کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1760151 1019577 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Inflation and Bi-Axial Tensile Testing of Healthy Porcine Carotid Arteries
ترجمه فارسی عنوان
تست کشش کششی و بیسیمال عصاره سالم شربت کاروتید
کلمات کلیدی
الاستوگرافی سونوگرافی، شریان کاروتید، تست تورم، تست کششی دو طرفه،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
چکیده انگلیسی
Knowledge of the intrinsic material properties of healthy and diseased arterial tissue components is of great importance in diagnostics. This study describes an in vitro comparison of 13 porcine carotid arteries using inflation testing combined with functional ultrasound and bi-axial tensile testing. The measured tissue behavior was described using both a linear, but geometrically non-linear, one-parameter (neo-Hookean) model and a two-parameter non-linear (Demiray) model. The shear modulus estimated using the linear model resulted in good agreement between the ultrasound and tensile testing methods, GUS = 25 ± 5.7 kPa and GTT = 23 ± 5.4 kPa. No significant correspondence was observed for the non-linear model aUS = 1.0 ± 2.7 kPa vs. aTT = 17 ± 8.8 kPa, p ∼ 0); however, the exponential parameters were in correspondence (bUS = 12 ± 4.2 vs. bTT = 10 ± 1.7, p > 0.05). Estimation of more complex models in vivo is cumbersome considering the sensitivity of the model parameters to small changes in measurement data and the absence of intraluminal pressure data, endorsing the use of a simple, linear model in vivo.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 42, Issue 2, February 2016, Pages 574-585
نویسندگان
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