Pixel-reassignment in Ultrasound Imaging
Medical Physics
2022-01-25 v2 Image and Video Processing
Abstract
We present an adaptation of the pixel-reassignment technique from confocal fluorescent microscopy to coherent ultrasound imaging. The method, Ultrasound Pixel-Reassignment (UPR), provides a resolution and signal to noise (SNR) improvement in ultrasound imaging by computationally reassigning off-focus signals acquired using traditional plane-wave compounding ultrasonography. We theoretically analyze the analogy between the optical and ultrasound implementations of pixel reassignment, and experimentally evaluate the imaging quality on tissue-mimicking acoustic phantoms. We demonstrate that UPR provides a resolution improvement and a SNR improvement in in-vitro scans, without any change in hardware or acquisition scheme.
Cite
@article{arxiv.2106.07978,
title = {Pixel-reassignment in Ultrasound Imaging},
author = {Tal I. Sommer and Ori Katz},
journal= {arXiv preprint arXiv:2106.07978},
year = {2022}
}