This book explains every aspect of the role of radiographers in performing CT colonography (CTC) and interpreting CTC images with the aim of enabling radiographers to extend the scope of their practice. It provides all the information required with respect to procurement of informed consent, principles of CT and radiation dose, patient preparation and positioning, the use of contrast media, the performance of diagnostic and screening CTC studies, and the interpretation and reporting of images. A wide range of CTC findings are described and depicted, covering normal anatomy, artifacts, hemorrhoids, polyps, colon cancer, diverticular disease, lipomas, and extracolonic structures. In addition, a chapter focusing on self-assessment of image interpretation will aid learning. The rising number of CTC studies for colon disorders is adding to an already burdened radiology workload. To reduce this workload, radiographers will increasingly be given responsibility to carry out CTC examinationsand this book will provide the support that they need in order to perform CTC studies to the standard required.
Table des matières
Dedication.- Foreword.– Preface.- Acknowledgements.- Table of Contents.- List of contributors.- List of abbreviations.- Introduction.- Patient-centred communication.- Informed consent.- Principles of computed tomography (CT).- Principles of radiation dose in computed tomography and computed tomography colonography.- Dose optimisation in CT colonography.- Overview of CT colonography in imaging the colon.- Role of contrast media in CTC: types, usage and allergic reactions.- Patient preparation, including bowel preparation, the role of tagging, and methods of colonic insufflation.- CTC technique and methods of interpreting images.- Anatomy of the colon.- Pitfalls and artefacts.- Internal haemorrhoids and other anorectal lesions.- Polyps.- The adenoma-carcinoma sequence, management and treatment of colon cancer.- Diverticular disease.- Lipomas of the colon.- Extracolonic findings.- Good practice in CT colonography reporting.- Ultrasound, magnetic resonance imaging, and positron emission tomography in the evaluation of colon cancer.- Legal and professional requirements of radiographer reporting: a framework for practice.- Self-assessment of CT colonography images.- Glossary.- Index.
A propos de l’auteur
Joel Harold Bortz, LSG Imaging, Beverly Hills, CA, USA
Aarthi Ramlaul, University of Hertfordshire, School of Health and Social Work, Hertfordshire, UK
Leonie Munro, formerly at the School of Radiography, Durban, Shouth Africa
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