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Abstract #4373

Vastly undersampled time-resolved TOF MR angiography in mice with a prospective 3D radial double golden angle approach.

Aurlien Julien Trotier 1 , William Lefranois 1 , Emeline Julie Ribot 1 , Eric Thiaudire 1 , Jean-Michel Franconi 1 , and Sylvain Miraux 1

1 CNRS UMR5536, RMSB, Bordeaux, Aquitaine, France

3D time-resolved cartesian TOF MR Angiography is a powerful method to assess blood flow velocity. Nevertheless total acquisition time required can be prohibitive. The purpose of this work was to develop a 3D TOF MRA based on radial projection trajectories. A first golden angle is used to uniformly distributed projections along time and a second golden angle to obtain different trajectories between cine images. The efficiency and flexibility (retrospective filtering) of this method was performed on mice model at 7T and shown an acquisition time reduction of at least a factor 4 in comparison to cartesian sampling.

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