Acıbadem Üniversitesi Sağlık Bilimleri Dergisi 2014 , Vol 5, Issue 1
Mri Assessment of Fetal Posterior Fossa
Ümit Aksoy Özcan2, Uğur Işık3, Mert Koçak1, Canan Erzen2
1Acıbadem Üniversitesi, Tıp Fakültesi, Istanbul, Türkiye
2Acıbadem Üniversitesi Tıp Fakültesi, Radyoloji Anabilim Dalı, Istanbul, Türkiye
3Acıbadem Üniversitesi Tıp Fakültesi, Çocuk Sağlığı ve Hastalıkları Anabilim Dalı,Pediatrik Nöroloji Bölümü, Istanbul, Türkiye
Purpose: Various studies have been published on the use of fetal magnetic resonance imaging (MRI) in the assessment of posterior fossa (PF) abnormalities. In this study, MRI results of fetal PF analysis in our center have been evaluated.

Methods and Material: The fetal MRG cases that were referred to our department have been retrieved by database search retrospectively. Among 308 fetal MRI cases that were examined at second or third the fetuses with PF anomalies were recruited.

Results: Of the 308 fetuses, 47 (mean gestational age 25.2 weeks) had PF abnormalities. The most common abnormalities were, mega cysterna magna (18), Arnold-Chiari II malformation (12), occipital encephalocele (6), Dandy–Walker malformation (5), arachnoid cyst (3) and others (3) respectively. Twenty-three fetuses were followed-up, 17 terminated, 7 fetuses were lost to follow-up.

Conclusion: The increased use of fetal MRI in the assessment of PF is important in consulting the clinician and the families by demonstrating the associated anomalies and detecting the rarely observed findings. Keywords : fetal, posterior fossa, magnetic resonance imaging, cerebellum