RT Journal Article SR Electronic T1 Radiation Dose to the Lens Using Different Temporal Bone CT Scanning Protocols JF American Journal of Neuroradiology JO Am. J. Neuroradiol. FD American Society of Neuroradiology DO 10.3174/ajnr.A1807 A1 Y. Niu A1 Z. Wang A1 Y. Liu A1 Z. Liu A1 V. Yao YR 2009 UL http://www.ajnr.org/content/early/2009/12/03/ajnr.A1807.abstract AB