کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5020400 | 1469071 | 2017 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Assessment of trabecular bone tissue elasticity with resonant ultrasound spectroscopy
ترجمه فارسی عنوان
ارزیابی کشش بافتی بافت تراککال با طیف سنجی فراصوتی
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کلمات کلیدی
استخوان اسفنجی، کشش بافتی، عناصر میکرو محدود لرزش، محیط متخلخل
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی پزشکی
چکیده انگلیسی
The material properties of the trabeculae (tissue-level properties), together with the trabecular architecture and the bone volume fraction determine the apparent millimetre-scale bone mechanical properties. We present a novel method to measure trabecular tissue elastic modulus Et using resonant ultrasound spectroscopy (RUS). The first mechanical resonance frequency fe of a freestanding cuboid specimen is measured and used to back-calculate Et. The steps of the back-calculation are (1) the apparent stiffness tensors C(EtË) is computed using micro-finite elements for a set of trial values of tissue Young's modulus EtË based on the computed tomography image of the specimen; (2) the modeled free-vibration resonance frequencies fm(EtË) of the specimen is calculated with the Rayleigh-Ritz method using C(EtË); (3) finally, Et is obtained by interpolation using fe and fm(EtË). Four bovine bone specimens were tested (nominal size 5Ã6 Ã6Â mm3). Average (standard deviation) of Et was 13.12 (1.06)Â GPa. The measurement of a single resonance frequency enabled an estimation of tissue elasticity in line with available data. RUS is a non destructive technique relatively easy to implement compared to traditional mechanical testing. The novel method could contribute to a better documentation of bone tissue elasticity which is an important parameter of micro-finite element analyses for the clinical assessment of bone strength.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 74, October 2017, Pages 106-110
Journal: Journal of the Mechanical Behavior of Biomedical Materials - Volume 74, October 2017, Pages 106-110
نویسندگان
H. Daoui, X. Cai, F. Boubenider, P. Laugier, Q. Grimal,