Abstract #1351

Different distribution patterns of blood flow velocity in venous stenosis segment in idiopathic intracranial hypertension using 7T 4D flow MRI

Xue Zhang^1,2, Xun Pei^1,2, Qingle Kong³, Yuan Li⁴, Dapeng Mo⁵, and Binbin Sui¹

¹Tiantan Neuroimaging Center of Excellence, China National Clinical Research Center for Neurological Diseases, Beijing Tiantan Hospital, Capital Medical University, Beijing, China, ²Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China, ³Department of Radiology, University of Southern California, Los Angeles, CA, United States, ⁴MR Research Collaboration Team, Siemens Healthineers, Beijing, China, ⁵Interventional Neuroradiology Center, Beijing TianTan Hospital, Capital Medical University, Beijing, China

Synopsis

Keywords: Blood Vessels, Velocity & Flow

Motivation: The distribution pattern of blood flow velocity in venous sinus stenosis is worth exploring, and its screening value for venous stenting is unknown yet.

Goal(s): To explore velocity distribution pattern in idiopathic intracranial hypertension (IIH) patients with venous stenosis and its relationships with clinical characteristics.

Approach: Fifteen IIH patients with venous stenosis were scanned through 4D flow MRI with 7.0T scanner, and data was processed for the velocity distribution patterns.

Results: Steady, ascending, and descending distribution patterns were identified. TPG, CSF pressure and stenosis rate were significantly different among three patterns, with significantly higher value in ascending velocity group.

Impact: As a noninvasive imaging technique, 4D flow MRI may provide some support from a hemodynamic perspective for screening IIH patients who would benefit from venous manometry and venous stenting.

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