In the palliative setting, in general the treatment conventionally can be done over one fraction( one treatment), 5 fractions or 10 fractions. Other considerations, will include the area treated, the size of the area treated and accessibility of the radiotherapy centre.
In the curative setting, the conventional radiotherapy either 3D Conformal Radiotherapy or Intensity Modulated Radiotherapy Treatment (IMRT) may include multiple treatments from fifteen fractions ( eg in chest-wall treatment after Total Mastectomy) to as many as thirty-nine fractions ( eg Prostate Cancer). Nowadays you have very focal treatment in the radical setting that can be delivered via special techniques and special radiotherapy equipments eg stereotactic body radiotherapy by Linear Accelerators or by Gamma -Knife or by Cyberknife, that can deliver radical doses from single fractions to ten fractions. Again location and size of the lesions play an important factor determining the number of fraction used.
the radiotherapy in combination with the
chemotherapy, the better is the result.