The Use of Tantalum 182 in the Treatment of Early Bladder Carcinoma

The methods available for dealing with early carcinoma of the bladder are briefly reviewed, and it is considered that more attention should be paid to the possibilities offered by interstitial irradiation, particularly in the matter of uniform and adequate dosage to the lesion-bearing area, and the reduction of dosage to unaffected areas of bladder to a minimum. New methods of using tantalum 182 wire to achieve these ends are described with illustrative cases. The physical principles governing uniformity of dosage in these implants are briefly discussed.