Confocal DNA cytometry: a contour-based segmentation algorithm for automated three-dimensional image segmentation

Jeroen A M Beliën, Hielke A H M van Ginkel, Paulos Tekola, Lennert S Ploeger, Neal M Poulin, Jan P A Baak, Paul J van Diest

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

BACKGROUND: Confocal laser scanning microscopy (CLSM) presents the opportunity to perform three-dimensional (3D) DNA content measurements on intact cells in thick histological sections. So far, these measurements have been performed manually, which is quite time-consuming.

METHODS: In this study, an intuitive contour-based segmentation algorithm for automatic 3D CLSM image cytometry of nuclei in thick histological sections is presented. To evaluate the segmentation algorithm, we measured the DNA content and volume of human liver and breast cancer nuclei in 3D CLSM images.

RESULTS: A high percentage of nuclei could be segmented fully automatically (e.g., human liver, 92%). Comparison with (time-consuming) interactive measurements on the same CLSM images showed that the results were well correlated (liver, r = 1.00; breast, r = 0.92).

CONCLUSIONS: Automatic 3D CLSM image cytometry enables measurement of volume and DNA content of large numbers of nuclei in thick histological sections within an acceptable time. This makes large-scale studies feasible, whereby the advantages of CLSM can be exploited fully. The intuitive modular segmentation algorithm presented in this study detects and separates overlapping objects, also in two-dimensional (2D) space. Therefore, this algorithm may also be suitable for other applications.

Original languageEnglish
Pages (from-to)12-21
Number of pages10
JournalCytometry Part B. Clinical Cytometry
Volume49
Issue number1
DOIs
Publication statusPublished - 1 Sep 2002

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