IGRT :
Image guided radiation therapy (IGRT) refers to a type of external beam radiation therapy that kills, shrinks, and eliminates cancerous cells. A machine called LINAC (linear accelerator) is used to direct the targeted radiation to the cancerous cells in the form of high energy photons. It never touches the body. Radiation oncologists use IGRT to treat prostate cancer, abdominal cancer, lung cancer, brain cancer, head and neck cancer, and gynecological cancer like vaginal cancer, uterine cancer, and ovarian cancer. Radiation oncologists use the images and scans with laser light based accuracy to make an appropriate treatment plan. Image guided radiation therapy involves scans that include X-rays, computed tomography scans, magnetic resonance imaging scans, ultrasound tests, and positron emission tomography scans. It may take 15 to 20 minutes time. It is effective and very safe to treat tumors in the areas of the body. Side effects may include fatigue, diarrhea, skin changes like itchiness and irritation, nausea, and vomiting.