井出 正男¹, 増澤 信義¹, 竹原 靖明²

Masao IDE¹, Nobuyoshi MASUZAWA¹, Yasuaki TAKEHARA²

¹武蔵工業大学電子通信工学科, ²関東中央病院外科

¹Department of Electronics and Communication Engineering, Musashi Institute of Technology, ²Department of Surgery, Kanto Central Hospital

キーワード : multiple section, simultaneous display, mass screening, breast cancer, automatic arc scan

Tendency of increase of breast cancer patients is seen lately in Japan. Discovery and treatment of the cancer in early stage is most important for the survival of the patients. Accordingly development of ultrasonic diagnostic equipment for mass screening of the breast is demanded.
This paper reports on a multiple section tomograms simultaneous display ultrasonic diagnostic equipment which was designed and developed for mass screening of the breast. This equipment obtains eight tomograms of different cross sections in one frame by one trip of scanning. Ultrasonic probe made up of eight transducers arrayed in line is set up to an arc scanner, which scans whole examined area automatically. Transducers are energized sequentially and transmitting and receiving circuits are activated serially. Scanning lines which construct respective tomograms are switched in time sharing and eight tomograms are displayed in one frame. As echograms of whole examined area are displayed and recorded in one frame, this equipment is convenient in reading and keeping the echograms and examination time can be reduced. Outline of the equipment and examples of the clinical results are presented.