Utilize Advanced Radiation Therapy of IMRT to Diagnose Many Fatal Cancers

Intensity-modulated radiation therapy (IMRT) is an advanced technology in radiation oncology that delivers high precision treatment to diagnose tumor and spares the surrounding normal tissues. This technology uses computer-controlled linear accelerators to deliver accurate radiation doses to the specific area of the damaged cells of tumor. It introduces new concepts of inverse planning and computer-controlled radiation deposition and normal tissue avoidance approach. IMRT treatment procedure enables physicians to find three-dimensional shape of the tumor by modulating or controlling the intensity of the radiation beam in multiple small volumes, so that surrounding normal cells would not be affected.

IMRT consists of wide application in most aspects of radiation oncology that creates multiple targets and multiple avoidance structures. In this way it allows higher radiation doses to be focused to regions within the tumor while minimizing the dose to surrounding normal cells. It has introduced a new accelerated fractionation scheme known as SMART (simultaneous modulated accelerated radiation therapy) boost that has the potential of improving tumor control in addition to offering patient convenience and cost savings. IMRT treatment procedure uses computer-controlled X-ray accelerators distribute to precise radiation doses to malignant tumors or specific areas within tumor. The intensity of radiation dose is elevated near the gross tumor volume while radiation among the neighboring normal tissue is completely untouched.

The intensity-modulated radiation therapy has the ratio of normal tissue dose to tumor dose is reduced to a minimum. The higher and more effective radiation doses can safely be delivered to tumors with fewer side effects compared with other conventional radiotherapy techniques. At present, such treatment is extensively being used to treat cancers of the prostate, head and neck and central nervous system. Its limited use is being taken to treat thyroid, lung, breast, gastrointestinal, gynecologic malignancies and some types of sarcomas.

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