Multisection CT Venography of the Dural Sinuses and Cerebral Veins by Using Matched Mask Bone Elimination
Charles B. L. M. Majoiea,
Marcel van Stratenb,
Henk W. Venemaa,b and
Gerard J. den Heetena
a Department of Radiology, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
b Department of Medical Physics, Academic Medical Center, University of Amsterdam, Amsterdam, the Netherlands
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FIG 1. CT scan of a 45-year-old woman with clinical suspicion of dural sinus thrombosis.
Lateral (A), anteroposterior (B), caudocranial (C), and oblique sagittal (D) MIP of CTA data set after MMBE. The projections demonstrate normal appearance of the superior sagittal sinus (arrowheads), the transverse sinuses (arrows), the deep venous system, and the superficial cortical veins without any overlying bone structures.
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FIG 2. CT scan of a 27-year-old man with clinical suspicion of dural sinus thrombosis.
Lateral (A), anteroposterior (B), caudocranial (C), and oblique sagittal (D) MIP of CTA data set after MMBE demonstrates complete bone removal and occlusion of the superior sagittal sinus (arrowheads) and both transverse sinuses (arrows). Note some overprojecting enhancement of the transverse sinus walls. The superficial cortical veins and deep venous system are patent.
Axial contrast-enhanced 1-mm sections demonstrate filling defects in the superior sagittal sinus (E, arrowhead) and both transverse sinuses (F, arrows).
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