par Avni, Efraim ;Massez, Anne ;Cassart, Marie
Référence Imagerie de la femme, 19, 1, page (13-20)
Publication Publié, 2009-02
Article révisé par les pairs
Résumé : Fetal MRI use has accelerated in the past few years because technological developments have allowed faster sequences, making maternal sedation unnecessary. A variety of sequences is used (T1- and T2-weighted, gradient echo, diffusion) and contributes to optimizing fetal assessment. The technique should only be used as a complement to obstetrical ultrasound conducted by experienced operators. There are a number of highly varied indications for MRI. In the brain, the technique is a useful completion to ultrasound when studying fetal gyration as well as ischemic and hemorrhagic lesions. It can detail anomalies of the corpus callosum and the cerebellum. In the chest, MRI provides a significant contribution in calculating the pulmonary residual volume in both diaphragmatic hernias and bronchopulmonary malformations. In its abdominal applications, MRI can specify the extension of peritoneal and retroperitoneal tumors and locate intestinal obstruction. In cases of complex nephrourological problems, the technique is required to define the condition of the renal parenchyma and the urinary tract. © 2009 Publié par Elsevier Masson SAS.