Figure 4

An example of MR-fluoroscopy is illustrated. MR-fluoroscopy can be used in place of test bolus techniques. In MR-fluoroscopy, continuous image acquisition with online image reconstruction is performed. Whenever the contrast bolus arrives in the area of interest, acquisition of the MRA-sequence can be either manually or automatically initiated. Even with the time-efficiency and ease-of-use of this technique, the abrupt switch from fluoroscopic measurements to the actual MRA-acquisition often minimizes the time for the patient to inspire for the breath hold, consequently increasing the risk of motion artifact.