Abstract
An afterloading system for remote-control focal intracavitary irradiation of bladder cancer is presented. With 192Ir as radiation source, we demonstrated the practicability of the method in 23 chinchilla rabbits. A system for focal intracavitary irradiation of bladder cancer in humans was developed. A guiding tube with an inflatable balloon led to a reproducible vesical diameter. The intravesical part of the tube was shielded with lead and had a slit for focal radiation exposure. Three variant guiding tubes with different positions of the slit were designed to allow irradiation of any part of the bladder. The application is planned in patients with locally advanced tumors who refuse radical cystectomy or who are medically inoperable.
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