The tool uses "optical coherence tomography" to image the structure of blood vessels and any plaque inside. "For the first time, we are able to see exactly where we are removing the plaque, and are better able to leave the healthy artery alone," says Dr. Thomas Davis from St. John Hospital in Michigan. He added that the device should also reduce physician and patient X-ray exposure. For those who suffer from blocked arteries, treatment with the device should ease the cramping, discoloration and numbness of PAD while reducing possible side effects. Also, who doesn't want to have a video of their arteries being unclogged for their grandchildren? Judging by the video below, ew, not me, actually.