Cycle

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Related to cardiac cycle: cardiac output, blood pressure, Heart sounds

Cycle

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The form of collagen organization defines the distribution and magnitude of strain of the valve during the cardiac cycle (42).
The highest level is at the peak systole of the first cardiac cycle t = 0.65 s.
[bar.[V.sub.b]](t) denotes the average velocity field of blood at time t, which is the mean flow velocity at the same time in multiple cardiac cycles. T is the length of the cardiac cycle.
Sixteen frame per cardiac cycle acquisition resulted larger EDV (82.6 34.3 ml vs 80.9 42.5ml, P=NS) smaller ESV (34.7 31.4ml vs 38.9 40.1ml, P=NS but signif icant) and higher LVEF (63 14.1ml vs 59.1 15ml, P0.05 (NS).
To analyze systole and diastole the cardiac cycle is usually divided into seven phases.
The performance of the algorithms varies with the phase of the cardiac cycle. In most segmentation algorithms, performance decreases in systole, and our algorithms are not an exception.
Whereas 2D and 4D flow MRI measure blood velocity and provide information on only one single cardiac cycle by repeated acquisitions over several cardiac cycles, TR-MRA dynamically measures contrast media dispersion with the blood stream over a period of several cardiac cycles.
Rigidity of vessel is valid transiently with respect to one complete rateresponsive cardiac cycle. Therefore, for transient analysis, noslip boundary condition is used at wall.
In the point of view of fPCG signal, [S.sub.x]([alpha], f) must have a peak at heart rate because the heart sounds are dominant cyclic components at the heart rate in adjacent fetal cardiac cycles. Therefore, detecting FHR is equal to detecting the basic cycle frequency of the digital sequence.
He then discussed in detail cardiac cycle and ECG, coronary artery system, approach to read ECG, pattern of reading ECG so that one does not miss anything.
Mean arterial blood pressure (MBP) is the average blood pressure in a subject during the cardiac cycle. Inasmuch as this parameter represents the force to sustain organ perfusion, it should be considered a fundamental cardiovascular variable.
The velocities recorded upstream of the lesion are displayed for one cardiac cycle in Figures 2 and 3.