![]() However, in order to minimize errors due to physiological variation and the overall duration of theĮxamination, it would be desirable to perform bothĭistension and pulse pressure measurements consecutively, within the same magnetic resonance imaging Well-validated transfer functions areĬommonly used in conjunction with applanation tonometry to obtain central pulse pressure estimates Used in place of the local systolic-diastolic pressureĬhange, it has been demonstrated that this introducesĪn age-dependent systematic error caused by theĪge-dependent phenomenon of pulse pressure amplification (1). Although brachial pulse pressure is often The need to evaluate local pulse pressure, which canīe measured reliably only by means of invasive techniques. IN VIVO MEASUREMENTS of arterial compliance andĭistensibility coefficients are generally hampered by Pressure measurements (IVPM) obtained in patients (n ¼Ĥ) undergoing diagnostic cardiac angiography and thenįound to be either normal or with clinically insignificant Performed in healthy subjects (n ¼ 18) and intravascular Magnetic resonance (MR)-derived pressures were compared against applanation tonometry (AT) Of a simplified hemodynamic model, based on a crosssectionally averaged form of the mass conservation equation, allowed estimation of the average pressure waveformĪnd PP along 6-cm-long segments located within the descending aorta. (FVE) was used to obtain time-dependent velocity distributions along the descending aorta. Localized pulse sequence with Fourier velocity encoding Materials and Methods: A one-dimensional, cylindrically Purpose: To use a simplified hemodynamic model andįourier-encoded velocity data to measure pulse pressure ![]() Key Words: Fourier velocity encoding cylindrical excitation aortic pulse pressure distensibility ![]() JOURNAL OF MAGNETIC RESONANCE IMAGING 39:85–93 (2014)Įstimation of Aortic Pulse Pressure Using Fourier ![]()
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