Purpose: The Japanese Task Group of the Japanese Society for Oral and Maxillofacial Radiology (JSOMR) has worked on the project of “Dental Mapping and Query-Retrieve (Q-R)”. This is an approved work item of DICOM WG-22 (Dentistry). The project aims to utilize the coding of teeth to create x-ray charts for mapping and viewing intraoral radiographs. An interoperable solution is necessary for dental practice. Therefore, we carried out a survey of display mapping and viewing solutions for intraoral radiographs in university dental hospitals.
Methods: The Task Group sent questionnaires on display formats to 80 representatives of JSOMR using the mailing list, jsomr-daigiin@umin.ac.jp (JSOMR-daigiin-ML) on Dec.10, 2010. We sent the questionnaire to all 29 university dental hospitals. We indicated typical patterns and asked whether each affiliation uses these patterns or not. We asked the respondents to indicate exceptional patterns.
Results: The survey showed the display mapping and format patterns of intraoral radiographs that were used in dental school hospitals in Japan, in Dec. 2010. A finite number of templates were used in university dental hospitals in Japan.
Discussion & Conclusions: Our proposal to the DICOM Standards is to define specific examination codes (DICOM tags) for intraoral radiography techniques and to add tags for designation of specific displaying templates. This will provide a solution for the dental query-retrieve for intraoral radiographs on any given template by achieving a definition of the relationship between tooth/teeth groups and display disposition. A method to specify a finite number of display format templates is possible based on the survey result, which showed that only a finite number of templates are required.
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