1The Second Department of Surgery, Saitama Medical Center, Saitama Medical School, 2Department of Clinical Pathology, Saitama Medical Center, Saitama Medical School, 3Institute of Medical Electronics, Faculty of Medicine, University of Tokyo
Ultrasonography, Breast Tumor, Three-Dimensional Image, Image Processing
Routine ultrasonography in patients with breast tumors is useful for determining if tumors are benign or malignant. We attempted to improve three-dimensional (3-D) ultrasonography of breast tumors. Ultrasonograms using conventional mechanical arc scanning equipment (7.5 MHz, Aloka SSD 270) were obtained at 1 and 2 mm intervals transversely and recorded on videotape. The ultrasonographic images on the videotape were input into a minicomputer, and the breast tumor shape was graphically displayed in three dimensions. The 3-D images of breast cancer had jagged margins that could be evaluated more clearly than the original ultrasonogram. This finding suggests that the 3-D ultrasonogram has the potential to differentiate malignancy from benign tumors better than ordinary ultrasonography.