Response: Full sequence spine MRIs are routinely performed as screening studies in pediatric patients with idiopathic scoliosis; however, they may take up to 60 minutes or require sedation. Limited sequence or "FAST" spine MRI scans require less time and a less frequent need for sedation, but they may decrease diagnostic accuracy. Limited sequence MRI scans perform fewer imaging sequences compared to full sequence MRI scans. The purpose of this study is to investigate the feasibility and safety of limited sequence MRI scans as a screening tool in patients with idiopathic scoliosis. The learning curve is not steep to become comfortable in evaluating limited sequence spine MRI images or reports.