Overview Of Radiotherapy In Cancer
How Radiotherapy works against cancer?
Radiation therapy (also called radiotherapy) is an extremely effective Cancer Treatment with wide-ranging applications. Radiation therapy contributes to cancer cure in many patients (either alone or with other treatments) and/or alleviates symptoms induced by more advanced cancers. There are validated roles for almost all cancer types.
Radiotherapy is a highly targeted treatment, aimed accurately and directly at the cancer wherever it could be in the body. This enables the cancer cells to be killed or reduced in number while protecting the large proportion of other organs and tissues in the body.
Radiation treatment leads to 40 per cent of all cancer therapies world-wide as well as relieving symptoms, such as pain, and improving the quality of life for many others. In certain common cancers, such as breast cancer, bowel cancer and prostate cancer, Radiation therapy is highly effective in minimising the risk of cancer recurrence following Surgery or making the procedure more successful. This can even heal the cancer if it has recurred locally following Prostate Cancer Surgery. For certain cancers (prostate, head and neck, liver, lung, cervix and skin cancers), radiation therapy, with or without drug therapy, may be used as the primary curative treatment and in this way eliminates the complications of Surgery and the loss of organs.
For certain cancers that are too advanced to be healed, Radiation therapy is beneficial for Pain and other complications caused by cancer, such as bleeding from the lung or bladder. For example, Pain in the bones from the spread of cancer can be improved dramatically or be eliminated entirely in about 75 per cent of patients.
Cells and radiation:
The cell cycle process is critical because usually, radiation first destroys the cells that are actively dividing. This does not function very fast on cells that are in the resting stage (G0) or are dividing less frequently. The amount and type of radiation that enters the cell and the speed of cell growth determine whether and how easily the cell can die or be injured. The word radio sensitivity explains how likely the cell is to be affected by radiation. Cancer cells tend to divide quickly and grow out of control. Radiation therapy destroys cancer cells that are dividing, but it also affects dividing cells in healthy tissues. The disruption to normal cells produces undesirable side effects. Radiation treatment is also a balance between killing the cancer cells and minimising damage to the healthy cells. Radiation doesn’t always kill cancer cells or healthy cells right away. It may take days or even weeks of treatment for cells to start dying, and they may keep dying off for months after treatment ends. Tissues that develop rapidly, such as skin, bone marrow, and the lining of the intestines are often affected right away. In comparison, nerve, breast, brain, and bone tissue demonstrate subsequent effects. Therefore, radiation treatment can cause side effects that might not be seen until long after treatment is over.