Scatterer size estimation using the center frequency assessed from ultrasound time domain data

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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.


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Externa organisationer
  • Skåne University Hospital

Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Medicinsk bildbehandling
Sidor (från-till)2352-2357
Antal sidor6
TidskriftJournal of the Acoustical Society of America
StatusPublished - 2016 okt 1
Peer review utfördJa