Patent ID: 6416457
Filing Date: 2002-07-09
Classification: A61M,A61N

Abstract:
A medical system for intravascular ionizing radiation therapy, comprising:an elongate radiation device having a radiopaque marker and a radioactive source disposed adjacent a distal end thereof, the radioactive source having a length and a dose distribution, the dose distribution having a nominal dose, a proximal dose fall-off, a distal dose fall-off, a proximal point in the proximal dose fall-off corresponding to 50% of the nominal dose, a distal point in the distal dose fall-off corresponding to 50% of the nominal dose, wherein the proximal 50% point is separated from the distal 50% point by a distance L; and an elongate guide wire having a plurality of radiopaque markers disposed adjacent a distal region thereof, the radiopaque markers separated by the distance L such that dose fall-off overlap is created when the radioactive source is positioned adjacent each radiopaque marker.