[Power Doppler US in breast masses: correlation of spectral analysis findings with pathological features]

The purpose of this study was to clarify the usefulness of power Doppler imaging for the diagnosis of breast masses. Materials were histologically confirmed breast masses: 24 benign lesions, 4 non-invasive carcinomas, and 54 invasive carcinomas. In invasive breast carcinoma, pathological examination was used to classify the degree of intratumor fibrous stroma (IFS) into three groups. The relationships between IFS and Doppler spectral parameters (Vmax, Vmin, PI, RI) were evaluated retrospectively. High PI and low Vmin values were well correlated with IFS grade. Carcinomas with low IFS grades had higher Vmax values than benign lesions.