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Proceedings Paper

CT artifacts in virtual colonoscopy
Author(s): Bruce R. Whiting; Elizabeth G. McFarland; Casey Dellabarca; Barry S. Brunsden
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Paper Abstract

A phantom representation of typical colon structures with precisely known geometrical measurements was designed and fabricated. Computed tomography (CT) data were collected using a range of protocols typical for spiral CT colonography. Analysis methods were developed to measure the acquired geometry of the phantom data and characterize distortions/degradation. Simple models were proposed to explain the trends in degradation in the acquisition process versus scanner protocol. Preliminary results indicate that degradation due to CT acquisition will not significantly impact the detection of clinically relevant lesions (dimensions greater than 1 cm). However, the CT acquisition process does place a lower limit on detection size of several millimeters.

Paper Details

Date Published: 20 May 1999
PDF: 7 pages
Proc. SPIE 3660, Medical Imaging 1999: Physiology and Function from Multidimensional Images, (20 May 1999); doi: 10.1117/12.349579
Show Author Affiliations
Bruce R. Whiting, Mallinckrodt Institute of Radiology/Washington Univ. School of Medicine (United States)
Elizabeth G. McFarland, Mallinckrodt Institute of Radiology/Washington Univ. School of Medicine (United States)
Casey Dellabarca, Mallinckrodt Institute of Radiology/Washington Univ. School of Medicine (United States)
Barry S. Brunsden, Mallinckrodt Institute of Radiology/Washington Univ. School of Medicine (United States)


Published in SPIE Proceedings Vol. 3660:
Medical Imaging 1999: Physiology and Function from Multidimensional Images
Chin-Tu Chen; Anne V. Clough, Editor(s)

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