Algorithms 1 Anatomy visualization Constrained optimization 1 Female 1 Fetal MRI 1 Gradient methods 1 Humans 1 Injective map 1 Magnetic Resonance Imaging 1 Magnetic resonance imaging 1 Mapping 1 Mesh generation 1 Mesh parameterization 1 Parameterization 1 Parameterizing 1 Pelvis 1 Placenta 1 Pregnancy 1 Shape 1 Visualization 1 Volumetric mesh 1 Volumetric mesh parameterization 1 Volumetric parameterization 1 algorithm 1 article 1 controlled study 1 diagnostic imaging 1 ex vivo study 1 female 1 fetal MRI 1