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An axial T1-weighted gradient-echo breath-hold acquisition of the fetal brain (A) and a motion-resistant axial T1-weighted free-breathing SNAPIR (Snapshot Inversion Recovery) acquisition of the same fetal patient acquired at 34 weeks' gestation at 1.5T. (B) Sections were anatomically matched for comparison. Depiction of anatomic structures (cerebral cortex, ventricular system) is improved with the optimized SNAPIR acquisition compared with the breath-hold protocol.
