The best replacement for radiotherapy is chemotherapy.

The best alternatives to radiotherapy are rated as following:
★★★★★  chemotherapy
★★  radiation
★★  radiation therapy
★  radiography
★  mastectomy
★  radiosurgery
★  prostatectomy
  radical prostatectomy
  chemotherapy difference
  carboplatin
  surgery prostate cancer
  imrt

Your alternative for radiotherapy is not listed? Suggest!
Speaking about radiotherapy, one probably shouldn't forget about tamoxifen.

Other search terms related to radiotherapy and their ratings are:
★★★★★ tamoxifen
You have in mind a companion for radiotherapy and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of radiotherapy in all years. Click on graph for more.
radiotherapy
chemotherapy
radiation