کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5486021 1399445 2017 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Ambient Pressure Evaluation Through Sub-Harmonic Response of Chirp-Sonicated Microbubbles
ترجمه فارسی عنوان
ارزیابی فشار محیط با استفاده از واکنش زیر هارمونیک از میکرو حباب های خرد شده
کلمات کلیدی
سیگنال خلط پاسخ متقارن هارمونیک، میکروبابابل، اندازه گیری فشار خون محیطی،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
چکیده انگلیسی
The sub-harmonic response generated by oscillating ultrasound contrast microbubbles has been proven to be a potentially efficient and effective measure for non-invasive blood pressure evaluation. In this work, an improved approach to ambient pressure measurement is proposed, and the general principle underlying this approach is the combination of sub-harmonic responses of microbubbles with a chirp excitation technique. Agreement between theoretical and experimental studies indicates that compared with sinusoidal excitation, the chirp technique is beneficial in that it produces bubble sub-harmonics with higher amplitudes and lower generation thresholds and thus offers better sensitivity for ambient pressure evaluations. Studies that took the chirp parameters (e.g., central frequency, bandwidth and pulse length) into account were also carried out to determine an optimized routine for the proposed method.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 43, Issue 1, January 2017, Pages 332-340
نویسندگان
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