Radiolucent refers to a substance or material that allows X-rays or other forms of radiation to pass through it with little or no attenuation, resulting in little or no image density or shadowing on a radiographic image. Radiolucent objects appear dark or black on an X-ray film or image. Examples of radiolucent materials include air, some plastics, and certain types of tissue. Radiolucent materials are useful in medical imaging because they allow doctors and radiologists to see through them and visualize structures or organs that would otherwise be obscured on an X-ray image.
