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Defective fibrillin in Marfan patients results in increased aortic stiffness. Little is known about the regional distribution or progression of this alteration. Arterial pulse wave velocity (PWV) is a sensitive index of vascular stiffness. However, current noninvasive methods such as arterial tonometry (AT) cannot detect regional variations in PWV or directly measure true vascular path length....
Reliable and efficient vessel cross-sectional boundary extraction is very important for many medical magnetic resonance (MR) image studies. General purpose edge detection algorithms often fail for medical MR images processing due to fuzzy boundaries, inconsistent image contrast, missing edge features, and the complicated background of MR images. In this regard, we present a vessel cross-sectional...
Accurate determination of the offset and onset of QRS complexes in a high-resolution electrocardiogram (ECG) is required for time-domain detection of late potentials. Late potentials are usually detected by applying a threshold algorithm to a signal-averaged and filtered QRS complex. Adaptive filtering algorithms have made it possible to attempt beat-to-beat analysis of late potentials but the standard...
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