Functional magnetic resonance imaging evaluation of visual cortex activation in patients with anterior visual pathway lesions.
The aim of this study was to examine the secondary visual cortex functional disorder in patients with glaucoma and large pituitary adenoma by functional magnetic resonance imaging, and to determine the correlation between visual field defect and primary visual cortex activation. Results showed that single eye stimulation resulted in bilateral visual cortex activation in patients with glaucoma or large pituitary adenoma. Compared with the normal control group, the extent and intensity of visual cortex activation was decreased after left and right eye stimulation, and functional magnetic resonance imaging revealed a correlation between visual field defects and visual cortex activation in patients with glaucoma and large pituitary adenoma. These functional magnetic resonance imaging data suggest that anterior optic pathway lesions can cause secondary functional disorder of the visual cortex, and that visual defects are correlated with visual cortex activation.
Department of Radiology, Qingdao Municipal Hospital, Qingdao 266071, Shandong Province, China.
Xiufeng
X
Song
Department of Radiology, Qingdao Municipal Hospital, Qingdao 266071, Shandong Province, China.
Guohua
G
Wang
Department of Radiology, Qingdao Municipal Hospital, Qingdao 266071, Shandong Province, China.
Tong
T
Zhang
Department of Radiology, Qingdao Municipal Hospital, Qingdao 266071, Shandong Province, China.
Lei
L
Feng
Department of Radiology, Qingdao Municipal Hospital, Qingdao 266071, Shandong Province, China.
Peng
P
An
Department of Radiology, Qingdao Municipal Hospital, Qingdao 266071, Shandong Province, China.
Yueli
Y
Zhu
anterior visual pathway; functional magnetic resonance imaging; glaucoma; pituitary adenoma; visual cortex