Interlaboratory comparison of ultrasonic backscatter, attenuation, and speed measurements
| Autor: | Keith A. Wear, Gary R. Frank, N. T. Sanghvi, Shyh-Hau Wang, Timothy J. Hall, Ernest L. Madsen, James G. Miller, K. Kirk Shung, Thaddeus Wilson, Oliver D. Kripfgans, B. S. Garra, James A. Zagzebski, J. B. Fowlkes, Karen A. Topp, William D. O'Brien, Tian Liu, A. V. Zaitsev, H. L. Miller, Ernest J. Feleppa, Fang Dong |
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| Rok vydání: | 1999 |
| Předmět: |
Backscatter
Acrylic Resins Mineralogy 1-Propanol Test object Ultrasonic backscatter Humans Medicine Ultrasonics Radiology Nuclear Medicine and imaging Ultrasonography Radiological and Ultrasound Technology Phantoms Imaging business.industry Attenuation Water Equipment Design Frequency dependence Computational physics Agar Graphite Ultrasonic sensor Glass Laboratories business Plastics Order of magnitude |
| Zdroj: | Journal of Ultrasound in Medicine. 18:615-631 |
| ISSN: | 0278-4297 |
| DOI: | 10.7863/jum.1999.18.9.615 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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