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[Automated mammary sonography and mammography: the differentiation of benign and malignant breast lesions]
K Richter1, B Hamm, S H Heywang-Köbrunner
1Institut für Röntgendiagnostik, Charité, Humboldt Universität, Berlin.
Purpose:
A prospective study on the differentiation of breast lesions was carried out using experimental combination schemes of mammography and automatic sonography.
Materials And Methods:
X-ray mammograms and a B image from automatic sonography of 39 malignant and 41 benign lesions as well as 40 cases without lesions were separately examined by four experienced diagnosticians. The observers differentiated the findings mammographically and by measurement in the B images.
Results:
For two examiners the combination of mammography and automatic sonography gave with regard to the differentiation of breast lesions an improvement in sensitivity of 3 or 5% and in specificity of 31 and 18%, respectively, as compared to mammography alone while for the other two examiners an improved specificity of 21 and 36%, respectively, was accompanied by an 8 and 10% decrease in sensitivity as compared to mammography alone.
Conclusions:
The differentiating criteria from automatic sonography and mammography can, in principle, be used to evaluate the dignity of breast lesions. However, an optimization is necessary since the improvement in specificity does not compensate the loss in sensitivity.