Assessment of the Supra-Aortic Vessels Using Time-Resolved Double-Bolus 3D TWIST-MRA

Andreas Korn¹, Till K. Hauser¹, Sren Danz¹, Benjamin Bender¹, Michael Fenchel¹, Thomas Ngele¹, Ulrike Ernemann¹, Uwe Klose¹

MRA of the supra-aortic vessels is usually performed in CARE bolus technique, which necessitates high operator experience and interaction with the control panel. TWIST requires less operator experience and interaction. Goal of the present work was to implement an automated and therefore robust protocol for the TWIST angiography of the supra-aortic vessels with high spatial resolution and increased likelihood of optimal arterial contrast by double bolus injection. The new double bolus injection protocol allowed for good separation of arterial vessels at least after one of the two bolus applications.