Ergodic encoding for single-element ultrasound imaging in vivo

TL;DR

ERUI introduces a novel ultrasound imaging technique that uses an ergodic cavity with a single sensor to produce high-quality images, reducing hardware complexity and cost for portable devices.

Contribution

The paper presents ERUI, a new method that encodes scatterer positions using an ergodic cavity with only one ultrasonic sensor, unlike traditional multi-sensor systems.

Findings

ERUI achieves comparable image quality to conventional methods.

The approach reduces hardware complexity and cost.

Feasibility demonstrated for portable ultrasound devices.

Abstract

Conventional ultrasound imaging relies on the computation of geometric time delay from multiple sensors to detect the position of a scatterer. In this paper, we present Ergodic Relay Ultrasound Imaging (ERUI), a method that utilizes an ergodic cavity down to a single ultrasonic sensor for ultrasound imaging. With the proposed method, the ergodic cavity creates a unique temporal signature that encodes the position of a scatterer. When compared to standard approaches, ERUI enables the generation of images of comparable quality while utilizing fewer detector elements. Our results suggest that ERUI has the potential to achieve image resolution similar to that of traditional imaging techniques, shifting the complexity from hardware to sofware. The demonstrated feasibility offers a promising path towards ultrasound probes with reduced costs and complexity for more portable scanning devices.