Rapid progress in the technique and practice of virtual colonoscopy as well as the conti- ing clinical high interest for this radiodiagnostic procedure made this second edition, only 3 years after the publication of the ? rst edition of this successful volume, necessary. This new edition includes the latest study results and technical developments of this exciting noninvasive diagnostic modality for the evaluation of the colon. The technical presentation and lay out of the text and of the many new illustrations are impeccable. The editors were again able to ensure the collaboration of many international leaders in the ? eld and the book offers a very comprehensive overview of all aspects and issues of CT colonography with a focus on how to perform practically this examination, which requires meticulous technique starting from rigorous preparation, then the conduct of the study itself, and ? nally the interpretation of the results. I am very much indebted to the editors and the collaborating authors for preparing this outstanding volume in a record short time period, which enabled them to include the latest technical advances in this rapidly evolving important radiological method. It is highly recommended to general and gastrointestinal radiologists as well as gast- eneterologists as a most welcome update of their knowledge and as a practical guide in their daily practice. I am convinced that this second edition will meet the same success with our readership as the ? rst one.

Why We Do CTC: Screening for Colorectal Cancer

The Performance of CTC
Starting CT Colonography in Your Department
The Eligible Patient: Indications and Contraindications
Patient Preparation for CT Colonography
The Prerequisite: Faecal Tagging
How to Get the Colon Distended?
Right Parameters
How to Interpret CTC Data: Evaluation of the Different Lesion Morphologies
How to Avoid Pitfalls in Imaging: Causes and Solutions to Overcome False-Negatives and False-Positives
3D Imaging: Invaluable for the Correct Diagnosis?
The Challenge: Detection of Early-Stage Superficial Colorectal Lesions
Extracolonic Findings
The Future: Computer-Aided Detection
Quality and Consistency in Reporting CT Colonography
Virtual Colonoscopy: Beyond Polyp Detection
Pictorial Overview of Normal Anatomy, Mimics of Disease, and Neoplasia Using CT Colonography.