radiolucent
Học thuậtThân thiện
Definition
Adjective: * Almost completely transparent to X-rays or other forms of radiation: Describes a material or substance, especially in a medical context, that allows most radiation (like X-rays) to pass through it, appearing dark or clear on the resulting image. This contrasts with radiopaque materials, which block radiation and appear white.
Usage
The term is used almost exclusively in medical and scientific contexts to describe the physical property of a substance in relation to diagnostic imaging. * It is typically used to describe tissues, objects, or materials visible in an X-ray, CT scan, or similar imaging technique. * It is a technical descriptor and not commonly used in everyday conversation.
Examples
- Adjective:
- Fat and air are radiolucent, which is why lungs appear dark on a chest X-ray.
- The dentist noted that the area around the tooth root was radiolucent, suggesting a possible cyst.
- Wood and most plastics are radiolucent and are not easily seen on standard X-rays.
Advanced Usage
- The term is often used in a comparative sense with its antonym, radiopaque.
- In a standard X-ray, bones are radiopaque (white), while soft tissues are more radiolucent (darker).
- It can be used in compound adjectives to describe specific findings, but these are considered separate medical terms (e.g., a ).
Variants and Related Words
- Radiolucency (noun): The quality or state of being radiolucent.
- The radiolucency of the gas made the intestinal obstruction visible.
Synonyms
- X-ray transparent (technical)
- Radiolucent has no perfect common-language synonym. Its meaning is best explained as "allowing X-rays to pass through."
Antonyms
- Radiopaque (adj.): Not transparent to radiation; impenetrable by X-rays or other forms of radiation, appearing white on an image.
- Metal and bone are radiopaque.
Adjective
- almost complete transparent to X-rays or other forms of radiation
- radiolucent tissues