Radioactive source wire, apparatus and treatment methods

摘要: A source wire (38) having a radioactive (40) at its distal tip (45) is used to treat tissue target site within patient's body by localized in vivo radiation. The advanced the along pathway such as an implanted catheter (12) or natural vessel duct of from point external body. may be solid lead substantially uniform thickness entire length, composed nickel titanium alloy desired characteristics including flexibility, springiness, slipperiness, mechanical strength and shape memory retention. Instead, cable multiple strands throughout length each strand. In either case, end overall tapered for ease entry into narrower portions pathway.