小林 正幸¹, 高田 伸¹, 来住野 修², 島田 明子², 馬場 一憲³, 小高 明雄¹, 村田 戒　　¹, 高木 俊二¹, 藤岡　 正志¹

Masayuki KOBAYASHI¹, Shin TAKADA¹, Osamu KISHINO², Akiko SHIMADA², Kazunori BABA³, Akio ODAKA¹, Mamoru MURATA¹, Shunji TAKAGI¹, Masashi FUJIOKA¹

¹埼玉医科大学総合医療センター第2外科, ²埼玉医科大学総合医療センター中央検査部, ³東京大学医用電子研究施設

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

キーワード : 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.