We welcome comments from PhDs, MDs, DVMs..  Your silence so far is deafening..

“..anesthesia is used with some nonsurgical procedures, too, such as to keep tots still during MRI scans – and Ross said that’s an area to try alternatives. For example, Duke has had parents or nurses crawl inside scanners to hold a child.
“Under 3 is certainly more challenging, but it’s doable for a lot of kids,” Ross said.” http://www.newsmax.com/Health/Health-News/anesthesia-children-brain-study/2015/02/26/id/626991/#ixzz3ZxiX1kWX