Abstract
Purpose
Through analysis, the elastograms characteristics of breast lesions of Chinese women,
a suitable diagnostic standard of quasistatic ultrasound elastography (UE) for Chinese
women was proposed.
Methods
From June 2010 to March 2012, 1036 consecutive female patients (mean age, 44 years
old) with breast lesions were recruited into a multicenter retrospective study, which
involved 8 centers across China. Each institutional ethic review board approved the
study, and all the patients gave written informed consent. All breast lesions underwent
ultrasound and UE examination. Two radiologists analyzed the elastograms and separated
the elastograms into 10 types. A final diagnosis was made on the basis of histologic
findings. The characteristics of the elastograms were analyzed. Receiver operating
characteristic curves were plotted for evaluating the diagnostic performance. Sensitivity,
specificity, and accuracy were calculated. Differences in sensitivity, specificity,
and accuracy were tested by using the McNemar test.
Results
There were 1150 lesions (593 benign, 557 malignant). There was a highly significant
correlation between the elastogram color distribution and the percentage of malignant
lesions, with a value of 0.92 (2P < .0001). Through analysis the different malignant percentages in different elastogram
types, UE diagnostic standard was proposed, which was correlated with the blue percentage
in the elastogram. The specificity, sensitivity, and accuracy of UE were 86.4%, 80.8%,
and 83.5%, respectively. The specificity and accuracy of UE were higher than with
ultrasound. The area under the curve was 0.86.
Conclusion
UE could give valuable assessment in the diagnosis of breast lesions. The proposed
UE diagnostic standard was suitable for Chinese women.
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Article info
Publication history
Published online: July 08, 2013
Accepted:
February 4,
2013
Received in revised form:
January 22,
2013
Received:
November 15,
2012
Identification
Copyright
© 2013 Elsevier Inc. Published by Elsevier Inc. All rights reserved.
