کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8131411 1523236 2018 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development and Validation of a Phase-Filtered Moving Ensemble Correlation for Echocardiographic Particle Image Velocimetry
ترجمه فارسی عنوان
توسعه و اعتبار یک همبستگی حرکتی فازی فیلتر شده برای اندازه گیری تصاویر ذره ای اکوکاردیوگرام
کلمات کلیدی
اکوکاردیوگرافی، سرعت سنجی تصاویر ذرات، اختلال عملکرد دیاستولیک،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
چکیده انگلیسی
A new processing method for echocardiographic particle image velocimetry (EchoPIV) using moving ensemble (ME) correlation with dynamic phase correlation filtering was developed to improve velocity measurement accuracy for routine clinical evaluation of cardiac function. The proposed method was tested using computationally generated echocardiogram images. Error analysis indicated that ME EchoPIV yields a twofold improvement in bias and random error over the current standard correlation method (βPairwise = −0.15 vs. βME = −0.06; σPairwise = 1.00 vs. σME = 0.49). Subsequently a cohort of eight patients with impaired diastolic filling underwent similar evaluation. Comparison of patient EchoPIV velocity time series with corresponding color M-mode velocity time series revealed better agreement for ME EchoPIV compared with standard PIV processing (RME = 0.90 vs. RPairwise = 0.70). Further time series analysis was performed to measure filling propagation velocity and 1-D intraventricular pressure gradients. Comparison against CMM values indicated that both measurements are completely decorrelated for pairwise processing (R2Vp = 0.15, R2IVPD = 0.07), whereas ME processing correlates decently (R2Vp = 0.69, R2IVPD = 0.69). This new approach enables more robust processing of routine clinical scans and can increase the utility of EchoPIV for the assessment of left ventricular function.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 44, Issue 2, February 2018, Pages 477-488
نویسندگان
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