Interlaboratory comparison of ultrasonic backscatter, attenuation, and speed measurements

Ernest L. Madsen, Fang Dong, Gray R. Frank, Brian S. Garra, Keith A. Wear, Thaddeus Wilson, James A. Zagzebski, Heather L. Miller, K. Kirk Shung, S. H. Wang, Ernest J. Feleppa, Tian Liu, William D. O'Brien, Karen A. Topp, Narendra T. Sanghvi, A. V. Zaitsev, Timothy J. Hall, J. Brian Fowlkes, Oliver D. Kripfgans, James G. Miller

Research output: Contribution to journalArticlepeer-review


In a study involving 10 different sites, independent results of measurements of ultrasonic properties on equivalent tissue-mimicking samples are reported and compared. The properties measured were propagation speed, attenuation coefficients, and backscatter coefficients. Reasonably good agreement exists for attenuation coefficients, but less satisfactory results were found for propagation speeds. As anticipated, agreement was not impressive in the case of backscatter coefficients. Results for four sites agreed rather well in both absolute values and frequency dependence, and results from other sites were lower by as much as an order of magnitude. The study is valuable for laboratories doing quantitative studies.

Original languageEnglish (US)
Pages (from-to)615-631
Number of pages17
JournalJournal of Ultrasound in Medicine
Issue number9
StatePublished - 1999
Externally publishedYes


  • Attenuation
  • Backscatter
  • Interlaboratory comparison
  • Measurements
  • Speed

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging


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