FillintheBlanks科学松鼠会.doc

FillintheBlanks科学松鼠会.docFill in the Blanks: Using Math to Turn Lo-Res Datasets Into Hi-Res Samples
填补空一利用数学将低分辨率的数据集变成高分辨率的样本
In the early spring of 2009, a team of doctors at the Lucile Packard Children^ Hospital at Stanford University lifted a 2-year-old into an MRI scanner. The boy, whom Fll call Bryce, looked tiny and forlorn inside the cavernous metal device. The stuffed monkey dangling from the entrance to the scanner did little to cheer up the scene. Bryce couldn't see it, in any case; he was under general anesthesia, with a tube snaking from his throat to a ventilator beside the scanner. Ten months earlier, Bryce had received a portion of a donor\ liver to replace his own failing organ. For a while, he did well. But his latest lab tests were alarming. Something was going wrong — there was a chance that one or both of the liver's bile ducts were blocked.
2009年早春， 扫描仪。这个将被我称之为名叫布赖斯的男孩身处巨洞般的金属仪器中，看上去是那么弱小 丽无助。工#就算是挂在扫描仪的入口处的填充玩具猴也不能让一切 看起来变得更好点但是这似乎并不能使情势娈好”布赖斯不可能看见无论如何也看不到. 它，因为他被施以全身麻醉，一根管子蜿蜒连通他的喉管和扫描仪旁的呼吸机。十个月前， 布赖斯接受了肝脏移植术,他的已坏死的组织被来自捐献者的部分肝脏所取代了他自己的已 坏死的肝脏。暂时L他的康复情况一度不错良好。但是，最近的实验室测试结果令人担忧F, 他的身体机能出现了问题一有可能其中一条或者全部的两条胆管都被堵住了。
Shreyas Vasanawala, a pediatric radiologist at Packard, didn't know for sure what was wrong, and hoped the MRI would reveal the answe匚 Vasanawala needed a phenomenally hi-res scan, but if he was going to get it, his young patient wo