A simple, disposable afterloading applicator for intracavitary irradiation of carcinoma of the nasopharynx has been found useful as a supplementary radiation boost to the primary site. Hopefully, local tumor control can be enhanced by employing this technique.
Examples of multifield and wedged treatment plans are evaluated in terms of the fractionation protocol. Isoeffect distributions derived from time-dose fractionation values are examined, emphasizing alternate treatment schedules of the same plan. The necessity of treating all fields at each session is found to be a function of the detailed nature of the individual treatment plan.
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