Alaa Tareq Sheet^1,, Taimaa Tawfiq M. Said², Bilal Natiq Nuaman³

Background: Delay milestone is a common clinical problem in pediatrics, it present during infancy as developmental delay. Myelination is a dynamic procedure that starts with myelination of the most primary bits of the cerebrum. The study was performed in the MRI unit of AL-Emamain AL-Kadhimain medical city and, was conducted on 47 developmentally delayed children, 27 males and 20 females, who visited the pediatric outpatient unit in the period from October 2017 to June 2018, No etiological diagnosis could be made following clinical examination and primary investigations in all patients who enrolled in this study. Objective: To study MRI findings and myelination milestones in some children with delay development. Results: 21 patients had abnormal MR findings and 26 patients were with normal MRI examination where no abnormal findings could be noticed. According to MRI finding, we have been classified MR finding into various causes metabolic /degenerative 4.3 %, congenital and developmental 6.4 %, traumatic/neurovascular10.6%, non specific 23.4%, normal 59.6 %. Conclusion: MRI should be done to child with global developmental delay where no obvious etiology can be found after examination and proper investigations.