 After screening for contraindications to MRI examination patients will undergo a 20 minute MRI examination. MRI examinations will be performed with a 1.5 T superconductive system SIEMENS VISION, Erlangen, Germany or General Electric Twin, Milwaukee using a 4-8 element body phased-array coil andor body coil. The minimum rise time will be 600 microseconds for a 25 milliTesla preset gradient amplitude. The whole body specific absorption rate will be kept under 1.5 wattkilogram. Patients will be positioned supine with their feet entering the magnet bore first to minimize feelings of claustrophobia. A scout view will be obtained, and fetal images will be obtained with half Fourier single shot fast spin echo imaging imaging in the fetal sagittal, coronal, and axial planes echo spacing of 4.2 msec, echo time60 msec, echo train length72, 1 acquisition, 3-5 mm section thickness, 26 x 35 cm field of view, 128 x 256 acquisition matrix. The refocusing flip angle will be minimized to decrease the amount of radiofrequency power deposition. Fetal anomalies seen with MRI will be recorded prospectively with knowledge of the sonographic findings. 