کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1759720 | 1019293 | 2009 | 14 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrasound frame rate requirements for cardiac elastography: Experimental and in vivo results
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ultrasound frame rate requirements for cardiac elastography: Experimental and in vivo results Ultrasound frame rate requirements for cardiac elastography: Experimental and in vivo results](/preview/png/1759720.png)
چکیده انگلیسی
The maximum signal-to-noise ratio obtained in a uniformly elastic phantom is 20Â dB for both a 1.26Â Hz and a 2Â Hz compression frequency when the radiofrequency echo acquisition is at least 12Â Hz and 20Â Hz respectively. However, for compression frequencies of 2.8Â Hz and 4Â Hz the maximum signal-to-noise ratio obtained is around 16Â dB even for a 40Â Hz frame rate. Our results indicate that unbiased estimation of displacements and strain require ultrasound frame rates greater than ten times the compression frequency, although a frame rate of about two times the compression frequency is sufficient to estimate the compression frequency imparted to the tissue-mimicking phantom. In vivo results derived from short-axis views of the heart acquired from normal human volunteers also demonstrate this frame rate requirement for elastography.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics - Volume 49, Issue 1, January 2009, Pages 98-111
Journal: Ultrasonics - Volume 49, Issue 1, January 2009, Pages 98-111
نویسندگان
Hao Chen, Tomy Varghese, Peter S. Rahko, J.A. Zagzebski,