کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1759374 | 1019277 | 2006 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Study on the multiple scattering effects of ultrasound contrast agents
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
In this paper, the multiple scattering of interacting encapsulated microbubbles in suspensions is calculated using two novel approaches - Kargl's effective medium approach and Ye and Ding's approach of 2nd-order correction. Two types of contrast agents with bubbles of different sizes and concentrations are chosen for our numerical simulations. One is Albunex®, which is depicted by Church and has a size range of several microns, and the other is sodium laureate solution (before fractionation) described by Soetanto and Chan and has an average size of 35.5 μm. The numerical results from these two approaches are compared with that from the linear approximation. It is found that the multiple scattering effects on attenuation and dispersion of sound in suspensions are evident in the cases of high bubble volume fractions, basically greater than the order of 1 Ã 10â4, and much more obvious for larger bubbles with average size of tens of microns.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 44, Supplement, 22 December 2006, Pages e115-e118
Journal: Ultrasonics - Volume 44, Supplement, 22 December 2006, Pages e115-e118
نویسندگان
Jiusheng Chen, Zhemin Zhu,