An Integrated Ring CMUT Array for Endoscopic Ultrasound and Photoacoustic Imaging

Title
An Integrated Ring CMUT Array for Endoscopic Ultrasound and Photoacoustic Imaging
Authors
Amin NikoozadehChienliu ChangJung Woo ChoeAnshuman Bhuyan이병철Azadeh MoiniButrus T. Khuri-Yakub
Issue Date
2013-07
Publisher
IEEE International Ultrasonics Symposium 2013
Citation
, 1178-1181
Abstract
This work presents our preliminary results on developing an integrated quad-ring CMUT array for endoscopic ultrasound and photoacoustic imaging. We have designed and fabricated a ring capacitive micromachined ultrasonic transducer (CMUT) array composed of 512 elements distributed among four concentric rings each having 128 elements. The operational frequency of each ring was chosen to achieve a similar pressure beam profile for all the rings. The device’s inner and outer diameters measure 5.0 and 10.1 mm, respectively. The CMUT array was integrated with custom front-end ICs using a quartz fan-out board. This bench-top assembly allowed connection to a single ring (i.e., 128 elements) at a time. Thus far, we have built assemblies with connections to the two outer rings. We have successfully demonstrated real-time volumetric imaging with these assemblies using nylon wire phantom and metal spring phantom.
URI
http://pubs.kist.re.kr/handle/201004/58507
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KIST Publication > Conference Paper
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