The Physics of Diagnostic Imaging PDF

PREFACE

Perhaps the major problem associated with teaching the physics of diagnostic imaging is its changeability. Over the last thirty years radiology has seen dramatic improvements in non-invasive imaging using X-rays, gamma rays, high frequency sound, and high frequency radio waves. Over the last fifteen years the quality of these images has enabled visualization of early pathological changes both in anatomy and function. The last ten years has seen the emphasis change to low radiation dose techniques which demand more efficient imaging methods. To some extent these have been supplied by digital image capture using either position sensitive phosphors (computer radiography) or purely electronic detector techniques enabling direct visualization (direct radiography). With digital systems a truly film-less environment can exist providing easy and rapid transmission of images, patient information and quality control data across countries, continents, and oceans. This complex scenario provides difficulties when trying to understand modern developments, teach students or set examinations. This book introduces current methods, fundamental principles, and applications. The reader is encouraged to explore specialist publications armed with this basic information.