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AJNR - American Journal of Neuroradiology

Published ahead of print on October 14, 2008
doi: 10.3174/ajnr.A1327

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Comparison of Eye Lens Dose on Neuroimaging Protocols between 16- and 64-Section Multidetector CT: Achieving the Lowest Possible Dose

J.S.P. Tan^a, K.-L. Tan^a, J.C.L. Lee^c, C.-M. Wan^a, J.-L. Leong^b and L.-L. Chan^a

^a Department of Diagnostic Radiology, Singapore General Hospital, Singapore
^b Department of Otolaryngology, Singapore General Hospital, Singapore
^c Department of Radiation Oncology, National Cancer Centre, Singapore

View larger version (46K): [in this window] [in a new window]   Fig 1. Graphic comparison of mean eye lens dose between 16-section and 64-section MDCT for the neuroimaging CT protocols studied.

View larger version (59K): [in this window] [in a new window]   Fig 2. A, Photograph of a volunteer; B, sagittal scout image with section lines of a patient in the chin tuck position during a CT brain scanning on a 64-section MDCT to remove the eyes from the radiation beam. C, Sagittal scout image with section lines for a CT brain scanning in a tilted axial mode on the 16-section MDCT for comparison.