A novel non-invasive method for estimating the local wave speed at a single site in the internal carotid artery

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Asma Ayadi ◽  
Wassila Sahtout ◽  
Olivier Baledent
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Wave Speed ◽  
Internal Carotid ◽  
Blood Velocity ◽  
Non Invasive ◽  
Velocity Waveform ◽  
Local Wave ◽  
Invasive Method

AbstractObjectivesLocal wave speed is a biomarker which provides an objective analysis of the cardiovascular function. The aim of this study was to determine the local wave speed in the internal carotid artery by a new non-invasive method that measures blood velocity waveform at only one site.MethodsFor this purpose, the cepstral analysis was employed to determine the arrival time of the reflection wave and the wave speed in the carotid artery. To validate our model, we applied it experimentally in vivo on young and old healthy subjects. The blood velocity waveform was measured by using phase-contrast magnetic resonance for 22 subjects.ResultsOur experimental results correlated with reference values reported in previous studies conducted on the internal arterial carotid usually adopting the invasive method. They also correlated with those obtained by using the foot-to-foot method (R2=0.72). The wave speed obtained by the method developed in this study and that of the foot-to-foot method increased with age (p<0.001).ConclusionsThe method developed in this study can be applied in the other arteries and it can also be used with other techniques such as ultrasound imaging.

scholarly journals Location of the internal carotid artery and ophthalmic artery segments for non-invasive intracranial pressure measurement by multi-depth TCD

2017 ◽  
Vol 12 (1) ◽  
pp. 1384290 ◽  
Author(s):  
Yasin Hamarat ◽  
Mantas Deimantavicius ◽  
Evaldas Kalvaitis ◽  
Lina Siaudvytyte ◽  
Ingrida Januleviciene ◽  
...  
Keyword(s):  
Intracranial Pressure ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Pressure Measurement ◽  
Ophthalmic Artery ◽  
Internal Carotid ◽  
Non Invasive

A New Noninvasive Method for Determining the Local (True) Wave Speed: Application to Internal Carotid Artery

2018 ◽  
Vol 13 (02) ◽  
pp. 61-73
Author(s):  
Asma Ayadi ◽  
Wassila Sahtout ◽  
Olivier Baledent
Keyword(s):  
Carotid Artery ◽  
Wave Speed ◽  
Internal Carotid ◽  
Test Analysis ◽  
Cepstral Analysis ◽  
Wall Stiffness ◽  
Significant Difference ◽  
Contrast Magnetic Resonance ◽  
Local Wave ◽  
Young Subjects

Local wave speed plays an interesting role in investigating cardiovascular diseases and arterial wall stiffness. The aim of this study was to implement a novel method based on cepstral analysis for noninvasive determination of local wave speed in the carotid artery. To show the precision of the proposed method, we specially focused on the effect of age. In addition, we intended to compare the obtained results to those obtained by the foot-to-foot method. Our method consists in measuring the instantaneous blood velocity in the internal carotid by using phase-contrast magnetic resonance imaging in 20 healthy subjects distributed as follows: 10 young subjects aged between 22 and 41 years, and 10 old subjects aged between 50 and 86 years. The cepstral analysis was used to determine the arrival time of the reflection wave and the wave speed in the carotid artery. A statistical test analysis was conducted in order to establish the relation between the wave speed and the age in the sample under investigation. Our main finding was that there was a high significant difference between the two groups forming the studied sample ([Formula: see text]). In terms of the internal carotid arterial branch, our experimental results were in total agreement with reference values by the invasive method reported in the literature. Moreover, the wave speed detected using our method correlated with that detected using foot-to-foot analysis ([Formula: see text], [Formula: see text]). We can conclude that the new technique described in this paper offers a promising, convenient and efficient method to measure wave speed noninvasively.

Non-invasive visualization of arterial stagnation in a dissected internal carotid artery

2020 ◽  
Vol 412 ◽  
pp. 116760
Author(s):  
Tatsuo Mano ◽  
Takahiro Nakayama ◽  
Hironobu Endo ◽  
Keiko Bono ◽  
Ichiro Imafuku
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Internal Carotid ◽  
Non Invasive

Giant aneurysm of the petrous internal carotid artery: diagnosis and treatment

1998 ◽  
Vol 112 (2) ◽  
pp. 196-198 ◽  
Author(s):  
S. C. Coley ◽  
A. Clifton ◽  
J. Britton
Keyword(s):  
Hearing Loss ◽  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Internal Carotid ◽  
Imaging Techniques ◽  
Giant Aneurysm ◽  
Balloon Occlusion ◽  
Fusiform Aneurysm ◽  
Non Invasive ◽  
Endovascular Balloon Occlusion

AbstractWe report the case of a giant fusiform aneurysm of the petrous internal carotid artery in a 15-year-old patient who had presented with headache, hearing loss and Horner's syndrome. Definitive radiological diagnosis was made by non-invasive imaging techniques, including magnetic resonance angiography (MRA). The aneurysm was obliterated by endovascular balloon occlusion following successful tolerance of test occlusion of the internal carotid artery.

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