Taisa Davaus Gasparetto MD, Presenter: Nothing to Disclose

Heron Werner MD, Abstract Co-Author: Nothing to Disclose

Lorena Arrieta, Abstract Co-Author: Nothing to Disclose

Pedro Daltro MD, Abstract Co-Author: Nothing to Disclose

Romeu Cortes Domingues MD, Abstract Co-Author: Nothing to Disclose

The placenta serves as the organ providing oxygen and nutrition to the fetus. In cases of placenta pathologies, disturbances in the exchange may lead to intrauterine growth restriction, prematurity and intrauterine fetal death. Although ultrasound and Doppler flow sonography are the gold standard methods to evaluation of the placenta, MRI has become an important tool in the assessment of unclear diagnosis with ultrasound.

- Anatomy of the placenta (basal plate, placenta lobule, cotyledon) - Placenta maturation (Grannum-Classification in ultrasound and adaptation to MRI) - Calcification of the placenta - Placental shape - Placental shape abnormalities- circunvalata, bilobata. - Pathologies of the placenta: septal cysts, infarction, trombi, placental lakes, retroplacental hematoma, chorangioma, molar pregnancy, placenta previa, abnormal plancetal invasion - Umbilical cord: single umbilical artery, hypercoiling umbilical cord, umbilical cord knots, umbilical cord cyst, velamentous cord insertion

Although US remains the method of choice for fetal evaluation, MRI plays an important role as imaging adjunct in the placenta evaluation, specially due to the large field of view and multiplanar capabilities.

Gasparetto, T, Werner, H, Arrieta, L, Daltro, P, Domingues, R, Placenta Evaluation: Normal and Abnormal Findings by Obstetric Ultrasound and Magnetic Resonance Imaging.  Radiological Society of North America 2013 Scientific Assembly and Annual Meeting, December 1 - December 6, 2013 ,Chicago IL. http://archive.rsna.org/2013/13027686.html