Journal of Pathology Informatics Journal of Pathology Informatics
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Year : 2011  |  Volume : 2  |  Issue : 1  |  Page : 2

Quantification of virtual slides: Approaches to analysis of content-based image information

UICC-TPCC, Institute of Pathology, Charite, Charite Platz, D-10118 Berlin, Germany

Correspondence Address:
Klaus Kayser
UICC-TPCC, Institute of Pathology, Charite, Charite Platz, D-10118 Berlin
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/2153-3539.74945

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Virtual microscopy, which is the diagnostic work on completely digitized histological and cytological slides as well as blood smears, is at the stage to be implemented in routine diagnostic surgical pathology (tissue-based diagnosis) in the near future, once it has been accepted by the US Food and Drug Administration. The principle of content-based image information, its mandatory prerequisites to obtain reproducible and stable image information as well as the different compartments that contribute to image information are described in detail. Automated extraction of content-based image information requires shading correction, constant maximum of grey values, and standardized grey value histograms. The different compartments to evaluate image information include objects, structure, and texture. Identification of objects and derived structure depend on segmentation accuracy and applied procedures; textures contain pixel-based image information only. All together, these image compartments posses the discrimination power to distinguish between object space and background, and, in addition, to reproducibly define regions of interest (ROIs). ROIs are image areas which display the information that is of preferable interest to the viewing pathologist. They contribute to the derived diagnosis to a higher level when compared with other image areas. The implementation of content-based image information algorithms to be applied for predictive tissue-based diagnoses is described in detail.

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