Multiple annular ring capacitive micromachined ultrasonic transducer arrays for forward-looking intravascular ultrasound imaging catheters
AuthorGüldiken, Rasim Oytun
Zahorian, Jaime S.
Değertekin, Fahrettin Levent
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CitationGüldiken,R. O., Zahorian, J. S., Balantekin, M., Karaman, M. & Değertekin, F. L. (2007). Multiple annular ring capacitive micromachined ultrasonic transducer arrays for forward-looking intravascular ultrasound imaging catheters. Paper presented at the , 2 179-180. doi:10.1115/IMECE2007-42493
We investigate multiple-annular-ring CMUT array configuration for forward-looking intravascular ultrasound (FL-IVUS) imaging. This configuration has the potential for independent optimization of each ring and uses the silicon area more effectively without any particular drawback. We designed and fabricated a sample 1mm diameter dual annular ring CMUT test array which consists of 24 transmit and 32 receive elements. For imaging experiments, we designed IC chips that contain 8 transimpedance amplifiers, a multiplexer and a buffer. The real time-pulse echo experiments obtained with designed IC electronics show 26dB Signal to Noise Ratio (SNR) from a 3.5 mm away aluminum reflector in oil. This paper presents our first efforts in obtaining real time imaging with designed IC chips which is one step before CMUT on CMOS implementation.
SourceASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
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