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Published online before print May 10, 2007, 10.1148/radiol.2441060976
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(Radiology 2007;244:281-290.)
© RSNA, 2007

Technical Developments

Multipath Curved Planar Reformation of the Peripheral Arterial Tree in CT Angiography1

Justus E. Roos, MD, Dominik Fleischmann, MD, Arnold Koechl, MD, Tejas Rakshe, MS, Matus Straka, MS, Alessandro Napoli, MD, Armin Kanitsar, PhD, Milos Sramek, PhD, and Eduard Groeller, PhD

1 From the Department of Radiology, Stanford University Medical Center, 300 Pasteur Dr, Room S-072, Stanford, CA 94305-5105 (J.E.R., D.F., T.R., A.N.); Department of Angiography and Interventional Radiology, Medical University of Vienna, Vienna General Hospital, Vienna, Austria (D.F., A. Koechl); Commission for Scientific Visualization, Austrian Academy of Sciences, Vienna, Austria (M. Straka, M. Sramek); and Institute of Computer Graphics and Algorithms, Vienna University of Technology, Vienna, Austria (A. Kanitsar, E.G.). Received June 6, 2006; revision requested August 8; revision received August 25; accepted September 27; final version accepted November 1. Supported by grants P-15217 and L291-N04 from the Austrian Science Fund. J.E.R. supported by grant PBBEB 106796 from the Swiss National Science Foundation. Ad-dress correspondence to D.F. (e-mail: d.fleischmann{at}stanford.edu).

The study was approved by the institutional review board, and informed consent was obtained. The purpose of the study was to prospectively quantify the angular visibility range, determine the existence of orthogonal viewing pairs, and characterize the conditions that cause artifacts in multipath curved planar reformations (MPCPRs) of the peripheral arterial tree in 10 patients (eight men and two women; mean age, 69 years; range, 54–80 years) with peripheral arterial occlusive disease. Percentage of segments with the maximal possible visibility score of 1 was significantly greater (odds ratio, 1.42; P < .001) for MPCPRs than for maximum intensity projections. One or more orthogonal viewing pairs were identified for all above-knee arterial segments, and artifactual vessel distortion was observed when the vessel axis approached a horizontal course in MPCPRs.

Supplemental material: http://radiology.rsnajnls.org/cgi/content/full/2441060976/DC1

© RSNA, 2007






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