More Reliable Noninvasive Visualization of the Cerebral Veins and Dural Sinuses: Comparison of Three MR Angiographic Techniques

Abstract

Three-dimensional FLASH MR angiography depicts some venous structures better than do TOF and phase-contrast MR angiographic examinations. The depiction of other veins is the same with 3D FLASH and TOF sequences.

3T High-Spatial-Resolution Contrast-Enhanced MR Angiography of the Intracranial Venous System with Parallel Imaging

“…In contrast to the results of Kirchhof et al, 1 who used imaging at 1.5T, in our study, in which imaging at 3T with a higher spatial resolution of CE MRV was used, most of the defined different venous structures were visualized more effectively by CE MRV compared with TOF MRV. The section thickness of CE MRV in our study is lower than previously reported in other studies with use of 1.5T [1][2][3][4] or 3T 5 imaging. Another crucial aspect of CE MRV is the synchronization of the acquisition with the arrival of the contrast agent.…”

“…ontrast-enhanced (CE) MR venography (MRV) with 1.5T MR imaging has proved to be superior to time-of-flight (TOF) [1][2][3] as well as phase-contrast 1 MRV to visualize the intracranial venous system. Because small intracranial vein thrombosis is often associated with venous infarction or hemorrhage, MRV requires spatial resolution in submillimeter dimension.…”

Variations in the cerebral venous anatomy and pitfalls in the diagnosis of cerebral venous sinus thrombosis: Low field MR experience

“…[13] It can he effectively used to avoid problems of magnetization saturation that occur in 3D TOF studies. As discussed by Kirchhof et al, [14] PC MRA can yield additional information about blood flow directions and absolute flow velocities. Inappropriate settings can lead to aliasing effects in which flow directionality is incorrectly displayed or reducing the sensitivity.…”

Preoperative Evaluation of the Petrosal Vein With Contrast-Enhanced PRESTO Imaging in Petroclival Meningiomas to Establish Surgical Strategy

“…24) However, visualization of the petrosal veins has been quite difficult even using MR venography and 3D-CT venography in patients with large petroclival meningiomas, which severely compress or otherwise involve the petrosal veins. 1,9,30) Recently, MR venography based on blood oxygenation level- 41 transpetrosal visible visible visible visible visible none 2 40/F 27 retrosigmoid visible visible visible visible visible none 3 35/F 15 transpetrosal visible visible visible visible visible none 4 52/F 16 transpetrosal visible visible visible not visible visible none 5 36/F 28 retrosigmoid visible not visible visible visible visible none 6 54/F 41 transpetrosal visible visible not visible not visi...…”