Super-resolution of sodium images from simultaneous ¹ H MRF/²³ Na MRI acquisition.

ABSTRACT: In this work, we introduce a super-resolution method that generates a high-resolution (HR) sodium (²³ Na) image from simultaneously acquired low-resolution (LR) ²³ Na density-weighted MRI and HR proton density, T₁ , and T₂ maps from proton (¹ H) MR fingerprinting in the brain at 7 T. The core of our method is a partial least squares regression between the HR (¹ H) images and the LR (²³ Na) image. An iterative loop and deconvolution with the point spread function of each acquired image were included in the algorithm to generate a final HR ²³ Na image without losing features from the LR ²³ Na image. The method was applied to simultaneously acquired HR proton and LR sodium data with in-plane res

SUBMITTER: Rodriguez GG 

PROVIDER: S-EPMC10527031 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature