The study of an ultrasonic endocsope with a broadband transducer

Abstract

A new ultrasonic endoscope with a broadband transducer (GF-240CPM) has been developed by OLYMPUS Optical Co. LTD. The configuration of the scope is similar to conventional ultrasonic endoscopes. The tranceducer made from CPM (Composit Pieso-electric Material) can scan wide range from approximately 5MHz to 20MHz in frequency. Twelve gastrointestinal lesions were examined by this scope. High resolusional images of the lesions with the broadband scanning range were obtained by this new instrument. Both shallow and deep lesion were clearely visualized. The new ultrasonic endoscope and monitor system was quite usefull to examine the gastrointestinal lesions, and is likely to lead to further development in this field.