Fig. 1.

A). Free-breathing REACT NCE-MRA maximum intensity projection (MIP) image of the thoracic outlet with arms down. REACT MRA in both the arms adducted and abducted positions demonstrate normal appearance of the vessels at the thoracic outlet without evidence of collaterals, thrombus or stenosis. Venous signal demonstrates patency of the great veins on REACT and can be differentiated from the arteries by their slightly lower signal intensity. B). Free-breathing REACT NCE-MRA MIP image with arms up. C). Time-resolved CE-MRA confirms patency of the great vessels of the aortic arch, as depicted earlier on REACT.