Carcinoma of the bladder. Cystectomy after supervoltage therapy.
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Biomedical subjects
Publications and source records attributed to F Edsmyr.
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Experimental observations are described which form the basis of a low dose-fractionation scheme designed in an attempt to circumvent the problem presented for radiotherapy by the particular radioresistance of poorly oxygenated cells. In a preliminary investigation the scheme was tested in the treatment of carcinoma of the bladder. A total of 45 patients were included in the trial, randomized to be treated according to either of two fractionation schemes. Scheme I : 100 rad 3 times a day, 5 days a week, a total tumor dose of 8 400 rad, 2 weeks of rest in middle of the treatment period. Scheme II : 200 rad once a day, 5 days a week, a total tumor dose of 6 400 rad, 2 weeks of rest in the middle of the treatment period. The results suggest an improved therapeutic ratio with Scheme I in comparison to Scheme II.