Estimating the Volume of Nodules and Masses on Serial Chest Radiography Using a Deep-Learning-Based Automatic Detection Algorithm: A Preliminary Study

Background: The purpose of this study was to assess the volume of the pulmonary nodules and masses on serial chest X-rays (CXRs) from deep-learning-based automatic detection algorithm (DLAD)-based parameters. Methods: In a retrospective single-institutional study, 72 patients, who obtained serial CX...

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Main Authors: Chae Young Lim, Yoon Ki Cha, Myung Jin Chung, Subin Park, Soyoung Park, Jung Han Woo, Jong Hee Kim
Format: Article
Language:English
Published: MDPI AG 2023-06-01
Series:Diagnostics
Subjects:
Online Access:https://www.mdpi.com/2075-4418/13/12/2060
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author Chae Young Lim
Yoon Ki Cha
Myung Jin Chung
Subin Park
Soyoung Park
Jung Han Woo
Jong Hee Kim
author_facet Chae Young Lim
Yoon Ki Cha
Myung Jin Chung
Subin Park
Soyoung Park
Jung Han Woo
Jong Hee Kim
author_sort Chae Young Lim
collection DOAJ
description Background: The purpose of this study was to assess the volume of the pulmonary nodules and masses on serial chest X-rays (CXRs) from deep-learning-based automatic detection algorithm (DLAD)-based parameters. Methods: In a retrospective single-institutional study, 72 patients, who obtained serial CXRs (<i>n</i> = 147) for pulmonary nodules or masses with corresponding chest CT images as the reference standards, were included. A pre-trained DLAD based on a convolutional neural network was developed to detect and localize nodules using 13,710 radiographs and to calculate a localization map and the derived parameters (e.g., the area and mean probability value of pulmonary nodules) for each CXR, including serial follow-ups. For validation, reference 3D CT volumes were measured semi-automatically. Volume prediction models for pulmonary nodules were established through univariable or multivariable, and linear or non-linear regression analyses with the parameters. A polynomial regression analysis was performed as a method of a non-linear regression model. Results: Of the 147 CXRs and 208 nodules of 72 patients, the mean volume of nodules or masses was measured as 9.37 ± 11.69 cm<sup>3</sup> (mean ± standard deviation). The area and CT volume demonstrated a linear correlation of moderate strength (i.e., R = 0.58, RMSE: 9449.9 mm<sup>3</sup> m<sup>3</sup> in a linear regression analysis). The area and mean probability values exhibited a strong linear correlation (R = 0.73). The volume prediction performance based on a multivariable regression model was best with a mean probability and unit-adjusted area (i.e., RMSE: 7975.6 mm<sup>3</sup>, the smallest among the other variable parameters). Conclusions: The prediction model with the area and the mean probability based on the DLAD showed a rather accurate quantitative estimation of pulmonary nodule or mass volume and the change in serial CXRs.
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spelling doaj.art-42928d9315cf48a3bc9f34deadb80fea2023-11-18T10:00:32ZengMDPI AGDiagnostics2075-44182023-06-011312206010.3390/diagnostics13122060Estimating the Volume of Nodules and Masses on Serial Chest Radiography Using a Deep-Learning-Based Automatic Detection Algorithm: A Preliminary StudyChae Young Lim0Yoon Ki Cha1Myung Jin Chung2Subin Park3Soyoung Park4Jung Han Woo5Jong Hee Kim6Department of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of KoreaDepartment of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of KoreaDepartment of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of KoreaDepartment of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Suwon 16419, Republic of KoreaDepartment of Health Sciences and Technology, SAIHST, Sungkyunkwan University, Suwon 16419, Republic of KoreaDepartment of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of KoreaDepartment of Radiology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of KoreaBackground: The purpose of this study was to assess the volume of the pulmonary nodules and masses on serial chest X-rays (CXRs) from deep-learning-based automatic detection algorithm (DLAD)-based parameters. Methods: In a retrospective single-institutional study, 72 patients, who obtained serial CXRs (<i>n</i> = 147) for pulmonary nodules or masses with corresponding chest CT images as the reference standards, were included. A pre-trained DLAD based on a convolutional neural network was developed to detect and localize nodules using 13,710 radiographs and to calculate a localization map and the derived parameters (e.g., the area and mean probability value of pulmonary nodules) for each CXR, including serial follow-ups. For validation, reference 3D CT volumes were measured semi-automatically. Volume prediction models for pulmonary nodules were established through univariable or multivariable, and linear or non-linear regression analyses with the parameters. A polynomial regression analysis was performed as a method of a non-linear regression model. Results: Of the 147 CXRs and 208 nodules of 72 patients, the mean volume of nodules or masses was measured as 9.37 ± 11.69 cm<sup>3</sup> (mean ± standard deviation). The area and CT volume demonstrated a linear correlation of moderate strength (i.e., R = 0.58, RMSE: 9449.9 mm<sup>3</sup> m<sup>3</sup> in a linear regression analysis). The area and mean probability values exhibited a strong linear correlation (R = 0.73). The volume prediction performance based on a multivariable regression model was best with a mean probability and unit-adjusted area (i.e., RMSE: 7975.6 mm<sup>3</sup>, the smallest among the other variable parameters). Conclusions: The prediction model with the area and the mean probability based on the DLAD showed a rather accurate quantitative estimation of pulmonary nodule or mass volume and the change in serial CXRs.https://www.mdpi.com/2075-4418/13/12/2060pulmonary noduleschest X-raysdeep-learningconvolutional neural networksvolume estimation
spellingShingle Chae Young Lim
Yoon Ki Cha
Myung Jin Chung
Subin Park
Soyoung Park
Jung Han Woo
Jong Hee Kim
Estimating the Volume of Nodules and Masses on Serial Chest Radiography Using a Deep-Learning-Based Automatic Detection Algorithm: A Preliminary Study
Diagnostics
pulmonary nodules
chest X-rays
deep-learning
convolutional neural networks
volume estimation
title Estimating the Volume of Nodules and Masses on Serial Chest Radiography Using a Deep-Learning-Based Automatic Detection Algorithm: A Preliminary Study
title_full Estimating the Volume of Nodules and Masses on Serial Chest Radiography Using a Deep-Learning-Based Automatic Detection Algorithm: A Preliminary Study
title_fullStr Estimating the Volume of Nodules and Masses on Serial Chest Radiography Using a Deep-Learning-Based Automatic Detection Algorithm: A Preliminary Study
title_full_unstemmed Estimating the Volume of Nodules and Masses on Serial Chest Radiography Using a Deep-Learning-Based Automatic Detection Algorithm: A Preliminary Study
title_short Estimating the Volume of Nodules and Masses on Serial Chest Radiography Using a Deep-Learning-Based Automatic Detection Algorithm: A Preliminary Study
title_sort estimating the volume of nodules and masses on serial chest radiography using a deep learning based automatic detection algorithm a preliminary study
topic pulmonary nodules
chest X-rays
deep-learning
convolutional neural networks
volume estimation
url https://www.mdpi.com/2075-4418/13/12/2060
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