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On Instabilities of Conventional Multi-Coil MRI Reconstruction to Small Adverserial Perturbations

2021-02-25 18:27:51
Chi Zhang, Jinghan Jia, Burhaneddin Yaman, Steen Moeller, Sijia Liu, Mingyi Hong, Mehmet Akçakaya
arXiv_CV
         
Abstract

Although deep learning (DL) has received much attention in accelerated MRI, recent studies suggest small perturbations may lead to instabilities in DL-based reconstructions, leading to concern for their clinical application. However, these works focus on single-coil acquisitions, which is not practical. We investigate instabilities caused by small adversarial attacks for multi-coil acquisitions. Our results suggest that, parallel imaging and multi-coil CS exhibit considerable instabilities against small adversarial perturbations.

Abstract (translated)

URL

https://arxiv.org/abs/2102.13066

PDF

https://arxiv.org/pdf/2102.13066.pdf

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