Author

Natascha Niessen

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Preprint Sep 2026

Highly accelerated 3D Cartesian MPnRAGE with implicit neural representation reconstruction

MPnRAGE enables multiple inversion contrast images in a single scan, allowing quantitative T1 mapping, tissue nulled contrasts, and standard MPRAGE synthesis. However, current 3D scan times remain clinically impractical, motivating accelerated 3D MPnRAGE. This work provides a highly accelerated Cartesian 3D MPnRAGE seq...

Natascha Niessen, A. Solana, Carolin M. Pirkl et al. · 0 citations

Preprint Aug 2026

CUPA-T2: Covariance-Aware Uncertainty Propagation and Alignment for T2 Mapping in Accelerated MRI

CUPA-T2* enables reconstruction uncertainty-aware T2* fitting and delivers voxel-wise uncertainty maps to support the interpretation of quantitative T2* estimates, while also revealing a trade-off with calibration (ECE) and selective prediction performance (AURC).

Gideon N. L. Rouwendaal, Natascha Niessen, H. Eichhorn et al. · 0 citations

Natascha Niessen

Highly accelerated 3D Cartesian MPnRAGE with implicit neural representation reconstruction

CUPA-T2*: Covariance-Aware Uncertainty Propagation and Alignment for T2* Mapping in Accelerated MRI

CUPA-T2: Covariance-Aware Uncertainty Propagation and Alignment for T2 Mapping in Accelerated MRI