open access

Vol 10, No 2 (2008)
Published online: 2008-10-21
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Virtual colonoscopy - a new method for estimating the pathology of the large intestine

Tomasz Lebda-Wyborny, Anna Barczyk, Joanna Pilch-Kowalczyk
Chirurgia Polska 2008;10(2):88-100.

open access

Vol 10, No 2 (2008)
Published online: 2008-10-21

Abstract

CT virtual colonoscopy (VC) is a modern diagnostics method which enables 3D view of walls and internal space of the colon as a result of reconstruction of helical CT images. Its role in diagnosis of pathologies of the colon systematically increases, and in many medical centers of the world is carried out as a screening test in patients with high risk of colon cancer.
The key for the proper interpretation of this procedure is the patients preparation for the examination and the experience of evaluating radiologist. Common causes of the misinterpretation are technical errors linked with improper patients preparation (fecal mass and fluid attenuation). Protocol of the examination differs in screening and in diagnostic examination. Full evaluation includes the evaluation of toposcan, axial images (which are always reference images), multiplanar reconstructions and 3D options - amongst the others navigator type reconstructions. Novelty in this field, which improves the proper evaluation, is the computer aided diagnosis (CAD).
Virtual colonoscopy is safe and well tolerated in patients diagnostic method which permits early detection of pre cancer pathologies with specificity and sensitivity similar to classical colonoscopy, but also enables the possibility of evaluating extra colon lesions. This method can be an reasonable alternative for classical colonoscopy in screening and should take place of double contrast barium enema in evaluating the patient with probable colon cancer or polyps.

Abstract

CT virtual colonoscopy (VC) is a modern diagnostics method which enables 3D view of walls and internal space of the colon as a result of reconstruction of helical CT images. Its role in diagnosis of pathologies of the colon systematically increases, and in many medical centers of the world is carried out as a screening test in patients with high risk of colon cancer.
The key for the proper interpretation of this procedure is the patients preparation for the examination and the experience of evaluating radiologist. Common causes of the misinterpretation are technical errors linked with improper patients preparation (fecal mass and fluid attenuation). Protocol of the examination differs in screening and in diagnostic examination. Full evaluation includes the evaluation of toposcan, axial images (which are always reference images), multiplanar reconstructions and 3D options - amongst the others navigator type reconstructions. Novelty in this field, which improves the proper evaluation, is the computer aided diagnosis (CAD).
Virtual colonoscopy is safe and well tolerated in patients diagnostic method which permits early detection of pre cancer pathologies with specificity and sensitivity similar to classical colonoscopy, but also enables the possibility of evaluating extra colon lesions. This method can be an reasonable alternative for classical colonoscopy in screening and should take place of double contrast barium enema in evaluating the patient with probable colon cancer or polyps.
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Keywords

Tomasz Lebda-Wyborny; Anna Barczyk; Joanna Pilch-Kowalczyk

About this article
Title

Virtual colonoscopy - a new method for estimating the pathology of the large intestine

Journal

Chirurgia Polska (Polish Surgery)

Issue

Vol 10, No 2 (2008)

Pages

88-100

Published online

2008-10-21

Bibliographic record

Chirurgia Polska 2008;10(2):88-100.

Keywords

Tomasz Lebda-Wyborny
Anna Barczyk
Joanna Pilch-Kowalczyk

Authors

Tomasz Lebda-Wyborny
Anna Barczyk
Joanna Pilch-Kowalczyk

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