Roentgen ray therapy, also known as radiation therapy, is a popular treatment for cancer. It involves using high-energy radiation to destroy cancer cells and shrink tumors. This type of therapy can be administered externally or internally, and it is often used in combination with other treatments like chemotherapy and surgery. Other synonyms for roentgen ray therapy include radiation oncology, radiation treatment, and ionizing radiation therapy. Despite its effectiveness in treating cancer, roentgen ray therapy can have side effects like fatigue, skin irritation, and nausea. Doctors usually work with patients to manage these side effects and improve their quality of life during treatment.