chapter  9
18 Pages

◾ Characterisation and Quality Assurance Protocols for SFOV Gamma Cameras

WithS.L. BUGBY, JOHN E. LEES AND ALAN C. PERKINS

CONTENTS 9.1 Introduction 172 9.2 Unique Challenges in Characterising SFOV Gamma Cameras 172

9.2.1 Detector Size 173 9.2.2 Pinhole Collimation 175 9.2.3 Improved Spatial Resolution 176

9.3 Characterisation Protocol for SFOV Cameras 176 9.3.1 Intrinsic Spatial Resolution 177 9.3.2 System Spatial Resolution 177 9.3.3 Intrinsic Spatial Linearity 179 9.3.4 Spatial Uniformity 179 9.3.5 Sensitivity 181 9.3.6 Count Rate Capability 181 9.3.7 Energy Resolution 182

9.4 SFOV Specic Tests 182 9.5 Quality Assurance Testing 184

9.5.1 Suggested SFOV QA Scheme 184 9.6 Summary and Conclusions 185 References 186

9.1 INTRODUCTION Small eld of view (SFOV) gamma cameras are now used in a number of diagnostic and interventional procedures (Perkins and Hardy 1996, Duch 2011). As a medical tool, it is vitally important that the performance of these systems can be tested in a quantitative and repeatable way.