Apparatus and methods are provided for relieving a stenosed region of a blood vessel such as a coronary using a single catheter that relieves the angioplasty by conventional means and then delivers an easily controllable inherently uniform dosage of radiation to the walls of a blood vessel for preventing...http://www.google.com/patents/US5662580?utm_source=gb-gplus-sharePatent US5662580 - Combined angioplasty and intravascular radiotherapy method and apparatus
