渋谷 昇¹, 伊藤 建一¹, 瀬沼 訓行², 横井 浩³, 田村 清⁴

Noboru SHIBUYA¹, Kenichi ITO¹, Noriyuki SENUMA², Hiromu YOKOI³, Kiyoshi TAMURA⁴

¹東京農工大学工学部電子工学科, ²日本電気株式会社, ³日生病院第一外科, ⁴アロカ株式会社

¹Tokyo University of Agri & Tech,Faculty of Erectronic Engineering, ²Nippon Electric Co., Ltd., ³Nissei Hospital sergical Div., ⁴Aloka Co., Ltd.

キーワード : Three dimensional display, Real-time processing, Digital scan converter, Boundary detected image, Electroscanning equipment

An ultrasonic diagnostic equipment for a high-speed three dimensional display has been developed. The equipment has a digital frame memory of 256X256 pixel. Several image processing techniques are utilized in real-time for the three dimensional display of ultrasonogram; ie smoothing, 2-level, boundary detection and hidden line extinction processings are performed. Several frames of the conventional but boundary detected B mode images are superimposed in the frame memory. When storing images into the memory, the location is shifted from an image to image. The only desired region in a whole B mode image can be displayed three dimensionally. We can obtain a three dimensional observation of the object in about 2 seconds. The developed system may be appricable for the clinical use.