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Assessing the blood pressure waveform of the carotid artery using an ultrasound image processing method
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논문 기본 정보

Type
Academic journal
Author
Effat Soleimani (Tarbiat Modares University) Manijhe Mokhtari-Dizaji (Tarbiat Modares University) Nasser Fatouraee (Amirkabir University of Technology) Hazhir Saberi (Imaging Center of Imam Khomaini Hospital)
Journal
대한초음파의학회 ULTRASONOGRAPHY ULTRASONOGRAPHY Vol.36 No.2 KCI Accredited Journals
Published
2017.1
Pages
144 - 152 (9page)

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Assessing the blood pressure waveform of the carotid artery using an ultrasound image processing method
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Abstract· Keywords

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Purpose: The aim of this study was to introduce and implement a noninvasive method to derive the carotid artery pressure waveform directly by processing diagnostic sonograms of the carotid artery. Methods: Ultrasound image sequences of 20 healthy male subjects (age, 36±9 years) were recorded during three cardiac cycles. The internal diameter and blood velocity waveforms were extracted from consecutive sonograms over the cardiac cycles by using custom analysis programs written in MATLAB. Finally, the application of a mathematical equation resulted in time changes of the arterial pressure. The resulting pressures were calibrated using the mean and the diastolic pressure of the radial artery. Results: A good correlation was found between the mean carotid blood pressure obtained from the ultrasound image processing and the mean radial blood pressure obtained using a standard digital sphygmomanometer (R=0.91). The mean absolute difference between the carotid calibrated pulse pressures and those measured clinically was -1.333±6.548 mm Hg. Conclusion: The results of this study suggest that consecutive sonograms of the carotid artery can be used for estimating a blood pressure waveform. We believe that our results promote a noninvasive technique for clinical applications that overcomes the reproducibility problems of common carotid artery tonometry with technical and anatomical causes.

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References (40)

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Waddell TK / 2001 / Carotid pressure is a better predictor of coronary artery disease severity than brachial pressure / Hypertension 38:927~931 google schola McEniery CM / 2014 / Central blood pressure: current evidence and clinical importance / Eur Heart J 35:1719~1725 google schola Cheng HM / 2013 / Measurement accuracy of non-invasively obtained central blood pressure by applanation tonometry: a systematic review and meta-analysis / Int J Cardiol 167:1867~1876 google schola Nelson MR / 2010 / Noninvasive measurement of central vascular pressures with arterial tonometry: clinical revival of the pulse pressure waveform? / Mayo Clin Proc 85:460~472 google schola Fetics B / 1999 / Parametric model derivation of transfer function for noninvasive estimation of aortic pressure by radial tonometry / IEEE Trans Biomed Eng 46:698~706 google schola

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