- This event has passed.
MAE PhD Defense – Zhouchen Wang
October 18, 2016 @ 10:00 am
Title: Dual-frequency Ultrasound Transducers for Medical Imaging (Advisor: Dr. Xiaoning Jiang)
Date: October 18, 2016
Time & Location: 10:00 AM EB3 – 3235
Conventional single frequency ultrasound transducers with a limited bandwidth (-6 dB fractional bandwidth < 100 %) are not optimized for the contrast ultrasonography (eg. harminc, sub-harmonic, and super-harmonic) and elastography (eg. acoustic radiation force impulse imaging (ARFI)) technology, which may need ultrasound waves with different frequencies for excitation and detection, respectively. In this dissertation research, several types of dual-frequency ultrasound transducers and arrays were designed, fabricated and tested for broadband imaging including harmonic/sub-harmonic imaging, super-harmonic or acoustic angiography imaging, and IVUS-ARFI.
Zhuochen Wang was born in Tianjin, China, in 1984. He received his B.S. degree in mechanical engineering from Tianjin University in 2005, and his M.S. degree in mechanical engineering from University of Akron in 2012. Zhuochen joined Dr. Xiaoning Jiang’s Micro/Nano Engineering Lab at North Carolina State University in 2012, working on the design, fabrication and characterization of piezoelectric ultrasound transducers and the associated imaging study. His research interest includes intravascular ultrasound (IVUS) transducer, dual-frequency ultrasound transducer, transducer array and acoustic radiation force impulse imaging (ARFI) application.