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Volumetric imaging using single chip integrated CMUT-on-CMOS IVUS array.

Authors
  • Tekes, Coskun
  • Zahorian, Jaime
  • Gurun, Gokce
  • Satir, Sarp
  • Xu, Toby
  • Hochman, Michael
  • Degertekin, F Levent
Type
Published Article
Journal
Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Publication Date
Jan 01, 2012
Volume
2012
Pages
3195–3198
Identifiers
DOI: 10.1109/EMBC.2012.6346644
PMID: 23366605
Source
Medline
License
Unknown

Abstract

An intravascular ultrasound (IVUS) catheter that can provide forward viewing volumetric ultrasound images would be an invaluable clinical tool for guiding interventions. Single chip integration of front-end electronics with capacitive micromachined ultrasonic transducers (CMUTs) is highly desirable to reduce the interconnection complexity and enable miniaturization in IVUS catheters. For this purpose we use the monolithic CMUT-on-CMOS integration where CMUTs are fabricated directly on top of pre-processed CMOS wafers. This minimizes parasitic capacitances associated with connection lines. We have recently implemented a system design including all the required electronics using 0.35-µm CMOS process integrated with a 1.4-mm diameter CMUT array. In this study, we present the experimental volumetric imaging results from an ex-vivo chicken heart phantom. The imaging results demonstrate that the single-chip forward looking IVUS (FL-IVUS) system with monolithically integrated electronics has potential to visualize the front view of coronary arteries.

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