Imaging Dural Sinuses by TIME-OF-FLIGHT MRV

 Time-of-flight MRV-sagittal sinus

• Sagittal T1 SE-weighted sequence
• Coronal mult-iecho spin echo (This is a dual echo turbo spin echo sequence that acquires both proton density and T2-weighted images simultaneously. In this study, look for normal flow voids in the venous sinuses. These flow voids may be compromised by signal from blood products on T2-weighted images. There tend to be fewer of these artifacts on the proton density weighted images. The proton density weighted images come as a bonus with the T2-weighted images without any additional expenditure of time and they are useful in this situation. )

• Spin echo coronal with flow compensation ( Run a spin echo coronal scan according to the parameters Siemens calls this sequence gradient motion rephasing (GMR). It is very helpful in reducing flow related artifact that may hinder evaluation of dural sinuses, particularly in the posterior fossa. This sequence also accentuates the visibility of vessels, especially rapidly flowing blood. This is useful when the vein is narrow or there is a thin rim of flow around the periphery of a thrombus. )
• 2D TOF Venogram

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