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Scatterer size estimation using the center frequency assessed from ultrasound time domain data
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- Erlöv, Tobias (author)
- Lund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH
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- Jansson, Tomas (author)
- Lund University,Lunds universitet,Medicinskt ultraljud,Forskargrupper vid Lunds universitet,Medical ultrasound,Lund University Research Groups,Skåne University Hospital
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- Persson, Hans W. (author)
- Lund University,Lunds universitet,Avdelningen för Biomedicinsk teknik,Institutionen för biomedicinsk teknik,Institutioner vid LTH,Lunds Tekniska Högskola,Department of Biomedical Engineering,Departments at LTH,Faculty of Engineering, LTH
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- Acoustical Society of America (ASA), 2016
- 2016
- English 6 s.
- In: Journal of the Acoustical Society of America. - : Acoustical Society of America (ASA). - 0001-4966. ; 140:4, s. 2352-2357
- Journal article (peer-reviewed)
Abstract
Subject headings
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- Scatterer size estimation is useful when characterizing tissue using ultrasound. In all previous studies on scatterer size, the estimations are performed in the frequency domain and are thus subjected to a trade off in time-frequency resolution. This study focused on the feasibility of estimating scatterer size in the time domain using only the ultrasound center frequency, assuming a Gaussian-shaped pulse. A model for frequency normalization was derived and the frequency-dependent attenuation was compensated. Five phantoms with well-defined sizes of spherical glass beads were made and scanned with two different linear array transducers with variable center frequencies. A strong correlation (r = 0.99, p < 10-19) between the backscattered center frequency and the product between the wave number and scatterer radius was demonstrated. On average the scatterer diameter was underestimated by 6% ± 24%. These results suggest that estimation of scatterer size is possible using only the center frequency assessed in the time domain.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Medicinteknik -- Medicinsk bildbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Medical Engineering -- Medical Image Processing (hsv//eng)
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- ref (subject category)
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- Jansson, Tomas
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- Cinthio, Magnus
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