Title:
Microscale Integrated Systems for Ultrasound Imaging and Sensing in Coronary Arteries
Microscale Integrated Systems for Ultrasound Imaging and Sensing in Coronary Arteries
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Author(s)
Degertekin, F. Levent
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Abstract
Current intravascular ultrasound (IVUS) imaging systems only offer side-looking capabilities
and cannot generate images of the volume in front of the catheter. An IVUS catheter that
can provide forward-viewing volumetric ultrasound images would be an invaluable clinical
tool for guiding interventions in coronary arteries for treatment of chronic total occlusions
and for helping stent deployment. In this talk, we describe design, fabrication and testing of
a forward-viewing IVUS system where all the main functionalities of transmitting and
receiving ultrasonic waves in the 10-20MHz range with more than 100 array elements are
integrated in a 1.5mm diameter donut shaped silicon chip. The imaging system is based on
monolithic integration of Capacitive Micromachined Ultrasonic Transducers (CMUTs) and
custom designed CMOS electronic in silicon. This approach requires only about a dozen
external electrical connections enabling a highly flexible catheter. We discuss the design and
fabrication process and present initial imaging results obtained by the system on relevant
biological samples. Future capabilities that can be integrated to this platform for dual-mode
imaging and therapeutic devices are also discussed.
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Date Issued
2012-01-24
Extent
48:47 minutes
Resource Type
Moving Image
Resource Subtype
Lecture