Abstract With the development of MRI technology, especially the wide application of fast magnetic resonance spectroscopic imaging, fetal 3D volumetric MRI has become an emerging technology for prenatal diagnosis. It is more accurate, more intuitive to observe fetal development, tridimensional structure, mutual relations, together with strong third dimension, large visual field and arbitrary angle, which is gradually applied in various fetal systems in order to make up the deficiency of 2D MRI. In recent years, 3D MRI has been used combined with computer(semi) automatic segmentation technology for volumetric measurement of fetal structures in an attempt to obtain a more detailed image of fetus in a non-invasive way. The developing fetus has also been reconstructed in 3D model, which plays an important role in evaluating normal anatomy, physiological changes and congenital malformations of fetal systems.
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