NCCN Guidelines for Patients® | Follicular Lymphoma Grade 1-2

31 NCCN Guidelines for Patients ® : Follicular Lymphoma, Grade 1–2, 2017 3 Overview of cancer treatments Radiation therapy dosimetrist. They will plan the best dose, number and shape of radiation beams, and number of treatments. Your plan will be designed to treat the cancer while sparing normal tissue. Once your treatment plan is made, a set-up session is needed. This session is sometimes called “port film” day or dress rehearsal. The set-up session occurs in the treatment room. Treatment sessions During treatment, you will lie on a table in the same position as done for simulation. Devices may be used to keep you from moving. You will be alone while the therapists operate the machine from the nearby control room. The therapists will be able to see, hear, and speak with you. As treatment is given, you may hear noises. One session takes less than 10 minutes. The types of EBRT include: † † 3D-CRT ( three - d imensional c onformal r adiation t herapy) delivers, from different angles, a photon beam that matches the shape of the target. † † IMRT ( i ntensity- m odulated r adiation t herapy) is a form of 3D-CRT. It further modifies the beam’s intensity during treatment. † † Proton therapy uses proton beams that deliver radiation mostly within the tumor. IGRT ( i mage- g uided r adiation t herapy) can improve how well the radiation beam targets some tumors. IGRT uses the machine that delivers the radiation to also take images of the tumor and normal body structures. This can be done right before or during treatment. These images are compared to the ones taken during simulation. If needed, changes will be made to your body position or the radiation beams. Side effects Side effects from radiation therapy differ among people. Factors like treatment site, radiation dose, and length of treatment play a role. Side effects are cumulative. This means they build up slowly and are worse at the end of treatment. Your doctor will check on you every week during treatment. He or she will review skin care, medicines, and other options to help you feel better. Figure 9 External beam radiation therapy Radiation therapy is often delivered from a large machine called a linear accelerator. The rays pass through skin and travel to the tumor. Healthy tissue is protected using modern types of treatment.