Comput Math Methods Med - Automated image analysis of lung branching morphogenesis from microscopic images of fetal rat explants.

Tópicos

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Resumo

CKGROUND: Regulating mechanisms of branching morphogenesis of fetal lung rat explants have been an essential tool for molecular research. This work presents a new methodology to accurately quantify the epithelial, outer contour, and peripheral airway buds of lung explants during cellular development from microscopic images.METHODS: The outer contour was defined using an adaptive and multiscale threshold algorithm whose level was automatically calculated based on an entropy maximization criterion. The inner lung epithelium was defined by a clustering procedure that groups small image regions according to the minimum description length principle and local statistical properties. Finally, the number of peripheral buds was counted as the skeleton branched ends from a skeletonized image of the lung inner epithelia.RESULTS: The time for lung branching morphometric analysis was reduced in 98% in contrast to the manual method. Best results were obtained in the first two days of cellular development, with lesser standard deviations. Nonsignificant differences were found between the automatic and manual results in all culture days.CONCLUSIONS: The proposed method introduces a series of advantages related to its intuitive use and accuracy, making the technique suitable to images with different lighting characteristics and allowing a reliable comparison between different researchers.

Resumo Limpo

ckground regul mechan branch morphogenesi fetal lung rat explant essenti tool molecular research work present new methodolog accur quantifi epitheli outer contour peripher airway bud lung explant cellular develop microscop imagesmethod outer contour defin use adapt multiscal threshold algorithm whose level automat calcul base entropi maxim criterion inner lung epithelium defin cluster procedur group small imag region accord minimum descript length principl local statist properti final number peripher bud count skeleton branch end skeleton imag lung inner epitheliaresult time lung branch morphometr analysi reduc contrast manual method best result obtain first two day cellular develop lesser standard deviat nonsignific differ found automat manual result cultur daysconclus propos method introduc seri advantag relat intuit use accuraci make techniqu suitabl imag differ light characterist allow reliabl comparison differ research

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