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Abstract #14260 Published in IGR 8-3
MR imaging of optic nerve; relationship between signal intensity of the optic nerve at MR imaging and degrees of optic disc excavation
Kurokawa H; Kimu S; Otsuji T; Hatano H; Miyashiro M; Ikeda K; Omura N; Sawada H; Ogata NJapanese Journal of Clinical Radiology 2006; 51: 515-519
Retrospective evaluation was made in forty-one patients (79 eyes) with normal tension glaucoma (NTG) studied by STIR MR images. The severity of optic disc cupping (C/D ratio) was compared with the frequency of abnormal high signal intensity in STIR MR images. No high signal intensity in the optic nerve was observed in any of 15 eyes with a C/D ratio of 0.5 or less. STIR MR images revealed that the frequency of the appearance of high signal intensity in the optic nerve increased with aggravation of the optic disc cupping. Approximately 10 (77%) of 13 eyes with a C/D ratio of 0.9 or over exhibited a high signal intensity in the optic nerve. These results indicate that MRI can potentially contribute to the detection of NTG not associated with clinical evidence. LA: Japanese
Dr. H. Kurokawa, Department of Radiology, Saiseikai Izuo Hospital, Japan
Classification:
6.9.5 Other (Part of: 6 Clinical examination methods > 6.9 Computerized image analysis)