Related Experiment Videos
Aorta wall motion monitoring by 1-d MRI of perpendicular diameters
Y H Chia1, M L Wood, W M Leung
1Department of Medical Biophysics, University of Toronto Imaging/Bioengineering Research, Sunnybrook and Women's College Health Sciences Center, Toronto, Ontario, Canada. ychia@sten.sunnybrook.utoronto.ca
Abstract:
A method for monitoring the cross-sectional size of blood vessels rapidly is introduced. The method creates a one-dimensional (1-D) profile of a strip along the diameter of a vessel using magnetic resonance imaging (MRI). The strips can be much wider than pixels in a typical two-dimensional (2-D) image to increase the signal-to-noise ratio. A second strip perpendicular to the first is also imaged sequentially to allow the detection, estimation, and correction of errors in diameter measurements resulting from the strip inadvertently covering a chord, rather than a diameter. Diameter measurements derived from 1-D profiles agree with measurements derived from 2-D images. This method is nearly an order of magnitude faster than 2-D MRI and has the potential for real-time implementation. J. Magn. Reson. Imaging 1999;10:833-840.