Abstract : MRI denoising is a classical preprocessing step which aims at reducing the noise naturally present in MR images. In this paper, we present a new method for MRI denoising that combines recent advances in deep learning with classical approaches for noise reduction. Specifically, the proposed method follows a two-stage strategy. The first stage is based on an overcomplete patch-based convolutional neural network that blindly removes the noise without estimation of local noise level present in the images. The second stage uses this filtered image as a guide image within a rotationally invariant non-local means filter. The proposed approach has been compared with related state-of-the-art methods and showed competitive results in all the studied cases.
https://hal.archives-ouvertes.fr/hal-01918437 Contributor : Pierrick CoupéConnect in order to contact the contributor Submitted on : Friday, April 15, 2022 - 12:23:27 PM Last modification on : Thursday, April 21, 2022 - 2:13:31 PM
Jose Manjon, Pierrick Coupé. MRI Denoising Using Deep Learning. International Workshop on Patch-based Techniques in Medical Imaging (MICCAI), Sep 2018, Granada, Spain. pp.12 - 19, ⟨10.1007/978-3-030-00500-9_2⟩. ⟨hal-01918437⟩