Development of an automated patient-recognition method for digital chest radiographs using edge-enhanced images

Keisuke Kondo, Junji Morishita, Shigehiko Katsuragawa, Kunio Doi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)


It is important that all images in a picture archiving and communication system (PACS) environment should be stored in the correct location, e.g., in the proper patient's folder. However, if patient information, such as identification number or patient name, has been entered incorrectly, the image may be stored in the wrong place. We are developing an automated patient recognition method for chest radiographs based on a template-matching technique to prevent such filing errors. To further improve the performance of our method, we investigated the usefulness of a new automated patient-recognition method based on a template-matching technique by using edge-enhanced and smoothed images. We found that the relationship between the correlation values obtained with and without the edge-enhancement technique tended to provide different criteria for identifying correct or incorrect patients. When we combined the two methods to distinguish the images by a rule-based method, 67.1% of wrongly identified patients in our database could be identified as wrongly identified, without any false warnings for correctly identified patients. We consider that this automated method for patient recognition based on edge-enhanced images would be useful in preventing "wrong" images from being stored in a PACS environment.

Original languageEnglish
Pages (from-to)1277-1284
Number of pages8
JournalNippon Hoshasen Gijutsu Gakkai zasshi
Issue number10
Publication statusPublished - Oct 2003
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Medicine(all)


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