Radiation Oncology

Radiation Oncology or Radiation Therapy Radiotherapy is an advanced medical speciality that plays a pivotal role in cancer treatment. Radiation therapy uses high-energy X-rays known as photons that are delivered through a linear accelerator that destroys cancer cells.


The high-energy x-rays are painless and invisible and are used in treating various cancer types at different stages.

It is also recommended for relieving symptoms in case of cancer recurrence or metastatic cancer. The expert under whom this treatment gets administered is Radiation Oncologist.

Who Needs Radiation Therapy?

More than 50% of cancer patients need radiation therapy as part of their cancer treatment. Oncologists use radiation therapy to treat almost every type of cancer cell. Moreover, radiation therapy is beneficial in curing some benign tumours (noncancerous).


Radiation therapy kills cancer cells or slows down their growth. Radiation therapy generally uses powerful and high doses of radiation to kill cancer cells and minimize the size of tumours.

Radiation therapy is mostly used in treating the early stages of cancer or after it has spread to other regions. Radiation therapy can be used to treat cancer completely (curative radiotherapy) or make other treatment options very effective, where it can be combined with chemotherapy or used before surgery(neo-adjuvant radiotherapy).

No, radiation therapy does not hurt, or burn when it enters the body. You will hear a clicking sound throughout the treatment and there may be a smell from the machine.

Side effects of radiation include:

  • Hair loss
  • Fatigue
  • Memory issues
  • Nausea
  • Vomiting
  • Changes in skin
  • Headache
  • Blurred vision
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