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

2006 ◽  
Vol 53 (2) ◽  
pp. 474-482 ◽  
Author(s):  
F.L. Degertekin ◽  
R.O. Guldiken ◽  
M. Karaman
Keyword(s):  
Annular Ring ◽  
Forward Looking

Multiple Annular Ring Capacitive Micromachined Ultrasonic Transducer Arrays for Forward-Looking Intravascular Ultrasound Imaging Catheters

2007 ◽  
Author(s):  
Rasim O. Guldiken ◽  
Jaime Zahorian ◽  
Mujdat Balantekin ◽  
Mustafa Karaman ◽  
F. Levent Degertekin
Keyword(s):  
Real Time ◽  
Intravascular Ultrasound ◽  
Signal To Noise Ratio ◽  
Ultrasonic Transducer ◽  
Transimpedance Amplifiers ◽  
Silicon Area ◽  
Annular Ring ◽  
Intravascular Ultrasound Imaging ◽  
Array Configuration ◽  
Forward Looking

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.

Camera View Control for Railway Forward Looking System

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