What Are The Various Methods Of Radiation Therapy?
There are two types of radiation therapy – the external radiotherapy and internal radiotherapy. The effectiveness of external radiation therapy can be achieved by using certain refined techniques like Three-dimensional conformal radiation therapy, Intensity Modulated Radiation Therapy (IMRT) and Proton Beam Radiation Therapy (PBRT).
The Stereo tactic radiotherapy is a method used in the treatment of brain tumors. It can be done in three ways such as Linac-based stereo tactic radiosurgery, using heavy charged proton or helium ions and the gamma knife technique. Brachytherapy is another advanced method. You can also get more details on radiation therapy from sites like https://www.icrmc.org/.
Effectiveness of Radiation therapy on different types of cancer
Radiation therapy has prolonged the survival of cancer patients. As in every treatment different cells respond differently to this treatment also. Radio sensitivity depicts the response of cancer cells. Radiation dose is the term used to depict the amount of radiation absorbed by the cancer cells. The currently used unit of the radiation dose is Gray (gy).
The highly sensitive cancer cells like blood cancer and germ cell tumors are rapidly destroyed by the minute doses of radiation. Moderately sensitive cells like skin cancer cells need a higher dose of radiation.
There are even cells that are radio resistant. Melanoma and renal cell cancer are good examples. In such cases a higher dose of radiation is preferred. Curative sensitivity of the tumors differ from each other.
Leukaemia cannot be cured as the cancerous cells spread throughout the body. Lymphoma can be cured if it is concentrated on one specific area. The radio responsive tumors are routinely treated with curative doses of radiotherapy.