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Proceedings Paper

Flow and distension in the carotid artery from magnetic resonance imaging
Author(s): Peter J. Yim; J. Kevin Demarco
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Paper Abstract

Hemodynamic conditions in the carotid artery may be associated with progression of carotid artery (CA) disease and with the risk of stroke. A methodology for objective measurement of distension (DCA) and blood-flow (QCA) waveform from phase-contrast (PC) magnetic resonance (MR) imaging is presented. Measurement of DCA is obtained using a modified Hough Transform (mHT) applied to the magnitude-component of the PC MR. The mHT is based on the optimization of an objective function which is the sum of the gradient magnitude of the image sampled at 10° increments around the circle using bilinear interpolation. The mHT detects the boundary of the vessel in the cross-sectional image at 0.05-pixel resolution. Measurement of QCA is obtained by integration of the image intensity in the phase-component of the PC MR within the circular region detected by the mHT.

Paper Details

Date Published: 30 April 2004
PDF: 5 pages
Proc. SPIE 5369, Medical Imaging 2004: Physiology, Function, and Structure from Medical Images, (30 April 2004); doi: 10.1117/12.535285
Show Author Affiliations
Peter J. Yim, Robert Wood Johnson Medical School (United States)
J. Kevin Demarco, Robert Wood Johnson Medical School (United States)

Published in SPIE Proceedings Vol. 5369:
Medical Imaging 2004: Physiology, Function, and Structure from Medical Images
Amir A. Amini; Armando Manduca, Editor(s)

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