Virtual Colonoscopy. A Practical Guide by Philippe Lefere, Stefàan Gryspeerdt, Albert L. Baert

By Philippe Lefere, Stefàan Gryspeerdt, Albert L. Baert

Virtual colonoscopy, or CT colonography, is a singular and speedily evolving procedure for the detection of tumoral lesions within the colon. It offers to be of significant price as a screening instrument for either colorectal melanoma and its adenomatous precursor. With contributions from a number of leaders within the box, this booklet addresses the entire very important matters when it comes to digital colonoscopy. there's a specific concentrate on functional features: the way to begin digital colonoscopy in a division, the usual training, the significance of fecal tagging, the way to decrease the practise, tips to receive optimum colonic distension, and the proper scanning parameters. Imaging features and pitfalls are thought of intimately, with an intensive pictorial overview of inauspicious lesions, and the significance of computer-aided analysis is mentioned. This booklet might be valuable to each radiologist looking info on tips on how to practice the fascinating means of digital colonoscopy.

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Additional resources for Virtual Colonoscopy. A Practical Guide

Example text

A short explanation concerning the adenoma-carcinoma sequence underscoring the importance of screening for colorectal cancer encourages the patients to follow the preparation meticulously. 2 The Examination On the day of CT colonography the patients remain sober until the examination is performed. Whenever necessary we advise the patients to take their regular medication shortly before CT colonography. CT colonography is preferably performed in the morning. Prior to the exam the patient is instructed to visit the restroom to empty the rectum.

In fact as the faecal residue is labelled in the colon, more residue can be left over in the colon without compromising the diagnostic performance of CT colonography. This offers the opportunity of reducing the cathartic cleansing part of the preparation and should enable improvement of patient compliance. This improved patient compliance was confirmed by Lefere et al. (2002). They compared the patient discomfort experienced the day before CT colonography in 2 groups of 50 patients. The former group was prepared with an intensive cathartic cleansing, while the latter was prepared with a combination of a reduced cathartic cleansing and faecal tagging.

This box contains powdered drinks with vanilla flavour, fruit drinks, soups, chips and nutrition bars. The diet reduces the fat intake and the faecal output. ). Breakfast consists of a tropical fruit juice, one vanilla drink and tea or coffee. At lunch patients drink another tropical fruit juice and vanilla drink and/or apple sauce, a soup and tea or coffee. At dinner they can have another soup and/or vanilla drink. Between the meals they can eat the chips and nutrition bars. The patients are allowed to drink as much additional water as they want to.

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