Interlaboratory Comparison of Ultrasonic Backscatter Coefficient Measurements From 2 to 9 MHz
نویسندگان
چکیده
منابع مشابه
Interlaboratory comparison of ultrasonic backscatter coefficient measurements from 2 to 9 MHz.
OBJECTIVE As are the attenuation coefficient and sound speed, the backscatter coefficient is a fundamental ultrasonic property that has been used to characterize many tissues. Unfortunately, there is currently far less standardization for the ultrasonic backscatter measurement than for the other two, as evidenced by a previous American Institute of Ultrasound in Medicine (AIUM)-sponsored interl...
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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 speed...
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OBJECTIVE To translate quantitative ultrasound (QUS) from the laboratory into the clinic, it is necessary to demonstrate that the measurements are platform independent. Because the backscatter coefficient (BSC) is the fundamental estimate from which additional QUS estimates are calculated, agreement between BSC results using different systems must be demonstrated. This study was an intercompari...
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A set of test samples, all containing ultrasonically equivalent tissue-mimicking material, was produced and measurements of ultrasonic speed and ultrasonic attenuation coefficients were made at seven laboratories using various techniques. The ultrasonic speed values agree well with one another, having a spread of about 0.3 per cent; thus, speed values for tissue parenchyma appearing in the lite...
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ژورنال
عنوان ژورنال: Journal of Ultrasound in Medicine
سال: 2005
ISSN: 0278-4297
DOI: 10.7863/jum.2005.24.9.1235