What branch of medicine focuses on X-rays and radioactive substances?

The branch of medicine that focuses on X-rays and radioactive substances is radiology. Radiology is essential for diagnosing and treating diseases through medical imaging techniques, which include not only X-rays but also CT scans, MRIs, and ultrasounds. This field utilizes various forms of radiation to create images of the body’s internal structures, allowing healthcare professionals to observe and assess conditions that may not be visible through physical examination alone. Radiologists are specially trained physicians who interpret these images to aid in diagnosis and treatment planning, which underscores the pivotal role of radiology in modern medicine.