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Comparison of 2D time-of-flight MR venograms and 3D contrast-enhanced MPRAGE images of a 37-year-old woman with postpartum dural sinus thrombosis.A, 2D.

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Presentation on theme: "Comparison of 2D time-of-flight MR venograms and 3D contrast-enhanced MPRAGE images of a 37-year-old woman with postpartum dural sinus thrombosis.A, 2D."— Presentation transcript:

1 Comparison of 2D time-of-flight MR venograms and 3D contrast-enhanced MPRAGE images of a 37-year-old woman with postpartum dural sinus thrombosis.A, 2D time-of-flight maximum intensity projection MR venogram shows lack of flow-related enhancement in superio... Comparison of 2D time-of-flight MR venograms and 3D contrast-enhanced MPRAGE images of a 37-year-old woman with postpartum dural sinus thrombosis.A, 2D time-of-flight maximum intensity projection MR venogram shows lack of flow-related enhancement in superior sagittal sinus (arrows) and straight sinus (arrowheads). Note that by using this technique, the thrombosis is inferred by absence of a finding (ie, lack of flow-related enhancement) rather than by direct visualization of the thrombus.B, Sagittal reconstruction image obtained from a 3D contrast-enhanced MPRAGE image directly shows thrombus in the straight sinus and superior sagittal sinus (large arrows). The thrombus is also seen to extend into the adjacent vein of Galen (small arrows), have irregular margins, and produce irregular contrast enhancement of the inferior sagittal sinus (arrowheads), which were findings that were not seen in cases showing arachnoid granulations. Luxia Liang et al. AJNR Am J Neuroradiol 2002;23: ©2002 by American Society of Neuroradiology

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