Review of CT colonography: Current and future techniques

R. K. Hung, J. Yee, S. D. Wall

Research output: Contribution to journalReview article


CT colonography combines spiral CT technology and advanced three- dimensional graphics software to generate endoluminal images of the colon. The combination of three-dimensional endoluminal, axial, and two-dimensional reformatted CT images has the potential to be a sensitive imaging modality for the detection of colorectal lesions. The early reported sensitivities and specificities using CT colonography for the detection of colorectal polyps are encouraging. This article reviews the screening methods currently used to detect colorectal carcinoma and the significance of early detection. The discussion then focuses on patient preparation, colonic insufflation, imaging protocols, CT parameters, postprocessing methods (surface and volume- rendering), and image interpretation during CT colonography.

Original languageEnglish (US)
Pages (from-to)239-248
Number of pages10
Issue number6
Publication statusPublished - Dec 1 1999
Externally publishedYes


ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

Cite this

Hung, R. K., Yee, J., & Wall, S. D. (1999). Review of CT colonography: Current and future techniques. Radiologist, 6(6), 239-248.