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 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

CONTENTS

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