Ultrasound therapy machine malaysia


ultrasound therapy machine malaysia

The staff working with the radiation oncologist (including physicists and dosimetrists) use sophisticated computers to design the details of the exact radiation plan that will track and field 2012 olympics be used.
Palliative treatments are not intended to cure.Temporary skin marks and even tattoos are used to help with precise patient positioning.Radiation doses for cancer treatment are measured in a unit called a gray (Gy which is a measure of the amount of radiation energy absorbed by 1 kilogram of human tissue.After simulation, the radiation oncologist then determines the exact area that will be treated, the total radiation dose that will be delivered to the tumor, how much dose will be allowed for the normal tissues around the tumor, and the safest angles (paths) for radiation.On the first day of treatment, and usually at least weekly after that, many checks are made to ensure that the treatments are being delivered exactly the way they were planned.In such cases, radiation therapy may be used alone or in combination with surgery, chemotherapy, or both.Doctors take potential damage to normal cells into account when planning a course of radiation therapy (see Question 5).The amount of radiation that normal tissue can safely receive is known for all parts of the body.About half of all cancer patients receive some type of radiation therapy sometime during the course of their treatment.Radiation therapy uses high-energy radiation to shrink tumors and kill cancer cells (1).Different doses of radiation are needed to kill different types of cancer cells).Radiation therapy is sometimes given with curative intent (that is, with the hope that the treatment will cure a cancer, either by eliminating a tumor, preventing cancer recurrence, or both) (1).No, radiation therapy can also damage normal cells, leading to side effects (see Question 10).Radiation therapy can either damage DNA directly or create charged particles (free radicals) within the cells that can in turn damage the DNA.Body molds, head masks, or other devices may be constructed for an individual patient to make it easier for a patient to stay still.After approving the plan, the radiation oncologist authorizes the start of treatment.CT scans are often used in treatment planning for radiation therapy.How is radiation therapy planned for an individual patient?The radiation may be delivered by a machine outside the body (external-beam radiation therapy or it may come from radioactive material placed in the body near cancer cells (internal radiation therapy, also called brachytherapy).
X-rays, gamma rays, and charged particles are types of radiation used for cancer treatment.
What is radiation therapy?




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