Conference proceeding
80 MHz Intravascular Ultrasound (IVUS) Transducer
2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS), pp 222-225
01 Jan 2011
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
[Pb(Mg1/3Nb2/3)O-3]0.63[PbTiO3]0.37 (PMN-PT) free-standing film of comparable piezoelectric properties to bulk material with thickness of 30 mu m has been fabricated using a modified precursor coating approach. At 1 kHz, the dielectric permittivity and loss were 4,364 and 0.033, respectively. The remnant polarization and coercive field were 28 mu C/cm(2) and 18.43 kV/cm. The electromechanical coupling coefficient k(t) was measured to be 0.55, which was close to that of bulk PMN-PT single crystal material. Based on this film, high frequency (82 MHz) miniature ultrasonic transducers were fabricated with 65% bandwidth and 23 dB insertion loss. Axial and lateral resolutions were determined to be as high as 35 mu m and 176 mu m. In vitro intravascular imaging on healthy rabbit aorta and human coronary artery was performed from the thin film transducers. In comparison with a 35 MHz IVUS transducer, the 80 MHz one showed superior resolution and contrast with satisfactory penetration depth. The imaging results suggest that PMN-PT free-standing thin film technology is a feasible and efficient way in fabricating very high frequency ultrasonic transducers.
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2 citations in Scopus
Details
- Title
- 80 MHz Intravascular Ultrasound (IVUS) Transducer
- Creators
- Xiang Li - University of Southern CaliforniaWei Wu - Drexel UniversityYoungsoo Chung - Drexel UniversityWan Y. Shih - Drexel UniversityWei-Heng Shih - Drexel UniversityQifa Zhou - University of Southern CaliforniaK. Kirk Shung - University of Southern CaliforniaIEEE
- Publication Details
- 2011 IEEE INTERNATIONAL ULTRASONICS SYMPOSIUM (IUS), pp 222-225
- Series
- IEEE International Ultrasonics Symposium
- Publisher
- IEEE
- Number of pages
- 4
- Grant note
- Nanotechnology Institute USC Provost Fellowship Commonwealth of Pennsylvania's Ben Franklin Technology Development Authority through Ben Franklin Technology P41-EB2182 / NIH; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- School of Biomedical Engineering, Science, and Health Systems; Materials Science and Engineering
- Web of Science ID
- WOS:000309918400053
- Scopus ID
- 2-s2.0-84869099229
- Other Identifier
- 991019167601304721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Engineering, Electrical & Electronic