"Slide 16: CHOICE OF DOSE In radical radiotherapy choice of dose & fractionation regimen depends on following factors: - Radio sensitivity of tumor - e.g. radiosensitive tumor such as seminoma can be controlled by total dose of 30Gy / 4wks While for moderately sensitive sq. cell ca. of head & neck higher doses of the order of 50-60Gy in 5-6wks is used."