The use of spectrograms improves the classification of wheezes and crackles in an educational setting

Abstract Chest auscultation is a widely used method in the diagnosis of lung diseases. However, the interpretation of lung sounds is a subjective task and disagreements arise. New technological developments like the use of visSual representation of sounds through spectrograms could improve the agree...

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Autores principales:	J. C. Aviles-Solis, I. Storvoll, Sophie Vanbelle, H. Melbye
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6bd738086c0349eba422d297057c8c48
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spelling	oai:doaj.org-article:6bd738086c0349eba422d297057c8c482021-12-02T14:59:12ZThe use of spectrograms improves the classification of wheezes and crackles in an educational setting10.1038/s41598-020-65354-w2045-2322https://doaj.org/article/6bd738086c0349eba422d297057c8c482020-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-65354-whttps://doaj.org/toc/2045-2322Abstract Chest auscultation is a widely used method in the diagnosis of lung diseases. However, the interpretation of lung sounds is a subjective task and disagreements arise. New technological developments like the use of visSual representation of sounds through spectrograms could improve the agreement when classifying lung sounds, but this is not yet known. In this study, we tested if the use of spectrograms improves the agreement when classifying wheezes and crackles. To do this, we asked twenty-three medical students at UiT the Arctic University of Norway to classify 30 lung sounds recordings for the presence of wheezes and crackles. The sample contained 15 normal recordings and 15 with wheezes or crackles. The students classified the recordings in a random order twice. First sound only, then sound with spectrograms. We calculated kappa values for the agreement between each student and the expert classification with and without display of spectrograms and tested for significant improvement between these two coefficients. We also calculated Fleiss kappa for the 23 observers with and without the spectrogram. In an individual analysis comparing each student to an expert annotated reference standard we found that 13 out of 23 students had a positive change in kappa when classifying wheezes with the help of spectrograms. When classifying crackles 16 out of 23 showed improvement when spectrograms were used. In a group analysis we observed that Fleiss kappa values were k = 0.51 and k = 0.56 (p = 0.63) for classifying wheezes without and with spectrograms. For crackles, these values were k = 0.22 and k = 0.40 (p = <0.01) in the same order. Thus, we conclude that the use of spectrograms had a positive impact on the inter-rater agreement and the agreement with experts. We observed a higher improvement in the classification of crackles compared to wheezes.J. C. Aviles-SolisI. StorvollSophie VanbelleH. MelbyeNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q J. C. Aviles-Solis I. Storvoll Sophie Vanbelle H. Melbye The use of spectrograms improves the classification of wheezes and crackles in an educational setting
description	Abstract Chest auscultation is a widely used method in the diagnosis of lung diseases. However, the interpretation of lung sounds is a subjective task and disagreements arise. New technological developments like the use of visSual representation of sounds through spectrograms could improve the agreement when classifying lung sounds, but this is not yet known. In this study, we tested if the use of spectrograms improves the agreement when classifying wheezes and crackles. To do this, we asked twenty-three medical students at UiT the Arctic University of Norway to classify 30 lung sounds recordings for the presence of wheezes and crackles. The sample contained 15 normal recordings and 15 with wheezes or crackles. The students classified the recordings in a random order twice. First sound only, then sound with spectrograms. We calculated kappa values for the agreement between each student and the expert classification with and without display of spectrograms and tested for significant improvement between these two coefficients. We also calculated Fleiss kappa for the 23 observers with and without the spectrogram. In an individual analysis comparing each student to an expert annotated reference standard we found that 13 out of 23 students had a positive change in kappa when classifying wheezes with the help of spectrograms. When classifying crackles 16 out of 23 showed improvement when spectrograms were used. In a group analysis we observed that Fleiss kappa values were k = 0.51 and k = 0.56 (p = 0.63) for classifying wheezes without and with spectrograms. For crackles, these values were k = 0.22 and k = 0.40 (p = <0.01) in the same order. Thus, we conclude that the use of spectrograms had a positive impact on the inter-rater agreement and the agreement with experts. We observed a higher improvement in the classification of crackles compared to wheezes.
format	article
author	J. C. Aviles-Solis I. Storvoll Sophie Vanbelle H. Melbye
author_facet	J. C. Aviles-Solis I. Storvoll Sophie Vanbelle H. Melbye
author_sort	J. C. Aviles-Solis
title	The use of spectrograms improves the classification of wheezes and crackles in an educational setting
title_short	The use of spectrograms improves the classification of wheezes and crackles in an educational setting
title_full	The use of spectrograms improves the classification of wheezes and crackles in an educational setting
title_fullStr	The use of spectrograms improves the classification of wheezes and crackles in an educational setting
title_full_unstemmed	The use of spectrograms improves the classification of wheezes and crackles in an educational setting
title_sort	use of spectrograms improves the classification of wheezes and crackles in an educational setting
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/6bd738086c0349eba422d297057c8c48
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The use of spectrograms improves the classification of wheezes and crackles in an educational setting

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