Online Spatiotemporally Constrained Reconstruction for Real-Time Interactive MRI.

ABSTRACT:

Purpose

To develop a low-latency dynamic MRI reconstruction that provides better spatial and temporal fidelity than contemporary online reconstruction, for localization.

Methods

We utilize online spatiotemporally constrained reconstruction (STCR) using a computationally efficient augmented Lagrangian solution and a limited number of iterations that terminate before the acquisition of the next frame. Online STCR is evaluated in the setting of fetal cardiac localization at 0.55 T, and is compared with online view-sharing and offline compressed sensing, using edge sharpness metrics.

Results

Online STCR has the highest structural similarity index measure (SSIM) to offline STCR among the compared online reconstruction methods. Spatial edge sharpness improved by 13% ±$$ \pm

SUBMITTER: Le DH 

PROVIDER: S-EPMC12746365 | biostudies-literature | 2026 Mar

REPOSITORIES: biostudies-literature