The optic radiation (OR) is a visual neural fiber pathway for the transfer of visual information from the lateral geniculate body of the thalamus to the primary visual cortex. To demonstrate the recovery of an OR injury, quantification and visualization of changes to the injured OR are necessary. Diffusion tensor imaging (DTI) allows determination of the state of an OR by assessing the obtained DTI parameters. In particular, diffusion tensor tractography (DTT), which is derived from DTI data, allows three-dimensional visualization of the OR. Thus, recovery of an injured OR can be demonstrated by examining changes in DTI parameters and/or configuration on follow-up DTI scans or via DTT of the injured OR. Herein, we review nine DTI-based studies that demonstrated recovery of OR injuries. The results reported in these studies suggest that an OR injury has a potential for recovery. Moreover, the results of these studies can form a basis for elucidating the recovery mechanisms of injured OR. These studies have suggested two recovery mechanisms for OR injury: recovery via the original OR pathway or via the transcallosal fibers of the corpus callosum. However, only nine studies on this topic have been conducted to date and six of those nine studies were case reports. Therefore, further studies involving larger numbers of subjects and reporting precise evaluations of changes in OR injury during recovery are warranted.

中文翻译：

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弥散张量成像研究损伤光辐射的恢复：Minireview。

视辐射（OR）是一种视觉神经纤维途径，用于将视觉信息从丘脑外侧膝状体转移到初级视觉皮层。为了证明OR损伤的恢复，必须对损伤的OR的变化进行量化和可视化。扩散张量成像（DTI）可以通过评估获得的DTI参数来确定OR状态。尤其是，从DTI数据派生的扩散张量束测图（DTT）可以对OR进行三维可视化。因此，可以通过在后续DTI扫描中检查DTI参数和/或配置的变化或通过受伤的OR的DTT来证明受伤的OR的恢复。本文中，我们回顾了九项基于DTI的研究，这些研究证明了OR损伤的恢复。这些研究报告的结果表明，OR损伤具有恢复的潜力。而且，这些研究的结果可以为阐明受伤的OR的恢复机制提供基础。这些研究提出了两种针对OR损伤的恢复机制：通过原始OR途径或通过trans体的经call肌恢复。但是，迄今为止，仅就该主题进行了九项研究，而这九项研究中有六项是病例报告。因此，有必要进行涉及大量受试者的进一步研究，并报告对恢复期间OR损伤变化的精确评估。通过原始的OR途径或通过via体的经愈伤组织纤维进行恢复。但是，迄今为止，仅就该主题进行了九项研究，而这九项研究中有六项是病例报告。因此，有必要进行涉及大量受试者的进一步研究，并报告对恢复期间OR损伤变化的精确评估。通过原始的OR途径或通过via体的经愈伤组织纤维进行恢复。但是，迄今为止，仅就该主题进行了九项研究，而这九项研究中有六项是病例报告。因此，有必要进行涉及大量受试者的进一步研究，并报告对恢复期间OR损伤变化的精确评估。