© RSNA, 2008
Intracranial Arteriovenous Malformation: Time-resolved Contrast-enhanced MR Angiography with Combination of Parallel Imaging, Keyhole Acquisition, and k-Space Sampling Techniques at 1.5 T
Movie 1 (corresponds to Fig 1 and Fig 4b): AVM of the left parietal lobe in 16-year-old patient. MIP of time-resolved MR angiography (3.7/1.5, 15° flip angle) data reconstructed in the sagittal plane shows the passage of the contrast agent from the early arterial to the late venous phase. A plexiform nidus located in the left parietal lobe, supplied by branches deriving from the anterior cerebral artery, is displayed. Venous drainage occurs via a dilated cortical vein into the superior sagittal sinus.
Movie 2 (corresponds to Fig 1 and Fig 4b): AVM of the left parietal lobe in 16-year-old patient. Near-isotropic volume data allow image reconstruction in any projection. The volume acquired in the parenchymal phase of time-resolved MR angiography (3.7/1.5, 15° flip angle) is reconstructed every 1.5°.
Movie 3 (corresponds to Fig 2): Intermediate-size AVM (1–3 cm) of the left parietal lobe in a 31-year-old woman. Coronal reconstruction of time-resolved MR angiography (3.7/1.5, 15° flip angle) shows passage of the contrast agent.
Movie 4 (corresponds to Fig 2): Intermediate-size AVM (1–3 cm) of the left parietal lobe in a 31-year-old woman. MIP of the entire 3D volume acquired in the arterial phase is reconstructed every 1.5°.
Movie 5 (corresponds to Fig 3b): Small AVM (<1 cm) of the left temporal lobe in a 45-year-old patient. Sagittal reconstruction of time-resolved MR angiography (3.7/1.5, 15° flip angle) shows passage of the contrast agent.
Movie 6 (corresponds to Fig 3b): Small AVM (<1 cm) of the left temporal lobe in a 45-year-old patient. MIP of the entire 3D volume acquired in the arterial phase is reconstructed every 1.5°.
