Searching  SNOMED  CT  

October  26,  2012  10:45  

Brandon  Ulrich  –  B2i  Healthcare  Reymond  Wilaisono  –  Ministry  of  Health  Holdings,  Singapore  

Main  challenge:  Simplicity  versus  expressivity  

•  Simplicity  and  usability  –  Keep  primary  search  interface  as  simple  as  possible  –  Use  the  same  interface  everywhere  –  Concept  model  to  reduce  potenOal  matches  –  Search  profiles  and  usage  frequencies  to  rank  results  

•  Advanced  searches  –  Find  concepts  based  on  SNOMED  CT’s  semanOcs  –  Reuse  searches  for  refsets,  terminology  binding,  etc.  

October  26,  2012  

Demo  

•  Quick  search  –  Generally-­‐accepted  search  principles  –  More  controversial  choices  

•  SemanOc  search  –  ESCG  (Extended  SNOMED  ComposiOonal  Grammar)  /  HL7  TermInfo  

queries  

October  26,  2012  

Demo  screenshots  

The  following  slides  contain  sample  screenshots  from  the  live  demonstraOon.  

October  26,  2012  

Generally-­‐agreed  SNOMED  CT  search  principles  •  Progressive  matching  •  Highlight  matching  terms  •  Prefix  matching  •  Implicit  AND  •  Strip  accents  and  punctuaOon  •  Visually  idenOfy  top-­‐level  concept  •  Previous  choices  (history)  •  Bookmarks  (favorites)  •  Concept  model  to  constrain  results  •  Search  profile  (context)  

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Progressive  matching  across  all  terminologies  

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Highlight  matching  terms  

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Prefix  matching  

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Implicit  AND  

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Strip  accents  and  punctuaOon  

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Visually  idenOfy  top-­‐level  concepts  

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Previous  choices  

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Bookmarks  

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Concept  model  

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Search  Profile  

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Default  search  profile   Clinician  search  profile  

Display  a  single  preferred  term  per  concept  

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AutocompleOon  

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AutomaOc  query  expansion  

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SemanOc  queries  

ESCG:  Extended  SNOMED  ComposiOonal  Grammar  •  ~HL7  TermInfo  with  support  for  reference  sets  •  AddiOonal  UNION  and  some  Boolean  operators  

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Clinical  finding  descendants  

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Cardiac  valve  findings  

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Dog-­‐free  cardiac  valve  findings  

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