Title :
Catheter mounted Doppler ultrasound transducers
Author :
Ritter, T.A. ; Shung, K.K. ; Voie, A. ; Moehring, M.
Author_Institution :
NIH Resource Center for Med. Ultrasonic Transducer Technol., Pennsylvania State Univ., University Park, PA, USA
Abstract :
A transducer was designed and fabricated for assessment of cochlear blood flow using 12.5 MHz microvascular Doppler ultrasonography. The design includes a 2-2 composite element, front acoustic matching layers, a rear “unmatching” layer, electrical tuning, and a 0.5 mm diameter brass core. Tests indicate low insertion loss, performance comparable to model predictions, and effective detection of cochlear blood flow
Keywords :
Doppler measurement; biomedical transducers; biomedical ultrasonics; blood flow measurement; ear; ultrasonic transducers; 0.5 mm; 12.5 MHz; 2-2 composite element; brass core; catheter mounted Doppler ultrasound transducers; cochlear blood flow assessment; cochlear blood flow detection; electrical tuning; front acoustic matching layers; insertion loss; medical diagnostic imaging; microvascular Doppler ultrasonography; rear unmatching layer; Acoustic testing; Acoustic transducers; Blood flow; Catheters; Insertion loss; Performance loss; Predictive models; Ultrasonic imaging; Ultrasonic transducers; Ultrasonography;
Conference_Titel :
Ultrasonics Symposium, 2000 IEEE
Conference_Location :
San Juan
Print_ISBN :
0-7803-6365-5
DOI :
10.1109/ULTSYM.2000.921543
