Linked Life Data

20690431

Source:http://linkedlifedata.com/resource/pubmed/id/20690431

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
2010-8-9
pubmed:abstractText
Ultrasonic backscatter is useful for characterizing tissues and several groups have reported methods for estimating backscattering properties. Previous interlaboratory comparisons have been made to test the ability to accurately estimate the backscatter coefficient (BSC) by different laboratories around the world. Results of these comparisons showed variability in BSC estimates but were acquired only for a relatively narrow frequency range, and, most importantly, lacked reference to any independent predictions from scattering theory. The goal of this study was to compare Faran-scattering-theory predictions with cooperatively-measured backscatter coefficients for low-attenuating and tissue-like attenuating phantoms containing glass sphere scatterers of different sizes for which BSCs can independently be predicted. Ultrasonic backscatter measurementswere made for frequencies from 1 to 12 MHz. Backscatter coefficients were estimated using two different planar-reflector techniques at two laboratories for two groups of phantoms. Excellent agreement was observed between BSC estimates from both laboratories. In addition, good agreement with the predictions of Faran's theory was obtained, with average fractional (bias) errors ranging from 8-14%. This interlaboratory comparison demonstrates the ability to accurately estimate parameters derived from the BSC, including an effective scatterer size and the acoustic concentration, both of which may prove useful for diagnostic applications of ultrasound tissue characterization.
pubmed:grant
pubmed:commentsCorrections
http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-10478971, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-10574336, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-1435591, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-15784769, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-16123184, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-1701584, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-2745872, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-3057712, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-3519721, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-3541334, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-3745664, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-6396927, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-6491053, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-713972, http://linkedlifedata.com/resource/pubmed/commentcorrection/20690431-9004422
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0161-7346
pubmed:author
pubmed:issnType
Print
pubmed:volume
32
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
48-64
pubmed:dateRevised
2011-9-26
pubmed:meshHeading
pubmed:year
2010
pubmed:articleTitle
Interlaboratory comparison of backscatter coefficient estimates for tissue-mimicking phantoms.
pubmed:affiliation
University of Wisconsin-Madison, Wisconsin Institutes for Medical Research, 1111 Highland Ave., Madison, WI 53705, USA.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, N.I.H., Extramural