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Abstract #3516

Hyperintensity in the Cerebral Venous Systems on 3D TOF MRA: Better Understanding of the Mechanism Using Dynamic Head and Neck MRA

Eung Yeop Kim 1 and Jun-Young Chung 2,3

1 Radiology, Gachon University Gil Medical Center, Incheon, ., Korea, 2 Biomedical Engineering, College of Health Sciences, Gachon University, Seongnam, ., Korea, 3 Neuroscience Research Institute, Gachon University, Incheon, ., Korea

The cerebral venous sinuses may normally show hyperintensity on cerebral TOF MRA, which oftentimes mimics pathologic conditions such as arteriovenous fistula. Using the source images of dynamic head and neck MRA, we demonstrated that the relative size of the inferior petrosal sinus to the ipsilateral anterior/lateral condylar veins is the only factor for visualization of hyperintensity in the inferior petrosal sinus on both sides on cerebral TOF MRA. Extrinsic compression of left internal jugular vein may be attributable to the presence of hyperintensity in the left sigmoid sinus on cerebral TOF MRA.

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