution of Semiconductor Detectors in Medical Imaging

Björn Heismann

CONTENTS

12.1     Introduction

12.2     Detector Physics

12.2.1     Indirect and Direct Conversion Detectors

12.2.2     Signal Transport Processes

12.3     Spatial Resolution

12.3.1     Definition of the Modulation Transfer Function

12.3.2     Simulation and Measurement of the MTF

12.3.3     Properties of the MTF

12.4     Spectral Resolution

12.4.1     Definition of the DRF

12.4.2     Comparison of the DRFs

12.4.3     Integrating Indirect Conversion Detectors

12.4.4     Counting Direct Conversion Detectors

12.5     Conclusions

References

12.1 Introduction

Medical imaging devices commonly use gamma and x-ray radiation to generate internal images of ...