Flow and distension in the carotid artery from magnetic resonance imaging

Peter J. Yim; J. Kevin Demarco

doi:10.1117/12.535285

30 April 2004 Flow and distension in the carotid artery from magnetic resonance imaging

Peter J. Yim, J. Kevin Demarco

Proceedings Volume 5369, Medical Imaging 2004: Physiology, Function, and Structure from Medical Images; (2004) https://doi.org/10.1117/12.535285
Event: Medical Imaging 2004, 2004, San Diego, California, United States

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 (D_CA) and blood-flow (Q_CA) waveform from phase-contrast (PC) magnetic resonance (MR) imaging is presented. Measurement of D_CA 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 Q_CA is obtained by integration of the image intensity in the phase-component of the PC MR within the circular region detected by the mHT.

Citation Download Citation

Peter J. Yim and J. Kevin Demarco "Flow and distension in the carotid artery from magnetic resonance imaging", Proc. SPIE 5369, Medical Imaging 2004: Physiology, Function, and Structure from Medical Images, (30 April 2004); https://doi.org/10.1117/12.535285

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