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Case Reports
. 1992 Dec;185(3):904-7.
doi: 10.1148/radiology.185.3.1438784.

Radiation-induced optic neuropathy: correlation of MR imaging and radiation dosimetry

W C Young  1 , A F Thornton, S S Gebarski, W T Cornblath
Affiliations
Case Reports

Radiation-induced optic neuropathy: correlation of MR imaging and radiation dosimetry

W C Young et al. Radiology. 1992 Dec.

Abstract

The authors performed topographic correlation of dosimetric measurements with contrast medium-enhanced magnetic resonance (MR) imaging signal aberration in two cases of radiation optic neuropathy. The region of pathologic contrast enhancement in the optic nerve and chiasm had received 55-62 Gy, which supports the theory that the risk of injury to the optic nerve and chiasm increases steeply with radiation doses above the tolerance level of 50-55 Gy.

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