Diverging acoustic lenses offer a promising way to extend the field of view (FOV) in Row-Column Addressed (RCA) ultrasound imaging, transforming rectilinear scans into curvilinear 3D volumes ideal for imaging large organs. However, traditional lenses are typically low-resolution and not optimized for high-frequency transducers. In this work, researchers demonstrate that custom acoustic lenses—fabricated using 3D printing, casting, and CNC machining—can be tailored for high-resolution RCA transducers. Various lens materials and geometries were tested, with the PMMA-RTV compound lens achieving the largest FOV (24.0°) while maintaining solid performance at 6 MHz. This study shows that thermoplastics such as PMMA, TPX, and PS are suitable for making low-attenuation, wide-angle diverging lenses, opening the door to cost-effective, high-resolution volumetric imaging for clinical applications. Find out more from the paper linked below!
https://orbit.dtu.dk/en/publications/diverging-polymer-acoustic-lens-design-for-high-resolution-row-co
