کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10691791 1019610 2014 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photo-acoustic Excitation and Optical Detection of Fundamental Flexural Guided Wave in Coated Bone Phantoms
ترجمه فارسی عنوان
تشخیص عکس و آکوستیک و تشخیص نوری موج هدایت انعطاف پذیر پایه در فانتوم های استخوانی پوشش داده شده
کلمات کلیدی
استخوان کورتیک، پوکی استخوان، سونوگرافی کم انتقال محوری امواج راهنمایی، عکس آکوستیک،
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
چکیده انگلیسی
Photo-acoustic (PA) imaging was combined with skeletal quantitative ultrasound (QUS) for assessment of human long bones. This approach permitted low-frequency excitation and detection of ultrasound so as to efficiently receive the thickness-sensitive fundamental flexural guided wave (FFGW) through a coating of soft tissue. The method was tested on seven axisymmetric bone phantoms, whose 1- to 5-mm wall thickness and 16-mm diameter mimicked those of the human radius. Phantoms were made of a composite material and coated with a 2.5- to 7.5-mm layer of soft material that mimicked soft tissue. Ultrasound was excited with a pulsed Nd:YAG laser at 1064-nm wavelength and received on the same side of the coated phantom with a heterodyne interferometer. The FFGW was detected at 30-kHz frequency. Fitting the FFGW phase velocity by the FLC(1,1) tube mode provided an accurate (9.5 ± 4.0%) wall thickness estimate. Ultrasonic in vivo characterization of cortical bone thickness may thus become possible.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasound in Medicine & Biology - Volume 40, Issue 3, March 2014, Pages 521-531
نویسندگان
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