A New High-Resolution Spectral Approach to Noninvasively Evaluate Wall Deformations in Arteries
المؤلفون المشاركون
Brum, Javier
Negreira, Carlos
Ramos, Antonio
Bazan, Ivonne
Ramirez, Alfredo
المصدر
Computational and Mathematical Methods in Medicine
العدد
المجلد 2014، العدد 2014 (31 ديسمبر/كانون الأول 2014)، ص ص. 1-15، 15ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2014-02-13
دولة النشر
مصر
عدد الصفحات
15
التخصصات الرئيسية
الملخص EN
By locally measuring changes on arterial wall thickness as a function of pressure, the related Young modulus can be evaluated.
This physical magnitude has shown to be an important predictive factor for cardiovascular diseases.
For evaluating those changes, imaging segmentation or time correlations of ultrasonic echoes, coming from wall interfaces, are usually employed.
In this paper, an alternative low-cost technique is proposed to locally evaluate variations on arterial walls, which are dynamically measured with an improved high-resolution calculation of power spectral densities in echo-traces of the wall interfaces, by using a parametric autoregressive processing.
Certain wall deformations are finely detected by evaluating the echoes overtones peaks with power spectral estimations that implement Burg and Yule Walker algorithms.
Results of this spectral approach are compared with a classical cross-correlation operator, in a tube phantom and “in vitro” carotid tissue.
A circulating loop, mimicking heart periods and blood pressure changes, is employed to dynamically inspect each sample with a broadband ultrasonic probe, acquiring multiple A-Scans which are windowed to isolate echo-traces packets coming from distinct walls.
Then the new technique and cross-correlation operator are applied to evaluate changing parietal deformations from the detection of displacements registered on the wall faces under periodic regime.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Bazan, Ivonne& Negreira, Carlos& Ramos, Antonio& Brum, Javier& Ramirez, Alfredo. 2014. A New High-Resolution Spectral Approach to Noninvasively Evaluate Wall Deformations in Arteries. Computational and Mathematical Methods in Medicine،Vol. 2014, no. 2014, pp.1-15.
https://search.emarefa.net/detail/BIM-484547
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Bazan, Ivonne…[et al.]. A New High-Resolution Spectral Approach to Noninvasively Evaluate Wall Deformations in Arteries. Computational and Mathematical Methods in Medicine No. 2014 (2014), pp.1-15.
https://search.emarefa.net/detail/BIM-484547
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Bazan, Ivonne& Negreira, Carlos& Ramos, Antonio& Brum, Javier& Ramirez, Alfredo. A New High-Resolution Spectral Approach to Noninvasively Evaluate Wall Deformations in Arteries. Computational and Mathematical Methods in Medicine. 2014. Vol. 2014, no. 2014, pp.1-15.
https://search.emarefa.net/detail/BIM-484547
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-484547
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
أضخم قاعدة بيانات عربية للاستشهادات المرجعية للمجلات العلمية المحكمة الصادرة في العالم العربي
تقوم هذه الخدمة بالتحقق من التشابه أو الانتحال في الأبحاث والمقالات العلمية والأطروحات الجامعية والكتب والأبحاث باللغة العربية، وتحديد درجة التشابه أو أصالة الأعمال البحثية وحماية ملكيتها الفكرية. تعرف اكثر