کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1762120 | 1019679 | 2006 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Assessment of myocardial regional strain and strain rate by tissue tracking in B-mode echocardiograms
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Assessment of myocardial regional strain and strain rate by tissue tracking in B-mode echocardiograms Assessment of myocardial regional strain and strain rate by tissue tracking in B-mode echocardiograms](/preview/png/1762120.png)
چکیده انگلیسی
To date, established ultrasonic methods for myocardial regional deformation recovery are based on the Doppler effect, which has inherent limitations restricting its accuracy and use. The reported time domain methods show in vivo insufficient accuracy. A novel approach is elaborated mimicking the human observer who reaches robust diagnosis upon the B-mode data. In a region-of-interest (ROI), acoustic markers stable for tracking are selected. A weighting index presenting the quality of tracking of each marker is used for spatial polynomial fitting. For the feasibility study, a simple straight ROI was selected, which matches the septum. A thorough proof of concept is provided by comparing with a gold standard method and by applying the method to clinical datasets. The peak systolic longitudinal strains of 12 normals were -15% + -2.3% and, of 12 patients with a light-to-mild dysfunction of the apical-septal segment, they were -9% + -0.8% (p < 0.05). Enhancements of the method using spline fitting are introduced. (E-mail: dan@biomed.technion.ac.il)
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 32, Issue 8, August 2006, Pages 1181-1192
Journal: Ultrasound in Medicine & Biology - Volume 32, Issue 8, August 2006, Pages 1181-1192
نویسندگان
Dan Rappaport, Dan Adam, Peter Lysyansky, Shimon Riesner,