Objectives: To determine the safety and efficacy of Sevoflurane anaesthesia with a supraglottic airway device for MRI. Study Design: Prospective longitudinal study. Place and Duration of Study: Department of Anaesthesiology, of Pak Emirates Military Hospital, Rawalpindi Pakistan from Jul to Dec 2019. Methodology: A sample size of 152 patients were calculated, including both genders from birth to 12 years. After applying inclusion and exclusion criteria, patients were chosen to undergo inhalational anaesthesia with Sevoflurane, including supraglottic airway device (SAD) insertion. After MRI, SAD was removed upon awakening and patients were shifted to the post-anaesthesia care unit (PACU) for further monitoring. Results: The mean age of patients was 4.07±2.312 years. Out of 152 patients, ninety (60%) were males, and sixty patients (40%) were females. Hypoxemia was seen in 1.3% cases, laryngospasm in 1.3%, and apnoea in 8% and coughing in 5% patients. There were no any other complications. Conclusion: The study concluded that Sevoflurane anaesthesia with SAD is a safe and reliable technique for artefact-free MRI of paediatric patients.