Open Access
Forward-Viewing Ring-Annular Ultrasound Array for Intravascular Imaging
TLDR
In this paper, a forward viewing ring-annular array for intravascular ultrasound imaging has been proposed, which is appropriate for over-the-wire delivery but limits the forward-looking aperture to a ring-ANNular array.Abstract:
In this paper, we present some initial results from our proposed forward viewing ring-annular array for intravascular ultrasound imaging. We have investigated array design and image synthesis allowing simultaneous sideward imaging at 20 MHz and forward imaging at 10 MHz from the same array. This design is appropriate for over-the-wire delivery but limits the forward-looking aperture to a ring-annular array. In particular, a 1200 /spl mu/m diameter ring-annular array with 64 elements has been constructed. The measured forward- viewing radiation pattern of an individual element indicates an acceptance angle range of over 90/spl deg/. Currently, there are significant sensitivity and center frequency variations among the elements. Nevertheless, images of point targets are obtained as a proof-of-concept. Future improvements of the array will be discussed.read more
Citations
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Journal ArticleDOI
Annular-ring CMUT arrays for forward-looking IVUS: transducer characterization and imaging
TL;DR: It is demonstrated 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.
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3-D ultrasound imaging using a forward-looking CMUT ring array for intravascular/intracardiac applications
TL;DR: This work presents compelling, full-synthetic, phased-array volumetric images from a forward-viewing capacitive micromachined ultrasonic transducer (CMUT) ring array wire bonded to a custom integrated circuit front end.
Journal ArticleDOI
Volumetric real-time imaging using a CMUT ring array
Jung Woo Choe,Omer Oralkan,Amin Nikoozadeh,M. Gencel,Douglas N. Stephens,Matthew O'Donnell,David J. Sahn,Butrus T. Khuri-Yakub +7 more
TL;DR: The results show that SPA with Hadamard coding and aperture weighting is a good option for ring-array imaging, which achieves better image resolution and comparable signal-tonoise ratio at a much faster image acquisition rate.
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New fabrication techniques for ring-array transducers for real-time 3D intravascular ultrasound.
TL;DR: In this article, two 2D array transducers integrated into a Cook Medical, Inc. inferior vena cava (IVC) filter deployment device have been described, which can be used to efficiently manufacture these types of devices in greater than prototype numbers.
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Real-time 3-D ultrasound guidance of interventional devices
TL;DR: A new generation of miniature ring-array transducers integrated into the catheter deployment kits of interventional devices to enable real-time 3-D ultrasound scanning for improved guidance of minimally invasive procedures is developed.
References
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