Ultrasonically guided percutaneous interstitial implantation of iodine 125 seeds in cancer therapy

A new method for ultrasonically guided percutaneous interstitial implantation of 125I seeds in abdominal tumours is described. A linear array puncture transducer mounted on a special x-y-z co-ordinate frame is used in combination with a special insertion technique. Following in vitro experiments the technique was applied in two patients with pancreatic cancer. There were no immediate complications after the implantation of 36 and 37 125I seeds.