What does "radiograph" refer to in medical imaging?

The term "radiograph" specifically refers to an X-ray image that is produced by using radiation to create a visual representation of internal structures. In this context, "radiograph" derives its meaning from "radio" indicating the use of radiation, and "graph" suggesting a recording or image. This type of imaging is commonly utilized in veterinary and human medicine to diagnose conditions, evaluate bone fractures, and assess various health issues by providing a clear image of dense tissues such as bones.

The other modalities listed—magnetic resonance imaging (MRI), computed tomography (CT) scans, and ultrasound imaging—are distinct forms of medical imaging that use different technologies and principles. MRI uses strong magnetic fields and radio waves, CT scans involve a series of X-ray images taken from different angles and processed using computer algorithms, and ultrasound employs high-frequency sound waves to create images of soft tissues. Each of these techniques offers unique advantages and is used for various diagnostic purposes, but none are synonymous with the term "radiograph."