Congratulations to Graham on his PhD defense! Thanks for all your hard work and good luck in Seattle! … [Read more...]

Congrats to Graham on his new paper, "Dual-Resonance (16/32 MHz) Piezoelectric Transducer With a Single Electrical Connection for Forward-Viewing Robotic Guidewire," which was just published in the April issue of IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control! This article describes development of a sub-millimeter transducer that can image simultaneously at two frequencies (high resolution and high penetration depth) on the end of a robotically-steered guidewire to allow … [Read more...]

Congrats to Stephan, whose work investigating a system for simultaneous ultrasound and CT imaging of the heart and development of a CT-compatible ultrasound transducer is featured on this month’s cover of IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control.  Read the article here . See the cover here.  Way to go, Stephan!   … [Read more...]

Congrats to Bowen on publication of his new paper, "Very low-frequency radial modulation for deep penetration contrast-enhanced ultrasound imaging," in Ultrasound in Medicine and Biology!  This article describes a new approach for imaging microbubble contrast agents by perturbing the microbubbles with a frequency much lower than the resonance frequency of the bubble. This technique could be useful in applications where blood flow imaging deep within the body is needed (for example, in abdominal … [Read more...]

Our proceedings papers from the 2021 IEEE International Ultrasonics Symposium are available here.     … [Read more...]

Congratulations to Stephan for winning the best student paper competition at the recent virtual 2021 IEEE International Ultrasonics Symposium!  Stephan's paper is entitled: "A thin, high penetration depth phased array transducer with a metamaterial acoustic backing for cardiac imaging with X-ray computed tomography compatibility." Great work, Stephan! … [Read more...]

Congratulations to Sunny on her new paper on forward-viewing intravascular blood flow imaging, which was recently published in Ultrasonics!  This work investigates the effect of the catheter-based measurement device itself on the ability to make accurate intravascular hemodynamic measurements, finding that there is minimum blood flow disruption for a hollow catheter.   … [Read more...]

We are pleased to announce funding of a new award from the National Institutes of Health for developing a novel system for 3D interventional imaging in coronary artery disease, described in more detail here.  Thanks to all lab members and collaborators for making this possible!  We are excited to work on development and testing of this system and on the impact it can have for patients. … [Read more...]

Our sub-millimeter, steerable robotic guidewire with integrated ultrasound imaging developed in collaboration with Jaydev Desai's lab and Zach Bercu from Emory Interventional Radiology was named a Featured Article in the July 2021 issue of IEEE Transactions on Biomedical Engineering!  Congratulations to Graham and Achraj! The feature can be seen here. Read the full article here. … [Read more...]

Congratulations to Stephan! His paper on developing ultrasound transducers with improved X-ray computed tomography (CT)-compatibility was accepted for publication in Medical Physics!  This paper describes materials that can be used in ultrasound transducers to allow simultaneous acquisition of ultrasound and CT for cardiac gating and imaging in coronary artery disease.  The new array transducer Stephan developed for cardiac imaging using these materials exhibits ~24× improved radiographic … [Read more...]