Application of confocal scanning laser microscopy for an automated nuclear grading of prostate lesions in three dimensions |
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Authors: | M. BEIL,T. IRINOPOULOU,J. VASSY,& J. P. RIGAUT |
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Affiliation: | Laboratory of Image Analysis in Cell Pathology, AIPC, Institute of Haematology, Hospital St. Louis, University Paris VII, 1, av. Vellefaux, F-75475 Paris Cedex 10, France |
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Abstract: | Confocal scanning laser microscopy provides the opportunity to obtain three-dimensional (3-D) images by piling up consecutive confocal planes. This technique was applied to capture 3-D images from 100-μm-thick tissue blocks from prostate lesions (hyperplasia, dysplasia, adenocarcinomas). Automated methods were implemented to perform a nuclear grading of 3-D cell nuclei from these specimens. Special attention was focused on the development of a new approach to 3-D chromatin texture analysis. This method uses mathematical morphology operations to tessellate the chromatin into homogeneous domains. The nuclear features (volume, shape, texture) were subjected to a discriminant analysis. Using a set of five features, the classification of cell nuclei yielded an accuracy of 963%. The results indicate the potential of 3-D imaging and analysis techniques for an automated nuclear grading of prostate lesions. |
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Keywords: | 3-D image analysis 3-D imaging chromatin confocal scanning laser microscopy nuclear grading prostate lesions texture analysis. |
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