noncontrast
non-KON-trast
Definition
Referring to an imaging scan or diagnostic test performed without the use of an injected or ingested contrast agent.
Etymology
The word is formed by combining the prefix 'non-' (meaning not) with the noun 'contrast' (from the Latin 'contra' meaning against, and 'stare' meaning to stand). It evolved in medical terminology to specify procedures that avoid the use of chemical dyes intended to enhance image visibility.
In the news
The article uses the term to distinguish between standard medical imaging and specialized contrast-enhanced scans in the context of diagnostic accuracy. It serves as a benchmark for evaluating when algorithmic interpretations of medical data might be limited by the quality of input images.
Are LLMs shifting the balance between ‘exploration and exploitation’ in research funding?
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