Title :
A biopsy sensor for measurement of sound velocity of tissue
Author :
Matsunaka, T. ; Yamashita, S.
Author_Institution :
Aloka Co. Ltd., Tokyo, Japan
Abstract :
A biosensor that can obtain an accurate sound velocity in a part of the soft organic tissue is described. This sensor is in the biopsy needle with a diameter of 1.6 mm and is inserted into the tissue to be measured. The sensor consists of a small transmitting ultrasonic transducer with a center frequency of 5 MHz and another unit of the same transducer positioned 5 mm away from the first for use as the receiving transducer. Measurements of the sound velocity in liquids, gel, and excised pig liver were taken as part of a feasibility study to determine its application in vivo. The accuracy was approximately within ±0.25 m/s
Keywords :
biomedical equipment; biomedical measurement; biomedical ultrasonics; ultrasonic velocity measurement; 1.6 mm; 5 MHz; biopsy needle; biopsy sensor; center frequency; excised pig liver; gel; liquids; small transmitting ultrasonic transducer; soft organic tissue; sound velocity measurement; Acoustic sensors; Acoustic transducers; Biopsy; Biosensors; Frequency; Liquids; Needles; Ultrasonic transducers; Ultrasonic variables measurement; Velocity measurement;
Conference_Titel :
Ultrasonics Symposium, 1990. Proceedings., IEEE 1990
Conference_Location :
Honolulu, HI
DOI :
10.1109/ULTSYM.1990.171600
