Hi,
seems crazy, you should have many undesirable veins! We run a 3D TOF MRA of the circle of willis without contrast with best results (1.5T and 3T).
Contrast enhanced 3D MRA of the carotids are done with machine injection (never with a butterfly!), automated bolus detection and a flow of 3ml/sec and 25 ml Gad. If no bolus detection program is available, look for the delay with a test bolus of 2ml. With a high resolution scan, both carotids and circle of willis are assessable. The use of a set like Smartset for the injection is helpful if no power injector is available.
Just started a new job and the tech there insists on injecting with a butterfly then coming out and running a 3D MRA of the Head. Has anyone ever heard of this? I have done carotids but not Circle of willis. If there is such a thing please let me know your Protocol. I am open to any suggestions on the Carotids to. She injects them with a butterfly as well and what a mess. Help I just got back on GE echospeed after 5 yrs and no manual. Just a crazy tech. Please help.
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