Fig. 4
The patient presented with a headache and persistent deterioration of visual function, despite medical treatment for 8 months. A and B : The angiogram with venous phase images shows severe stenosis of the right transverse sinus before stenting from both the anterior-posterior and oblique views, the transtenotic mean pressure gradient was 14mmHg. Note that there is stenosis of both transverse sinuses. A1 and B1: Angiogram with venous phase images demonstrating right transverse sinus post stenting from anterior-posterior view and oblique view. Note obvious change in flow dynamics with 2mmHg of transtenotic mean pressure gradient. D: Intravascular ultrasound (IVUS) demonstrating echogenic material with a significantly decreased diameter of the right transverse sinus. (a) distal reference segment of tight stenosis on IVUS. (b) tight stenosis on IVUS. (c) proximal reference segment of tight stenosis on IVUS. E. a1. distal reference segment on IVUS post-stenting. b1. IVUS post-stent deployment demonstrated increased cross-sectional area (CSA) at the narrowest site of the right transverse sinus prior to stenting. c1. proximal reference segment on IVUS post-stenting.
