A–C, Case 3: MR imaging, MRV, and conventional venography at different points of time. A–C, Case 3: MR imaging, MRV, and conventional venography at different.

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Presentation transcript:

A–C, Case 3: MR imaging, MRV, and conventional venography at different points of time. A–C, Case 3: MR imaging, MRV, and conventional venography at different points of time. CSF pressure 30 cm H2O (A); after CSF diversion, pressure of 11 cm H2O (B); and 7 days later (C). Fat-saturated T2-weighted turbo spin-echo inversion-recovery images in the coronal plane (TR/TE, 2650/180; Sl, 3 mm) (i), showing widening of the optic sheathes in A and C (arrows) and partially empty sella in A (ii) and C (ii). MIP of MRV in oblique anteroposterior views demonstrating narrowing of the RTS (iii) and the LTS (iv) (arrows) as well as in the straight sinus (arrowheads). T2-weighted turbo spin-echo images in the axial plane at the level of the straight sinus (arrows) and superior sagittal sinus (arrowheads, v), both being compressed in C. T2-weighted axial images showing normal ventricle size (vi). Conventional venography with the catheter placed in the RTS close to the torcular herophili was performed after CSF diversion (pressure of 11 cm H2O). B vii, Anteroposterior view shows bilateral low-grade TS stenoses. B viii, Lateral tilted view shows intravenous pressure monitoring in the RTS at different locations (arrows, pressure in centimeters H2O). A. Rohr et al. AJNR Am J Neuroradiol 2007;28:656-659 ©2007 by American Society of Neuroradiology