Deep Learning for Synthetic Postcontrast T1-Weighted MRI: A Systematic Review With Targeted Meta-Analysis of Brain Tumor Studies
BACKGROUND . Gadolinium-based contrast agents remain essential for MRI but carry risks. Deep learning (DL) methods have emerged as a potential approach for synthesizing postcontrast T1-weighted images from precontrast sequences alone. OBJECTIVE . The objective of the present study was to systematically review DL-based synthesis of postcontrast T1-weighted MRI, characterize model architectures and evaluation practices across subspecialties, and perform targeted meta-analysis where sufficient literature existed. E…
Systematic review and meta-analysis of 15 brain tumor studies found deep learning synthesis of postcontrast T1-weighted MRI from precontrast sequences alone is technically feasible with high whole-image similarity.
Clinical translation is limited by inconsistent evaluation, substantially lower performance on pathology-specific regions, and reliance on single-institution data with few reader studies or external validation.
Pooled performance estimates are descriptive only due to extreme heterogeneity and inconsistent metric computation, and most studies lacked external validation and reader studies.
Evidence
- Peer-reviewedAmerican Journal of Roentgenology2026-08-26
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Truvace Impact Record TRV-2026-0904, v1: “Deep Learning for Synthetic Postcontrast T1-Weighted MRI: A Systematic Review With Targeted Meta-Analysis of Brain Tumor Studies.” Truvace, 2026-08-27. /record/TRV-2026-0904 (accessed at citation time). sha256 9e75e4d20ccf787a…
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