Volume 16, Issue 6 e202200382
RESEARCH ARTICLE

Prostate cancer tissue classification by multiphoton imaging, automated image analysis and machine learning

Egleidson F. A. Gomes

Egleidson F. A. Gomes

Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil

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Eduardo Paulino Junior

Eduardo Paulino Junior

Departamento de Anatomia Patológica e Medicina Legal, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil

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Mário F. R. de Lima

Mário F. R. de Lima

Laboratório Analys Patologia, Belo Horizonte, MG, Brazil

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Luana A. Reis

Luana A. Reis

Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil

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Giovanna Paranhos

Giovanna Paranhos

Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil

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Marcelo Mamede

Marcelo Mamede

Departamento Anatomia e Imagem, Faculdade de Medicina, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil

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Francis G. J. Longford

Francis G. J. Longford

University of Southampton, Southampton, UK

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Jeremy G. Frey

Jeremy G. Frey

University of Southampton, Southampton, UK

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Ana Maria de Paula

Corresponding Author

Ana Maria de Paula

Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil

Correspondence

Ana Maria de Paula, Departamento de Física, Instituto de Ciências Exatas, Universidade Federal de Minas Gerais, 31270-901 Belo Horizonte, MG, Brazil.

Email: [email protected]

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First published: 20 February 2023
Citations: 1

Abstract

Prostate carcinoma, a slow-growing and often indolent tumour, is the second most commonly diagnosed cancer among men worldwide. The prognosis is mainly based on the Gleason system through prostate biopsy analysis. However, new treatment and monitoring strategies depend on a more precise diagnosis. Here, we present results by multiphoton imaging for prostate tumour samples from 120 patients that allow to obtain quantitative parameters leading to specific tumour aggressiveness signatures. An automated image analysis was developed to recognise and quantify stromal fibre and neoplastic cell regions in each image. The set of metrics was able to distinguish between non-neoplastic tissue and carcinoma areas by linear discriminant analysis and random forest with accuracy of 89% ± 3%, but between Gleason groups of only 46% ± 6%. The reactive stroma analysis improved the accuracy to 65% ± 5%, clearly demonstrating that stromal parameters should be considered as additional criteria for a more accurate diagnosis.image

CONFLICT OF INTEREST STATEMENT

The authors declare no potential conflicts of interest.

DATA AVAILABILITY STATEMENT

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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