{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,28]],"date-time":"2025-10-28T04:47:45Z","timestamp":1761626865334,"version":"build-2065373602"},"reference-count":15,"publisher":"Bentham Science Publishers Ltd.","issue":"1","content-domain":{"domain":["openophthalmologyjournal.com","benthamopen.com"],"crossmark-restriction":true},"short-container-title":["TOOPHTJ"],"published-print":{"date-parts":[[2007,7,6]]},"abstract":"<jats:p>We have evaluated the signal intensity of magnetic resonance (MR) images of the optic nerve quantitatively in 25 patients with unilateral acute optic neuritis (ON). MR imaging was performed with a 1.5 Tesla unit before treatment within 2 weeks after the onset of ON. Four coronal fat-suppressed T2-weighted images were obtained at 5, 10, 15, and 20 mm behind the eye. The ratio of the signal intensity of the MR images from the optic nerve to that of the white matter of the frontal lobe was calculated and we compared the signal intensity ratio of the affected eyes to the fellow healthy eyes. For statistical analysis paired t-test was used. At all 4 sections, the mean signal intensity ratio of the affected eyes is statistically significant higher than fellow eyes. The 11 patients showed optic disc swelling in the affected eyes and in all these 11 eyes had a higher signal intensity at 5 mm behind the eye compared with the fellow eye. From our present results, we cannot refer to the sensitivity of our method, because we did not use our present methods to other diseases. But with this method we think inter-image and inter-observer variability must reduce. Further studies are required about the sensitivity and the relation between the pathological condition of optic nerve and the signal intensity ratio.<\/jats:p>","DOI":"10.2174\/1874364100701010001","type":"journal-article","created":{"date-parts":[[2007,12,19]],"date-time":"2007-12-19T07:02:15Z","timestamp":1198047735000},"page":"1-3","update-policy":"https:\/\/doi.org\/10.2174\/crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["Quantitative Evaluation of Signal Intensity of Magnetic Resonance Images in Optic Neuritis"],"prefix":"10.2174","volume":"1","author":[{"given":"Tadao","family":"Hanawa","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Atsushi","family":"Mizota","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"965","reference":[{"key":"refR1","doi-asserted-by":"crossref","first-page":"238","DOI":"10.1007\/BF00451760","volume":"29","author":"Johnson G","year":"1987","unstructured":"Johnson G, Miller DH, MacManus D, et al. \n                    STIR sequences in NMR imaging of the optic nerve \n                    Neuroradiology  \n                    1987; \n                    29\n                    : 238-45.","journal-title":"Neuroradiology"},{"key":"refR2","doi-asserted-by":"crossref","first-page":"629","DOI":"10.1177\/028418518802900602","volume":"29","author":"Larsson HB","year":"1988","unstructured":"Larsson HB, Thomsen C, Frederiksen J, Henriksen O, Olesen J. \n                    Chemical shift selective magnetic resonance imaging of the optic nerve in patients with acute optic neuritis \n                    Acta Radiologica  \n                    1988; \n                    29\n                    : 629-32.","journal-title":"Acta Radiologica"},{"key":"refR3","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1212\/WNL.38.2.175","volume":"38","author":"Miller DH","year":"1988","unstructured":"Miller DH, Newton MR, van der Poel JC, et al. \n                    Magnetic resonance imaging of the optic nerve in optic neuritis \n                    Neurology  \n                    1988; \n                    38\n                    : 175-9.","journal-title":"Neurology"},{"key":"refR4","doi-asserted-by":"crossref","first-page":"713","DOI":"10.1016\/S0161-6420(92)31892-5","volume":"99","author":"Guy J","year":"1992","unstructured":"Guy J, Mao J, Bidgood WD, Mancuso A, Quisling RG. \n                    Enhancement and demyelination of the intraorbital optic nerve. 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