کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5485534 | 1523239 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Non-Invasive Intra-cardiac Pressure Measurements Using Subharmonic-Aided Pressure Estimation: Proof of Concept in Humans
ترجمه فارسی عنوان
مقادیر فشار داخل قلب غیر عصبی با استفاده از برآورد فشار زیر فشارخون: اثبات مفهوم در انسان
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کلمات کلیدی
برآورد فشار متعارف تحت فشار، برآورد فشار غیر تهاجمی، فشار داخل قلب، عوامل کنتراست سونوگرافی، کاتتریزاسیون قلبی،
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
چکیده انگلیسی
This study evaluated the feasibility of employing non-invasive intra-cardiac pressure estimation using subharmonic signals from ultrasound contrast agents in humans. This institutional review board-approved proof-of-concept study included 15 consenting patients scheduled for left and right heart catheterization. During the catheterization procedure, Definity was infused intra-venously at 4-10Â mL/min. Ultrasound scanning was performed with a Sonix RP using pulse inversion, three incident acoustic output levels and 2.5-MHz transmit frequency. Radiofrequency data were processed and subharmonic amplitudes were compared with the pressure catheter data. The correlation coefficient between subharmonic signals and pressure catheter data ranged from â0.3 to â0.9. For acquisitions with optimum acoustic output, pressure errors between the subharmonic technique and catheter were as low as 2.6Â mmHg. However, automatically determining optimum acoustic output during scanning for each patient remains to be addressed before clinical applicability can be decided.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 43, Issue 11, November 2017, Pages 2718-2724
Journal: Ultrasound in Medicine & Biology - Volume 43, Issue 11, November 2017, Pages 2718-2724
نویسندگان
Jaydev K. Dave, Sushmita V. Kulkarni, Purva P. Pangaonkar, Maria Stanczak, Maureen E. McDonald, Ira S. Cohen, Praveen Mehrotra, Michael P. Savage, Paul Walinsky, Nicholas J. II, David L. Fischman, David Ogilby, Carolyn VanWhy, Matthew Lombardi,