Visualization of Collateral Vessels in 4D TRANCE MR Angiography Compaired with 3D TOF in Moyamoya Disease

Compared with 3D-CE-MRA, TOF technology isn't conducive to display slow blood flow. Moreover, TOF angiography is a static approach that lacks flow dynamic information. In our study, the 4D TRANCE MRA depicted the proximal arteries better than 3D TOF and may replace TOF angiography. Our study also indicated that LMA collaterals were better visualized in 4D TRANCE angiography and visualization of distal cerebral arteries and collateral vessels with Moyamoya disease with 4D TRANCE MR angiography was good to excellent. Besides conventional MRA to show the shape and distribution of blood vessels, it can also provide hemodynamic information of vascular diseases.