The IRMA code for unique classification of medical images

被引:85
作者
Lehmann, TM [1 ]
Schubert, H [1 ]
Keysers, D [1 ]
Kohnen, M [1 ]
Wein, BB [1 ]
机构
[1] Rhein Westfal TH Aachen, Dept Med Informat, D-5100 Aachen, Germany
来源
MEDICAL IMAGING 2003: PACS AND INTEGRATED MEDICAL INFORMATION SYSTEMS: DESIGN AND EVALUATION | 2003年 / 5033卷
关键词
standardized nomenclature; digital Imaging and communication in medicine (DICOM); picture archiving and communication systems (PACS); content-based image retrieval (CBIR); image classification code;
D O I
10.1117/12.480677
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
Modem communication standards such as Digital Imaging and Communication in Medicine (DICOM) include non-image data for a standardized description of study, patient, or technical parameters. However, these tags are rather roughly structured, ambiguous, and often optional. In this paper, we present a mono-hierarchical multi-axial classification code for medical images and emphasize its advantages for content-based image retrieval in medical applications (IRMA). Our so called IRMA coding system consists of four axes with three to four positions, each in {0.... 9,a,...,z}, where "0" denotes "unspecified" to determine the end of a path along an axis. In particular, the technical code (T) describes the imaging modality; the directional code (D) models body orientations; the anatomical code (A) refers to the body region examined; and the biological code (B) describes the biological system examined. Hence, the entire code results in a character string of not more than 13 characters (IRMA: TTTT - DDD - AAA - BBB). The code can be easily extended by introducing characters in certain code positions, e.g., if new modalities are introduced. In contrast to other approaches, mixtures of one- and two-literal code positions are avoided which simplifies automatic code processing. Furthermore, the IRMA code obviates ambiguities resulting from overlapping code elements within the same level. Although this code was originally designed to be used in the IRMA project, other use of it is welcome.
引用
收藏
页码:440 / 451
页数:12
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