transverse sinus stenosis

Transverse Sinus Stenosis Is the Most Sensitive MR Imaging Correlate of Idiopathic Intracranial Hypertension

Fellows’ Journal Club

MR imaging and MRV images from 63 patients with idiopathic intracranial hypertension and 96 controls were reviewed by using 3 independent procedures. MRV images were graded for the presence and degree of stenosis of the transverse sinus. Postgadolinium coronal T1-weighted sequences were evaluated independent of MRV. The dimensions of the proximal and distal transverse sinus were measured. Transverse sinus stenosis was identified bilaterally on MRV in 94% of patients with IIH and in 3% of controls. On coronal T1 postgadolinium MR images, transverse sinus stenosis was identified in 83% of patients with IIH and 7% of controls. The authors conclude that transverse sinus stenosis is the most useful and sensitive imaging indicator of this disease state.