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 Indian J Med Microbiol  
 

Figure 6 (A-C): Tract displacement. Left parietooccipital AVM. T2W axial image (A) shows a heterogeneous lesion (arrow) in the left parietooccipital region with flow voids. The FA map (B) shows anterolateral displacement of the arcuate fasciculus (curved arrow) and medial displacement of the optic radiation (straight arrow), also seen on the directionally encoded color map (C) (arrow), with no obvious infi ltration of these tracts. This patient had a right-sided visual fi eld defect pre-operatively. As the optic radiation was seen to be only displaced and not infi ltrated, the visual loss recovered following surgery, as predicted

Figure 6 (A-C): Tract displacement. Left parietooccipital AVM. T2W axial image (A) shows a heterogeneous lesion (arrow) in the left parietooccipital region with flow voids. The FA map (B) shows anterolateral displacement of the arcuate fasciculus (curved arrow) and medial displacement of the optic radiation (straight arrow), also seen on the directionally encoded color map (C) (arrow), with no obvious infi ltration of these tracts. This patient had a right-sided visual fi eld defect pre-operatively. As the optic radiation was seen to be only displaced and not infi ltrated, the visual loss recovered following surgery, as predicted