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Introduction|ModernConcept|AyurvedicConcept|AyurvedicManagement
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Brief
Modern Concept of Cancer
Introduction, History,
Etiopathogensis,
Epidemiology,
Cause,
Sign & Symptoms, Investigations,
Tumor Marker,
Oncogene,
Supressor gene,
Staging,
Management,
Surgery,
Hormone,
Radiotherapy,
Chemotherapy,
Biologic Therapy
Radiation
19th century was drawing to a close, in 1896 a German physics professor, Wilhelm Conrad Roentgen, presented a remarkable lecture entitled "Concerning a New Kind of Ray." Within months, systems were being devised to use X-rays for diagnosis, and within 3 years radiation was used in the treatment of cancer.
In France a major breakthrough took place when it was discovered that daily doses of radiation over several weeks would greatly improve therapeutic response. The methods and the machines for delivery of radiation therapy have steadily improved. Today, radiation is delivered with great precision in order to destroy malignant tumors while minimizing damage to adjacent normal tissue.
At the beginning of the 20th century, it was discovered that radiation could cause cancer as well as cure it.
Advances in technology are making it possible to aim radiation more precisely than in the past. In Conformal radiation therapy, Radiation is focused to avoid the normal tissues as much as possible.
Conformal proton beam radiation therapy, uses a similar approach to focusing radiation on the cancer. But instead of using X-rays, this technique uses proton beams.
Method of Radiation
Stereotactic surgery and stereotactic radiation therapy are terms that describe several techniques used to deliver a large, precise radiation dose to a small tumor.
Intraoperative radiation therapy (IORT) is a form of treatment that delivers radiation at the time of surgery.
Hyperthermia refers to the use of heat. Heat has been found to kill cancer cells, but when used alone, it does not destroy enough cells to cure the cancer. Heat, delivered by microwaves or ultrasound, has been studied in combination with radiation and may, in some instances, enhance the effect of the radiation.
Chemical modifiers or radiosensitizers are substances that make cancer more sensitive to radiation.
Boron neutron capture therapy :A compound containing the element, boron, is injected into the patient's blood and concentrates in the brain tumor. The brain is then irradiated with neutrons from a nuclear reactor. When a neutron hits a boron atom, a type of radiation is released that has high energy but does not extend far into the surrounding normal brain tissue.
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