an interesting new technology from Toshiba. looks like it will be easier to measure flow without contrast agent....
AlexWith exceptional sensitivity to slow flow, FBI is particularly well-suited for evaluating peripheral vascular diseases of the lower legs and extremities. It acquires arterial and venous flow in a single coronal pass requiring less scan time than other MRA techniques. FBI also eliminates sensitivity to issues like improper timing, turbulent flow and differential filling that can cause contrast-based MRA to fail.