Annular-ring CMUT arrays for forward-looking IVUS: Transducer characterization and imaging
Yükleniyor...
Dosyalar
Tarih
2006-02
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
IEEE
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In this study, a 64-element, 1.15-mm diameter annular-ring capacitive micromachined ultrasonic transducer (CMUT) array was characterized and used for forward-looking intravascular ultrasound (IVUS) imaging tests. The array was manufactured using low-temperature processes suitable for CMOS electronics integration oil a single chip. The measured radiation pattern of a 43 X 140- mu m(2) array element depicts a 40 degrees view angle for forward-looking imaging around a 15-MHz center frequency in agreement with theoretical models. Pulse-echo measurements show a -10-dB fractional bandwidth of 104% around 17 MHz for wire targets 2.5 mm away from the array in vegetable oil. For imaging and SNR measurements, RF A-scan data sets from various targets were collected using all interconnect scheme forming a 32-element array configuration. An experimental point spread function was obtained and compared with simulated and theoretical array responses, showing good agreement. Therefore, this study demonstrates that annular-ring CMUT arrays fabricated with CMOS-compatible processes are capable of forward-looking IVUS imaging, and the developed modeling tools can be used to design improved IVUS imaging arrays.
Açıklama
Anahtar Kelimeler
Micromachined ultrasonic transducers, Intravascular ultrasound, Pattern, Capacitive micromachined ultrasonic transducer (CMUT), Imaging arrays, Intravascular ultrasound (IVUS), Arrays, Bandwidth, CMOS integrated circuits, Mathematical models, Ultrasonic imaging, Ultrasonic transducers, Article, Computer assisted diagnosis, Endoscopic echography, Equipment, Equipment design, Evaluation, Image enhancement, Instrumentation, Methodology, Reproducibility, Sensitivity and specificity, Transducer, Equipment design, Equipment failure analysis, Image enhancement, Image interpretation, Computer-assisted, Reproducibility of results, Sensitivity and specificity, Transducers, Ultrasonography, Interventional
Kaynak
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
53
Sayı
2
Künye
Değertekin, F. L., Güldiken, R. O. & Karaman, M. (2006). Annular-ring CMUT arrays for forward-looking IVUS: Transducer characterization and imaging. IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 53(2), 474-482. doi:10.1109/TUFFC.2006.1593387
