Semantics (Greek semantikos, giving signs, significant, symptomatic, from sema, sign) refers to the aspects of meaning that are expressed in a language, code, or other form of representation (Wikipedia). How often does it happen that you can't find the right term for something you are looking for but you know it has something to do with "(your term)". Radiology Search just implemented a new technology which uses a relational (semantic) search to help you out in this dilemma! As an example (for junior residents): you are searching for this "weired lipoma like lesion in the kidney with some vessels in it". Just type in "Lipoma" and the search engine searches for relational terms. It offers you parental terms (Lipoma belogs to Fatty neoplasm), similar entities as well as so called "child" terms, including Angiolipoma and Angiomyolipoma. Bingo! Angiomyolipoma - That's the term I was looking for! You can even select the provided links and receive other, relational information, such as "Angiomyolipoma belongs to parent Lipoma", etc.
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