PT - JOURNAL ARTICLE AU - U.D. Nagaraj AU - K.S. Bierbrauer AU - C.B. Stevenson AU - J.L. Peiro AU - F.Y. Lim AU - B. Zhang AU - B.M. Kline-Fath TI - Spinal Imaging Findings of Open Spinal Dysraphisms on Fetal and Postnatal MRI AID - 10.3174/ajnr.A5760 DP - 2018 Oct 01 TA - American Journal of Neuroradiology PG - 1947--1952 VI - 39 IP - 10 4099 - http://www.ajnr.org/content/39/10/1947.short 4100 - http://www.ajnr.org/content/39/10/1947.full SO - Am. J. Neuroradiol.2018 Oct 01; 39 AB - BACKGROUND AND PURPOSE: Fetal MRI has become a valuable tool in the evaluation of open spinal dysraphisms making studies comparing prenatal and postnatal MRI findings increasingly important. Our aim was to determine the accuracy of predicting the level of the spinal dysraphic defect of open spinal dysraphisms on fetal MR imaging and to report additional findings observed when comparing fetal and postnatal MR imaging of the spine in this population.MATERIALS AND METHODS: A single-center retrospective analysis was performed of fetal MRIs with open spinal dysraphisms from 2004 through 2016 with available diagnostic postnatal spine MR imaging. Images were reviewed by 2 board-certified fellowship-trained pediatric neuroradiologists. Corresponding clinical/operative reports were reviewed.RESULTS: One hundred nineteen fetal MRIs of open spinal dysraphisms were included. The level of the osseous defect between fetal and postnatal MR imaging was concordant in 42.9% (51/119) of cases and was 1 level different in 39% (47/119) of cases. On postnatal MR imaging, type II split cord malformation was seen in 8.4% (10/119) of cases, with only 50% (5/10) of these cases identified prospectively on fetal MR imaging. Syrinx was noted in 3% (4/119) of prenatal studies, all cervical, all confirmed on postnatal MR imaging.CONCLUSIONS: Fetal MR imaging is accurate in detecting the level of the spinal dysraphic defect, which has an impact on prenatal counseling, neurologic outcomes, and eligibility for fetal surgery. In addition, fetal MR imaging is limited in its ability to detect split cord malformations in patients with open spinal dysraphisms. Although rare, fetal MR imaging has a high specificity for detection of cervical spinal cord syrinx.OSDopen spinal dysraphism