Proceedings ArticleDOI
Ultrasound signal quality parameterization for image-free evaluation of arterial stiffness.
Malay Ilesh Shah,Jayaraj Joseph,Mohanasankar Sivaprakasam +2 more
- Vol. 2014, pp 2326-2329
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TLDR
A novel algorithm to parameterize the echo signal received from the common carotid artery (CCA) to improve accuracy and reliability of arterial stiffness measurement is proposed.Abstract:
We are in process of developing an image-free, single element ultrasound system for automated evaluation of arterial stiffness, we call it ARTSENS. The lack of a guiding image for arterial visualization necessitates intelligent analysis of ultrasound radio frequency (RF) echo signals to obtain reliable measurements. In this paper, we propose a novel algorithm to parameterize the echo signal received from the common carotid artery (CCA) to improve accuracy and reliability of arterial stiffness measurement. The echo signal quality is parameterized using features such as sharpness of arterial wall and energy ratio. A signal quality score is calculated by integrating the results from each feature. This score is used to triage the set of available echo signals recorded from each subject and select the best signal for computation of stiffness values. The performance of signal quality algorithm is tested using a database of carotid artery echo signals recorded from 28 human volunteers. It was observed that both the accuracy and reliability of the stiffness measurements were improved after triaging using the signal quality parameterization algorithm.read more
Citations
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Proceedings ArticleDOI
ARTSENS® Pen: A portable, image-free device for automated evaluation of vascular stiffness
TL;DR: The ARTSENS® Pen was found to be capable of providing accurate and repeatable measures of arterial stiffness in an easy manner and has strong potential in large scale vascular screening.
Journal ArticleDOI
Automated measurement of compression-decompression in arterial diameter and wall thickness by image-free ultrasound.
TL;DR: Acceptable accuracy and repeatability were observed during the validation of the novel method to measure arterial diameter, surrogate intima-media thickness (sIMT), and with them their intra-cardiac cycle changes by employing an affordable image-free ultrasound technology.
Journal ArticleDOI
Image-Free Fast Ultrasound for Measurement of Local Pulse Wave Velocity: In Vitro Validation and In Vivo Feasibility
TL;DR: In this article , the authors presented an image-free ultrasound system to measure local pulse wave velocity (PWV) in real-time by employing a pair of ultrasound transducer elements.
Journal ArticleDOI
Comparison of measurement of the augmentation index from ARTSENS and eTRACKING
Ashish Kumar Sahani,Jayaraj Joseph,Ravikumar Radhakrishnan,Mohanasankar Sivaprakasam,Suresh Seshadri +4 more
TL;DR: It is shown that it is possible to estimate the augmentation index (AIx), a measure of the global arterial mechanics, from the distension waveforms obtained by ARTSENS, a unique device that can measure the three most widely used indices of arterial Mechanics—LAS, RAS and the AIx.
Proceedings ArticleDOI
Brachial artery stiffness estimation using ARTSENS
TL;DR: The feasibility of using ARTSENS® for measuring brachial artery stiffness is demonstrated and the capability of the device to perform accurate measurements of carotid artery stiffness has been validated through extensive in-vivo studies.
References
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Journal ArticleDOI
Noninvasive Assessment of Arterial Stiffness and Risk of Atherosclerotic Events
James Oliver,David J. Webb +1 more
TL;DR: The effects of current and future cardiovascular drugs on arterial stiffness are discussed, as is the relationship between arterial elasticity and endothelial function.
Journal Article
Recent trends in coronary heart disease epidemiology in India.
TL;DR: There is an urgent need for development and implementation of suitable primordial, primary, and secondary prevention approaches for control of this epidemic of coronary heart disease in India.
Journal ArticleDOI
A Virtual Instrument for Automated Measurement of Arterial Compliance
Jayaraj Joseph,V. Jayashankar +1 more
TL;DR: A simple instrument for noninvasive in vivo evaluation of arterial compliance using a single element ultrasound transducer that can measure arterial distension with a precision better than 5 and the end-diastolic arterial diameter with an accuracy of 1%.
Journal ArticleDOI
Evaluation of the algorithm for automatic identification of the common carotid artery in ARTSENS.
TL;DR: The detailed algorithm and its extensive evaluation based on simulation and clinical studies are presented and it was demonstrated that the algorithm can be used in real-time with few trade-offs which do not affect the accuracy of CCA identification.
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