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Abstract #2579

DTI and NODDI assessment of posterior optic pathway function in sellar and parasellar tumor patients

Eun-Jung Choi1, Koung Mi Kang2, Woojin Jung1, Jongho Lee1, Seung Hong Choi2, and Yong Hwy Kim3
1Department of Electrical and Computer Engineering, Seoul National University, Seoul, Korea, Republic of, 2Department of Radiology, Seoul National University Hospital, Seoul, Korea, Republic of, 3Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea, Republic of

We investigated the impairment in the optic radiations affected by the anterior visual pathway compression using the diffusion tensor imaging (DTI), and neurite orientation dispersion and density imaging (NODDI). The results were correlated with the visual field impairment score (VFIS), which assesses the function of posterior visual pathway. The DTI and NODDI parameters in the optic radiations were significantly correlated with postoperative visual field improvement as well as preoperative visual field impairment in patients with the compression of optic chiasm. The study demonstrated the anterior visual pathway compression influences the visual field defect of the posterior visual pathway.

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