Clinical evaluation of MR fluoroscopy on a low-field permanent magnet

Clinical evaluation of MR fluoroscopy on a low-field permanent magnet MR unit was performed. The unit is open-type so that a patient can move even his shoulders and legs during the scanning. During the continuous scan, the scan-reconstruction-display array system produces real-time fluoroscopic imaging by using a part of the prior image data to reconstruct the current image. In the studies of needle biopsy under MR fluoroscopic guide, three dimensional real-time information was effectively available. MR dynamic studies applied to vocal cord, eye and knee movement offered us much additional information that was not obtained in static MR studies. MR fluoroscopy using open-typed apparatus showed the clinical potentiality in dynamic studies of various organs and conditions, and interventional procedures. (author)