Annular-ring CMUT arrays for forward-looking IVUS: transducer characterization and imaging

Author(s):  
F.L. Degertekin ◽  
R.O. Guldiken ◽  
M. Karaman
Keyword(s):  
Author(s):  
Rasim O. Guldiken ◽  
Jaime Zahorian ◽  
Mujdat Balantekin ◽  
Mustafa Karaman ◽  
F. Levent Degertekin

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.


2014 ◽  
Vol 134 (10) ◽  
pp. 921-929 ◽  
Author(s):  
Nozomi Nagamine ◽  
Masato Ukai
Keyword(s):  

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