%0 Case Reports %T MRI-induced migration of a foreign body into the spinal canal: are present guidelines safe? %A Shaheen F %A Singh M %A Nazir P %J AJR Am J Roentgenol %V 191 %N 2 %D Aug 2008 %M 18647890 %F 6.582 %R 10.2214/AJR.07.3734 %X