In this webinar, Ian Crowlesmith reviewed the following: - Emtree update policy, including backposting - Recent enrichments in medical device terminology - Optimizing retrieval using Emtree

1. Welcome to our Embase webinar!
Using the Emtree thesaurus
to enhance your searching
Your host: Ann-Marie Roche Your presenter: Ian Crowlesmith

2. Need to know...
• Webinar control panel:
o Use the „Questions‟ feature
for all your questions
o Option for full screen view
• Time for Q&A during and after
the presentation

3. Using the Emtree thesaurus to
enhance your searching
Agenda as announced
1. Review Emtree update policy, including backposting
2. Recent enrichments in medical device terminology
3. Optimizing retrieval using Emtree
Today’s webinar
(including all announced topics above)
1. What you need to know about Emtree
2. How to search Emtree in Embase.com
3. Using Emtree to get the best out of your Embase search
4. Q&A (including opportunity for live demo)
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4. Medical Device industry segments
Sub-Segments Products by sub-segment
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• Orthopedic replacements • Hip and joint replacements, bone nails screws
Orthopedics/Spine
• Implantable spinal devices • Spinal stimulators, thoracolumbar implants
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• Dental equipment • Hand held instruments, lasers dental chairs
Dental
• Dental materials • Cements and impression materials, implants
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• Ophthalmic systems and devices • Cataract surgery products, intraocular lenses,
Ophthalmic
• Consumer eye products • Contact + prescription lenses, eye care equipment
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• Devices for analysis of blood, tissues samples; chemical
Biodevice / Diagnostics • In vitro diagnostics
reagents, specialized microscopes
• Medication delivery / dialysis tools
• Insulin + pain control pumps, drug/device combos
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• Cardio implants and devices
• Pacemakers, defibrillators, heart-lung machine
Cardiovascular / Implantable • Non-cardio electro-medical implantable
• Artificial organs, neurostimulators, hearing aids
devices
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• Surgical equipment and systems • Robotics, advanced wound care, sutures
Surgical and Laboratory equipment • Lab and hospital furniture and supplies • Catheters, lab scales, furnaces, laboratory instruments
7 • High-tech imaging equipment • Ultrasound, MRI, cat scanners
Imaging and monitoring equipment • Irradiation apparatus • X-ray equipment and medicine, fluoroscopes
• Monitoring & safety engineered devices • Monitoring machines, remote-patient care
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6. isn’t functioning properly should be considered for metal ion testing.
Adverse effects related to the ion levels include skin rash, visual
impairments, depression, kidney impairment and thyroid dysfunction.
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7. Source: http://www.fda.gov/MedicalDevices/Safety/AlertsandNotices/ucm335775.htm
See also: http://www.fda.gov/MedicalDevices/DeviceRegulationandGuidance/Overview/ClassifyYourDevice/ucm051530.htm
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8. What you need to know about Emtree
1. Emtree is a faceted, polyhierarchical thesaurus (14 facets)
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9. What you need to know about Emtree
2. Focus on drugs and devices, with dynamic updating
Structure Content Updates
Faceted structure Drug-rich content Dynamic updating
• natural-language • >30,000 drug terms • candidate term source list
• synonym-rich • ALL generics, trade names • updates 3x each year
• polyhierarchical & chemical names • all terms backposted
Medical devices
• .> 3,000 device terms
(pre-2012: <1000 terms)
For further information: http://www.embase.com/info/what-is-embase/emtree
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10. What you need to know about Emtree
3. Backposting
Function Search date: in 2011 Search date: > Jan-2012
Emtree Preferred Term: 4 [n [1 (2 cyano 1 Preferred Term: tofacitinib
oxoethyl) 4 methyl 3 piperidinyl] n Synonym: 4 [n [1 (2 cyano 1 oxoethyl) 4
methylamino]pyrrolo [2,3 d]pyrimidine methyl 3 piperidinyl] n methylamino]
Candidate Term: tofacitinib pyrrolo [2,3 d]pyrimidine
Embase Most records are indexed with: 4 [n [1 Via backposting, all records (for all
(2 cyano 1 oxoethyl) 4 methyl 3 piperidinyl] years) are indexed with: tofacitinib
n methylamino]pyrrolo [2,3 d]pyrimidine
(A few records are indexed with tofacitinib
as candidate term)
Search 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3 4 [n [1 (2 cyano 1 oxoethyl) 4 methyl 3
piperidinyl] n methylamino]pyrrolo [2,3 piperidinyl] n methylamino]pyrrolo [2,3
d]pyrimidine  most results d]pyrimidine maps to tofacitinib
tofacitinib retrieves some hits Both terms  same results (all years)
(these are the records in which tofacinib is
a candidate term)
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11. What you need to know about Emtree
Questions so far ?
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12. How to search Emtree in Embase.com
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13. How to search Emtree in Embase.com
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14. How to search Emtree in Embase.com
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15. How to search Emtree in Embase.com
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16. How to search Emtree in Embase.com
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17. How to search Emtree in Embase.com
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18. How to search Emtree in Embase.com
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19. (… continued)
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20. How to search Emtree in Embase.com
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21. How to search Emtree in Embase.com
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22. How to search Emtree in Embase.com
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23. How to search Emtree in Embase.com
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24. How to search Emtree in Embase.com
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25. How to search Emtree in Embase.com
Questions so far ?
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26. Using Emtree to get the best out of your search
Search strategy (1)
1. Identify and search core concepts on Emtree using “Find Term”
(review relevant articles for possible additional terms)
- explode concepts for broad retrieval (e.g. „hip prosthesis‟/exp )
- exact search for precise results (e.g. „Mckee Farrar prosthesis‟/de )
- major focus for highest precision (e.g. „Mckee Farrar prosthesis‟/mj )
- phrase search for increased sensitivity (e.g. hip:de )
(candidate terms are found using :de but not /de)
Combine using Query Builder or within Session Results, or:
Take to Drug / Disease search (see step 3)
(to be continued)
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27. Using Emtree to get the best out of your search
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28. isn’t functioning properly should be considered for metal ion testing.
Adverse effects related to the ion levels include skin rash, visual
impairments, depression, kidney impairment and thyroid dysfunction.
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29. Using Emtree to get the best out of your search
Search strategy (1): initial approach
Question: where are hip implants in Emtree ?
Solutions: (1) use Find Term hip  hip prosthesis
(2) search ‘hip implant’:ti and review index
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30. Using Emtree to get the best out of your search
Search strategy (1): revised approach
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31. Using Emtree to get the best out of your search
Search strategy (1): compiled results
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32. Using Emtree to get the best out of your search
Search strategy (1)
1. Identify and search core concepts on Emtree using “Find Term”
(review relevant articles for possible additional terms)
- explode concepts for broad retrieval (e.g. „hip prosthesis‟/exp )
- exact search for precise results (e.g. „Mckee Farrar prosthesis‟/de )
- major focus for highest precision (e.g. „Mckee Farrar prosthesis‟/mj )
- phrase search for increased sensitivity (e.g. hip:de )
(candidate terms are found using :de but not /de)
Combine using Query Builder or within Session Results, or:
Take to Drug / Disease search (see step 3)
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33. Using Emtree to get the best out of your search
Search strategy (2/3)
1. Identify and search core concepts on Emtree using “Find Term”
(review relevant articles for possible additional terms)
- explode concepts for broad retrieval (e.g. „hip prosthesis‟/exp )
- exact search for precise results (e.g. „Mckee Farrar prosthesis‟/de )
- major focus for highest precision (e.g. „Mckee Farrar prosthesis‟/mj )
- phrase search for increased sensitivity (e.g. hip:de )
(candidate terms are found using :de but not /de)
Combine using Query Builder or within Session Results, or:
Take to Drug / Disease search (see step 3)
2. Add additional concepts from free text
(e.g. concepts not represented in Emtree)
3. Consider drug & disease subheadings
- search floating subheadings (to be demonstrated)
- add subheadings to specific drug/disease terms (cf. step 1)
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34. isn’t functioning properly should be considered for metal ion testing.
Adverse effects related to the ion levels include skin rash, visual
impairments, depression, kidney impairment and thyroid dysfunction.
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35. Using Emtree to get the best out of your search
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36. Using Emtree to get the best out of your search
Search strategy (2): add concepts from free text
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38. Using Emtree to get the best out of your search
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39. Using Emtree to get the best out of your search
Search strategy (3): add disease subheadings
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40. Using Emtree to get the best out of your search
Search strategy (3): intermediate results
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41. Using Emtree to get the best out of your search
Search strategy (4): systematic reviews
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42. Using Emtree to get the best out of your search
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43. isn’t functioning properly should be considered for metal ion testing.
Adverse effects related to the ion levels include skin rash, visual
impairments, depression, kidney impairment and thyroid dysfunction.
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44. Using Emtree to get the best out of your search
(Back to) Search strategy (3): specific disease subheadings
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45. Using Emtree to get the best out of your search
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46. Using Emtree to get the best out of your search
Search strategy (3): specific disease subheadings
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47. Using Emtree to get the best out of your search
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48. Using Emtree to get the best out of your search
Results: article #1
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49. Using Emtree to get the best out of your search
Results: article #1
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50. Using Emtree to get the best out of your search
Results: article #2
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51. Using Emtree to get the best out of your search
Results: article #2
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52. Using Emtree to get the best out of your search
Original article
(… continued)
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53. Using Emtree to get the best out of your search
Comparison with MeSH
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54. Medical devices in Emtree: a summary
1. Emtree structure
Pre-2012: Apparatus , equipment and supplies Post 2012:
- General apparatus …
- Laboratory apparatus …
- Medical apparatus …
2. Emtree terms
Sources consulted include:
Jan 2012: 900 medical device terms - http://www.fda.gov/MedicalDevices (for classifications)
- MeSH (Medical Subject Headings)
Jan 2013: 2500 medical device terms - EMMET (Elsevier Merged Medical Thesaurus)
- ECRI (Universal Medical Device Nomenclature System)
Apr 2013: 3200 medical device terms - http://www.clarimed.com/medical-devices
3. Emtree is key to getting the best search results
• Browsing Emtree => explode, /de, major focus, phrase search
• Use Query builder / add subheadings for drugs / diseases
• Augment search using judiciously chosen free text phrases
• Review articles to find new relevant index terms and repeat
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55. • A Q&A will be sent by email.
• For more information and questions , please contact your regional
e-helpdesk
• Our next webinar is an introduction on April 24 and we will focus
on EBM on May 22, after we get back from MLA.
• Go to http://www.elsevier.com/online-tools/embase/support for
all Embase webinars and archives.
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