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
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم آکوستیک و فرا صوت
پیش نمایش صفحه اول مقاله
Ultrasound frame rate requirements for cardiac elastography: Experimental and in vivo results
چکیده انگلیسی
The maximum signal-to-noise ratio obtained in a uniformly elastic phantom is 20 dB for both a 1.26 Hz and a 2 Hz compression frequency when the radiofrequency echo acquisition is at least 12 Hz and 20 Hz respectively. However, for compression frequencies of 2.8 Hz and 4 Hz the maximum signal-to-noise ratio obtained is around 16 dB even for a 40 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
نویسندگان
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