Using a fluorescent dye that illuminates the blood vessels under a strong x-ray, the physician inserts a long, thin, flexible tube called a catheter into an artery in the leg and maneuvers it all the way to the blockage.

使用荧光染料在强 X 射线下照亮血管，医生将一根又长又细又灵活的管子（ 称为导管）插入腿部动脉，并一直移动到阻塞处。