How is VBT performed?

You will be taken to the interventional laboratory where the procedure to re-open the narrowed stent in the artery of your leg is performed. Following this procedure, if you are part of the Roll-in phase, or are randomized to receive treatment with our peripheral VBT system, a catheter with a balloon on the end of will be positioned in the previously narrowed portion of the artery. The balloon is then inflated to a very low pressure to keep the artery open for the beta radiation treatment. The Strontium 90 beta radiation sources are then hydraulically delivered through this catheter to the treatment site where they will remain in place for a prescribed length of time, typically 3 to 4 minutes. Since blockages in the leg can be long, up to 6 separate treatments may need to be performed at different positions in the artery. The beta radiation sources are removed after each treatment; no radiation remains in the body.