Radaition Therapy In India
by
eshani
Radaition Therapy In India
Radiation therapy or radiotherapy, also called radiation oncology, is the use of ionizing radiation as part of cancer treatment to destroy malignant cells.
What is Radiation Therapy?
Cells reproducing at abnormally high rates are known as Tumors . Radiation therapy specifically acts against such cells that are reproducing rapidly. Normal cells stop reproducing or dividing as they come into contact with other cells. But in the case of a tumor, dividing of the cells does not stop and the cells continue to divide over and over. It is due to the DNA of the cell that makes it capable of reproducing.
In Radiation therapy high energy x-rays are used to damage the DNA of cells, thus it kills the cancer cells, or else stop them from reproducing.This damage is caused by a photon, electron, proton, neutron, or ion beam directly or indirectly ionizing the atoms by which DNA chain is made up of. Indirect ionization occurs due to the ionization of water, forming free radicals, notably hydroxyl radicals, which damages the DNA. Most of the radiation effect is through free radicals, is commonly used form of radiation therapy. But cells have the mechanisms to overcome the DNA damage. So this technique proves to be the most effective in modifying cell characteristics by breaking the DNA on both strands .Because cancer cells are generally undifferentiated and stem cell-like, they reproduce fast and have the capability to repair sub- lethal damage as compared to most healthy differentiated cells. But this damage in DNA is accumulating to the cancer cell which it inherits through cell division,as a result causing them to die or reproduce more slowly. But normal cells are also damaged through Radiation. Actually normal cells grows slowly, so they are capable of repairing this radiation damage better then the cancer cells. This is to replace healthy stem cells in place of the unhealthy ones. This process can cure the disease easily.
Types of Radiation Therapy:
There are mainlytwo main types of radiation therapy : –
a). External radiation therapy: In this case a beam of radiation is directed from outside the body. In internal radiation therapy which is also known as brachytherapy or implant therapy, here a radioactivity source is placed surgically inside the body near the tumor.
b). External radiation: This is also known as x-ray therapy, cobalt therapy, proton therapy, or intensity modulated radiation therapy (IMRT). In this type of radiation a machine called a linear accelerator is used to administered .Depending on the treatment protocol being used, once or twice a day this treatment can be given.
Five days a week and for several weeks the treatments goes on, which depends on the total final dose of radiation that has been planned. In order to give normal cells some time to heal, on weekends patients are given a break from treatment , which reduces the side effects. Someone receiving external radiation therapy is neither radioactive nor dangerous to the people surrounding him or her.
In Internal radiation therapy the source of high-energy rays is placed inside the body, mostly close to the cancer cells. This is done by implanting small pieces of the radioactive substance or else by implanting a reservoir, in which a liquid radioactive substance is injected. Very intense radiation is delivers through this to a small area of the body which limits the dose to the normal tissue. When compared with external treatment internal radiation therapy allows the doctor to give a higher total dose of radiation in a shorter time .
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Radiation Therapy
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A Freelance writer.A few top Medical tourism providers are
India4health
, Asiahealth,
MedicalSingapore
and
Indiaheals.
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ArticleRich.com