CT at a Glance

The market–leading at a Glance series is popular among healthcare students and newly qualified practitioners, for its concise and simple approach and excellent illustrations.

Each bite–sized chapter is covered in a double–page spread with clear, easy–to–follow diagrams, supported by succinct explanatory text.

Covering a wide range of topics, books in the at a Glance series are ideal as introductory texts for teaching, learning and revision, and are useful throughout university and beyond.

Everything you need to know about CT... at a Glance!

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 24 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

Euclid Seeram, PhD, MSc, BSc, FCAMRT, has academic appointments in Medical Imaging and is Honorary Senior Lecturer in the Department of Radiology of the University of Sydney, Australia. In addition, he is Adjunct Associate Professor in the Faculty of Medicine, Nursing, and Health Sciences at Monash University, Australia; Adjunct Professor in the Faculty of Science, Charles Stuart University, Australia, and Adjunct Associate Professor in the Faculty of Health, University of Canberra, Australia.