کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10432758 | 910258 | 2013 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrasonic characterization of the nonlinear properties of canine livers by measuring shear wave speed and axial strain with increasing portal venous pressure
ترجمه فارسی عنوان
ویژگی التراسونیک خواص غیرخطی کبد سگ با اندازه گیری سرعت موج برشی و سویه محوری با افزایش فشار ورید پورتال
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی پزشکی
چکیده انگلیسی
Elevated hepatic venous pressure is the primary source of complications in advancing liver disease. Ultrasound imaging is ideal for potential noninvasive hepatic pressure measurements as it is widely used for liver imaging. Specifically, ultrasound based stiffness measures may be useful for clinically monitoring pressure, but the mechanism by which liver stiffness increases with hepatic pressure has not been well characterized. This study is designed to elucidate the nonlinear properties of the liver during pressurization by measuring both hepatic shear wave speed (SWS) and strain with increasing pressure. Tissue deformation during hepatic pressurization was tracked in 8 canine livers using successively acquired 3-D B-mode volumes and compared with concurrently measured SWS. When portal venous pressure was increased from clinically normal (0-5Â mmHg) to pressures representing highly diseased states at 20Â mmHg, the liver was observed to expand with axial strain measures up to 10%. At the same time, SWS estimates were observed to increase from 1.5-2Â m/s at 0-5Â mmHg (baseline) to 3.25-3.5Â m/s at 20Â mmHg.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 46, Issue 11, 26 July 2013, Pages 1875-1881
Journal: Journal of Biomechanics - Volume 46, Issue 11, 26 July 2013, Pages 1875-1881
نویسندگان
Veronica Rotemberg, Brett Byram, Mark Palmeri, Michael Wang, Kathryn Nightingale,