Key result
Noninvasive estimation of the effective reflection distance using the arrival time of the reflected wave positively correlated with the return time of the foot of the wave.
Why the study?
The study was designed to estimate, in vivo, the effective reflected site of the internal carotid wall from the noninvasive determination of local arterial wave speed.
Does the estimation of effective reflection distance using the arrival time of the reflected wave correlate with the return time of the foot of the wave in the internal carotid artery of healthy subjects?
Observational (n=20)
Does the estimation of effective reflection distance using the arrival time of the reflected wave correlate with the return time of the foot of the wave in the internal carotid artery of healthy subjects?
The proposed technique offers a noninvasive and efficient method to estimate the effective reflection site in the internal carotid artery.
Purpose: The objective of this study is to estimate, in vivo, the effective reflected site of the internal carotid wall (ICA) from the noninvasive determination of the local arterial wave speed (c). Materials: c was calculated in our previous work that uses the measurement of the instantaneous blood velocity at two sites by contrast magnetic resonance, the study having been conducted on 20 healthy subjects. The determination of the effective reflection distance (ERD) requires the measurement of the arrival time of the reflected wave. We have found that the major reflection site in the internal carotid artery was located in the proximity of the measurement site to the circle of Willis. To validate the method proposed in this work, we compared it to the results obtained by using the return time of the foot of the wave. The foot of the wave was determined from the tangent of the abrupt rise of the velocity signal wavefront. Results: A positive correlation between ERD obtained by using the arrival time of the reflected wave and those obtained by the return time of infection point ([Formula: see text]) was obtained. Conclusion: The technique described in this study offers a promising convenient and efficient method to estimate the effective reflection site noninvasively.
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Ayadi et al. (2023) conducted an observational in Healthy (n=20). Arrival time of the reflected wave for ERD estimation vs. Return time of the foot of the wave was evaluated on Correlation between ERD methods. Noninvasive estimation of the effective reflection distance using the arrival time of the reflected wave positively correlated with the return time of the foot of the wave.
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