Diffusion Tensor Imaging Findings of Optic Radiation in Patients with Putaminal Hemorrhage

Title
Diffusion Tensor Imaging Findings of Optic Radiation in Patients with Putaminal Hemorrhage
Author(s)
장성호서정표최병연장철훈정영진변우목김성호권용현[권용현]
Keywords
FUNCTIONAL MAGNETIC-RESONANCE; VISUAL-FIELD DEFECTS; HOMONYMOUS HEMIANOPIA; STROKE; TRACTOGRAPHY; TRACKING; POPULATION; PROGNOSIS; BRAIN
Issue Date
201301
Publisher
KARGER
Citation
EUROPEAN NEUROLOGY, v.69, no.4, pp.236 - 241
Abstract
Objectives: Little is known about optic radiation (OR) injury in intracerebral hemorrhage (ICH). We attempted to investigate OR injury in patients with ICH by diffusion tensor imaging (DTI). Methods: Forty-three consecutive patients with putaminal hemorrhage and 40 normal healthy control subjects were recruited. DTI data were acquired at the beginning of rehabilitation (average 34 days after onset). DTI-Studio software was used to reconstruct the OR. Fractional anisotropies (FA) and fiber numbers of the ORs were measured. FA values and fiber numbers of affected ORs were described as abnormal when they were more than 2.5 SD lower than those of normal controls. Results: Thirty (70%) of the 43 patients showed an OR abnormality in the affected hemisphere. In 13 (30%) patients, the affected OR was disrupted or nonreconstructable. On the other hand, of the 20 patients with preserved OR integrity, 14 (33%) had a low FA value and 3 (7%) a low FA and fiber number. The other 13 (30%) of the 43 patients had no abnormal OR findings. Conclusion: Seventy percent of patients showed any abnormality of OR in the affected hemisphere on DTI. This result suggests that patients with putaminal hemorrhage are at high risk of OR injury. Copyright (C) 2013 S. Karger AG, Basel
URI
http://hdl.handle.net/YU.REPOSITORY/26814http://dx.doi.org/10.1159/000345271
ISSN
0014-3022
Appears in Collections:
의과대학 > 재활의학교실 > Articles
의과대학 > 신경외과학교실 > Articles
의과대학 > 영상의학과학교실 > Articles
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