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Journal of Digital Imaging

, Volume 30, Issue 1, pp 4–10 | Cite as

Building and Querying RDF/OWL Database of Semantically Annotated Nuclear Medicine Images

  • Kyung Hoon Hwang
  • Haejun Lee
  • Geon Koh
  • Debra Willrett
  • Daniel L. RubinEmail author
Article

Abstract

As the use of positron emission tomography-computed tomography (PET-CT) has increased rapidly, there is a need to retrieve relevant medical images that can assist image interpretation. However, the images themselves lack the explicit information needed for query. We constructed a semantically structured database of nuclear medicine images using the Annotation and Image Markup (AIM) format and evaluated the ability the AIM annotations to improve image search. We created AIM annotation templates specific to the nuclear medicine domain and used them to annotate 100 nuclear medicine PET-CT studies in AIM format using controlled vocabulary. We evaluated image retrieval from 20 specific clinical queries. As the gold standard, two nuclear medicine physicians manually retrieved the relevant images from the image database using free text search of radiology reports for the same queries. We compared query results with the manually retrieved results obtained by the physicians. The query performance indicated a 98 % recall for simple queries and a 89 % recall for complex queries. In total, the queries provided 95 % (75 of 79 images) recall, 100 % precision, and an F1 score of 0.97 for the 20 clinical queries. Three of the four images missed by the queries required reasoning for successful retrieval. Nuclear medicine images augmented using semantic annotations in AIM enabled high recall and precision for simple queries, helping physicians to retrieve the relevant images. Further study using a larger data set and the implementation of an inference engine may improve query results for more complex queries.

Keywords

Image retrieval Nuclear medicine PET Controlled vocabulary Protégé AIM ePAD 

Notes

Acknowledgments

This work was supported in part by grants from the National Cancer Institute, National Institutes of Health, U01CA142555 and 1U01CA190214.

Compliance with Ethical Standards

This study was approved by the Institutional Review Board and written consent was waived.

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Copyright information

© Society for Imaging Informatics in Medicine 2016

Authors and Affiliations

  • Kyung Hoon Hwang
    • 1
  • Haejun Lee
    • 1
  • Geon Koh
    • 1
  • Debra Willrett
    • 2
  • Daniel L. Rubin
    • 2
    • 3
    Email author
  1. 1.Department of Nuclear MedicineGachon University Gil Medical CenterIncheonSouth Korea
  2. 2.Department of RadiologyStanford UniversityStanfordUSA
  3. 3.Department of Medicine (Biomedical Informatics Research)Stanford UniversityStanfordUSA

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