Synthetic Radial Aperture Focusing (TRUS-rSAF)
A theory-based design framework for 3D transrectal ultrasound imaging
Ph.D. research · Johns Hopkins University
Low-cost 3D transrectal ultrasound probes scan by manual rotation, which introduces scanning-angle disorientation and non-uniform volumetric image quality. I proposed synthetic radial aperture focusing (rSAF) — synthesizing transmit/receive events across scanning angles to reconstruct each radial plane — and derived the first closed-form analytical description of the method, delineating spatial resolution and grating-lobe positions in the radial dimension. On that foundation I built a design framework and optimization workflow; the optimized TRUS-rSAF improved spatial resolution by up to 50% over a clinical 3D TRUS system.
Key publications
- Synthetic radial aperture focusing to regulate manual volumetric scanning for economic transrectal ultrasound imaging — Ultrasonics, 2022
- A novel design framework of synthetic radial aperture focusing for volumetric transrectal ultrasound imaging — Journal of Computational Design and Engineering, 2022
- Radial synthetic aperture focusing to regulate scanning angle disorientation in a low-cost 3D transrectal ultrasound imaging — IEEE IUS 2022