کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10432899 910262 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Using static preload with magnetic resonance elastography to estimate large strain viscoelastic properties of bovine liver
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی پزشکی
پیش نمایش صفحه اول مقاله
Using static preload with magnetic resonance elastography to estimate large strain viscoelastic properties of bovine liver
چکیده انگلیسی
Traditional magnetic resonance elastography (MRE) applies small amplitude vibration to tissues. Thus currently MRE measures only the small deformation behaviour of tissues. MRE has the potential to estimate the strain-varying shear modulus of soft tissues, if applied at different static strains, which may allow prediction of the large-strain behaviour of tissues. This study uses MRE of bovine liver specimens under various levels of static compressive pre-strain up to 30%. Storage and loss moduli measured using MRE increased non-linearly with static compressive pre-strain, and exponential models fit well to these data to describe this relationship (R2>0.93). Based on these models, a 10% linear compression of liver would result in a 47% overestimate of the 'true' storage modulus of the uncompressed tissue. The results of this study have implications for MRE transducer design and interpretation of results from in vivo MRE studies.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 44, Issue 13, 2 September 2011, Pages 2461-2465
نویسندگان
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