CT at a Glance

Description

CT at a Glance gets readers quickly up to speed with the core knowledge and competencies required for computed tomography (CT) scanning, as established by the major radiography organizations around the world, including the ASRT and the CAMRT. This brand new title describes the basic science behind CT with an emphasis on the theory that is essential for practice. Featuring an abundance of illustrations, succinct, straightforward explanations and clear, step-by-step guidance, it includes the fundamental physics, technical principles, and imaging strategies and procedures involved in CT scanning. Over the course of twenty four, concise modular chapters, CT at a Glance covers all the bases for entry-to-practice students, including: The basic physics underlying CT scanning State-of-the-art multi-slice technologies Data acquisition strategies Equipment components—their functions and applications Image reconstruction and image quality control CT dose and dose optimization procedures Quality control fundamentals CT at a Glance is an indispensable learning resource for students in medical imaging technology courses, including those covering radiography, nuclear medicine, and radiation therapy, as well as for biomedical engineering technology students. Foreword, viii Preface, ix Acknowledgements, x 1 Computed tomography: an overview 2 2 Major components of a CT scanner 6 3 How CT scanners work 9 4 Data acquisition principles 12 5 X-ray tubes and generator technologies 15 6 X-ray beam filtration and collimation 18 7 Essential physics: radiation attenuation 21 8 Attenuation measurements and CT numbers 24 9 CT detector technology basics 27 10 CT image reconstruction basics 30 11 CT image display and storage 33 12 CT and picture archiving and communication systems (PACS) 36 13 CT image postprocessing 38 14 Multislice CT – essential principles: part 1 42 15 Multislice CT – essential principles: part 2 46 16 Image quality: part 1 50 17 Image quality: part 2 – spatial resolution 53 18 Image quality: part 3 – contrast resolution 56 19 Image quality: part 4 – noise 59 20 Image quality: part 5 – artifacts 62 21 CT dose optimization: part 1 65 22 CT dose optimization: part 2 68 23 Optimization of radiation protection in CT 70 24 CT quality control basics 73 Index, 76