# 3-D Motion Correction for Volumetric Super-Resolution Ultrasound (SR-US) Imaging

## TL;DR

This paper introduces a 3-D motion correction method for volumetric super-resolution ultrasound imaging, significantly improving localization accuracy during handheld probe imaging.

## Contribution

It extends a two-stage motion correction technique to 3-D ultrasound, enabling effective compensation for probe motion in super-resolution imaging.

## Key findings

- Reduced localization error from 136 to 18 micrometres
- Demonstrated effectiveness with 3-D microvascular flow simulation
- Improved image quality in handheld ultrasound imaging

## Abstract

Motion during image acquisition can cause image degradation in all medical imaging modalities. This is particularly relevant in 2-D ultrasound imaging, since out-of-plane motion can only be compensated for movements smaller than elevational beamwidth of the transducer. Localization based super-resolution imaging creates even a more challenging motion correction task due to the requirement of a high number of acquisitions to form a single super-resolved frame. In this study, an extension of two-stage motion correction method is proposed for 3-D motion correction. Motion estimation was performed on high volumetric rate ultrasound acquisitions with a handheld probe. The capability of the proposed method was demonstrated with a 3-D microvascular flow simulation to compensate for handheld probe motion. Results showed that two-stage motion correction method reduced the average localization error from 136 to 18 micrometres.