Local isotropic phase symmetry measure for detection of beta cells and lymphocytes - PubMed (original) (raw)

Local isotropic phase symmetry measure for detection of beta cells and lymphocytes

Manohar Kuse et al. J Pathol Inform. 2011.

Abstract

Diabetes can be associated with a reduction in functional β cell mass, which must be restored if the disease is to be cured or progress is to be arrested. To study the cell count, it is also necessary to determine the number of nuclei within the insulin stained area. It can take a single experimentalist several months to complete a single study of this kind, results of which may still be quite subjective. In this paper, we propose a framework based on a novel measure of local symmetry for detection of cells. The local isotropic phase symmetry measure (LIPSyM) is designed to give high values at or near the cell centers. We demonstrate the effectiveness of our algorithm for detection of two types of specific cells in histology images, cells in mouse pancreatic sections and lymphocytes in human breast tissue. Experimental results for these two problems show that our algorithm performs better than human experts for the former problem, and outperforms the best reported results for the latter.

Keywords: Beta cell mass assessment; cell nuclei detection; local isotropic symmetry; lymphocyte detection.

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Figures

Figure 1

Figure 1

A schematic diagram of the proposed algorithm for detection of β cells

Figure 2

Figure 2

(a) Original color image; (b) H-stain; (c) Normalized median phase energy; (d) Peaks overlayed; (e) Result after clustering; (f) Final output of the algorithm

Figure 3

Figure 3

Isotropic (red) vs. anisotropic (green) peaks of local phase symmetry

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