MOSFET dosimetry for radiation dose assessment of bismuth shielding of the eye in children.
OBJECTIVE: The purpose of our study was to measure radiation dose to the orbit during pediatric cranial CT with and without bismuth shielding using a novel dosimetry system. Cranial CT was performed on a pediatric anthropomorphic phantom, with and without bismuth eye shields. A solid-state metal oxide semiconductor field effect transistor (MOSFET) dosimeter was used to obtain real-time dose measurements. CONCLUSION: Bismuth shielding reduced radiation dose to the eye by up to 42%; shield artifact fell outside the diagnostic area of interest.
Mukundan, S; Wang, PI; Frush, DP; Yoshizumi, T; Marcus, J; Kloeblen, E; Moore, M
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