Radioterapia de intensidad modulada (RIM)

If you would like to see more scientifically accurate 3D medical images, please subscribe to our channel:    / nucleushealthvideose   MEDICAL ANIMATION TRANSCRIPT: Your doctor may recommend intensity-modulated radiation therapy (IMRT). This procedure treats certain types of cancer by killing cancer cells or controlling their growth. Cells in the body grow and divide as part of the normal cell cycle. The cell nucleus controls this process. Inside each nucleus, genetic material called DNA contains the instructions for directing this process. Sometimes the DNA in cells is damaged. Normally, the DNA responds by repairing itself or instructing the cell to die. However, in cancer, the parts of the cell's DNA that direct cell division are damaged. When these sections are damaged, the DNA cannot repair itself. Instead, the unrepaired DNA causes the cell to grow and divide uncontrollably into more damaged cells called cancer cells. A tumor forms as cancer cells multiply and spread like normal cells. Radiation kills cancer cells by inflicting extensive damage to their DNA. The tumor shrinks as the cells stop dividing and die. If the tumor is in your head, your radiation therapist may create a mesh frame or place a mask on you to keep you positioned correctly during IMR, or you may have small, permanent tattoos to help align the IMR beam. Your therapist will then perform a CT scan of your head to get a detailed image of your tumor and its borders. Your doctor will use the results to determine the three-dimensional shape of your tumor and nearby vital tissues. The shape, size, type, and location of the tumor help the doctor determine how precisely the IMR beam needs to be adjusted to target the tumor while avoiding damage to healthy tissue. During your procedure, a medical linear accelerator will direct a beam of X-rays at your tumor. A computer inside the accelerator will adjust the beam using a device called a collimator. The collimator adjusts, or modulates, the intensity, direction, and shape of the radiation beam. This feature allows high doses of radiation to be delivered to the tumor while avoiding damage to the surrounding healthy tissue. You may receive many radiation treatments over days or weeks. This allows your body to recover between treatments and kill as many cancer cells as possible. Side effects are usually mild and occur only in the treatment area. Common side effects include localized skin irritation, localized hair loss, or inflammation and swelling near the tumor site. ANH12074es