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Learning-based local quality assessment of reflectance confocal microscopy images for dermatology applications

Sikorska Miroslawa, Skalski Andrzej, Wodzinski Marek, Witkowski Alexander, Pellacani Giovanni, Ludzik Joanna

Biocybernetics and Biomedical Engineering

2021

Vol. 41, no. 3

880--890

Background and objective: Skin cancer is one of the most common types of cancer and its early diagnosis significantly reduces patient morbidity and mortality. Reflectance confocal microscopy (RCM) is a modern and non-invasive method of diagnosis that is becoming popular amongst clinical dermatologists. The frequent occurrence of artifacts in the images is one of the most challenging factors in making a diagnosis based on RCM. It impedes the diagnosis process for the dermatologist and makes its automation difficult. In this work, we employ artificial neural networks to propose a local quality assessment system. It allows for the detection of artifacts and non-informative component images both retrospectively or in real-time during the examination. Methods: In this research we address the quality assessment issue by proposing an artificial intelligence-based solution. 612 RCM mosaics were divided into small component images and manually classified in order to train the ResNeXt model in the quality verification context. A trained network was used to create an application that marks individual classes of the component images on the mosaic. Results: We achieved the average classification precision of 0.98 both for the validation and test data sets. In addition, we present local quality assessment statistics of the 1540 cases of skin lesions to show which types of skin lesions most often present with artifacts in their RCM images. Conclusions: In this research we investigate the utility of the deep convolution neural networks for the local quality assessment of the RCM images. We propose an AI-based system that may be effectively used as real-time support for the dermatologist during a RCM examination and as a base for the automation of the diagnostic process.

Wykorzystanie mieszanej rzeczywistości w zakresie wizualizacji obrazowych danych trójwymiarowych

Skalski Andrzej, Stanuch Maciej, Złahoda-Huzior Adriana, Kuszewski Tomasz

Inżynier i Fizyk Medyczny

2020

Vol. 9, nr 3

193--198

W artykule przedstawiono wybrane zagadnienia związane z mieszaną rzeczywistością. W szczególności skupiono się na wykorzystaniu mieszanej rzeczywistości w kontekście wizualizacji obrazowych danych medycznych. Technologia została szczegółowo omówiona oraz porównana z wirtualną i rozszerzoną rzeczywistością oraz drukiem 3D. Zaprezentowano szerokie spektrum zastosowań, m.in. wykorzystanie mieszanej rzeczywistości w szkoleniu oraz do wizualizacji danych pacjentów onkologicznych zobrazowanych w tomografii komputerowej oraz w technice PET.

This article covers the topics related to the use of the mixed reality in the field of medical data visualization. It enables the user to see the data as a 3D hologram that is a part of the users’ environment. There is a detailed comparison to the virtual and the augmented reality and the relation to the 3D printing. A wide variety of applications of the mixed reality in education and in visualization of the patients’ computed tomography and positron emission tomography data is presented.