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Principles of image-guided radiotherapy (IGRT)

Principles of image-guided radiotherapy (IGRT)

IGRT allows visualization  and  computer localization of the tumor either directly or indirectly with metallic markers inside the tumor before radiation treatment is given. When the tumor shrinks during the treatment regimen or the patient’s anatomy changes because of weight loss, re-planning may be necessary to avoid excessive irradiation outside the smaller tumor. Visualization of…

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