Ultrasonic backscatter coefficients for weakly scattering, agar spheres in agar phantoms

Michael R. King, Janelle J. Anderson, Maria Teresa Herd, Darryl Ma, Alexander Haak, Lauren A. Wirtzfeld, Ernest L. Madsen, James A. Zagzebski, Michael L. Oelze, Timothy J. Hall, William D. O'Brien

Research output: Contribution to journalArticlepeer-review


Applicability of ultrasound phantoms to biological tissue has been limited because most phantoms have generally used strong scatterers. The objective was to develop very weakly scattering phantoms, whose acoustic scattering properties are likely closer to those of tissues and then compare theoretical simulations and experimental backscatter coefficient (BSC) results. The phantoms consisted of agar spheres of various diameters (nominally between 90 and 212 μm), containing ultrafiltered milk, suspended in an agar background. BSC estimates were performed at two institutions over the frequency range 1-13 MHz, and compared to three models. Excellent agreement was shown between the two laboratory results as well as with the three models.

Original languageEnglish (US)
Pages (from-to)903-908
Number of pages6
JournalJournal of the Acoustical Society of America
Issue number2
StatePublished - Aug 2010

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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