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Radiomics based on enhanced CT for differentiating between pulmonary tuberculosis and pulmonary adenocarcinoma presenting as solid nodules or masses

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Abstract

Purpose

To investigate the incremental value of enhanced CT-based radiomics in discriminating between pulmonary tuberculosis (PTB) and pulmonary adenocarcinoma (PAC) presenting as solid nodules or masses and to develop an optimal radiomics model.

Methods

A total of 128 lesions (from 123 patients) from three hospitals were retrospectively analyzed and were randomly divided into training and test datasets at a ratio of 7:3. Independent predictors in subjective image features were used to develop the subjective image model (SIM). The plain CT-based and enhanced CT-based radiomics features were screened by the correlation coefficient method, univariate analysis, and the least absolute shrinkage and selection operator, then used to build the plain CT radiomics model (PRM) and enhanced CT radiomics model (ERM), respectively. Finally, the combined model (CM) combining PRM and ERM was established. In addition, the performance of three radiologists and one respiratory physician was evaluated. The areas under the receiver operating characteristic curve (AUCs) were used to assess the performance of each model.

Results

The differential diagnostic capability of the ERM (training: AUC = 0.933; test: AUC = 0.881) was better than that of the PRM (training: AUC = 0.861; test: AUC = 0.756) and the SIM (training: AUC = 0.760; test: AUC = 0.611). The CM was optimal (training: AUC = 0.948; test: AUC = 0.917) and outperformed the respiratory physician and most radiologists.

Conclusions

The ERM was more helpful than the PRM for identifying PTB and PAC that present as solid nodules or masses, and the CM was the best.

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Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

Abbreviations

PTB:

Pulmonary tuberculosis

PAC:

Pulmonary adenocarcinoma

VOIs:

Volumes of interest

GLCM:

Gray-level co-occurrence matrix

GLDM:

Gray-level dependence matrix

GLRLM:

Gray-level run-length matrix

GLSZM:

Gray-level size zone matrix

NGTDM:

Neighboring gray-tone difference matrix

ICC:

Inter- and intra-class correlation coefficients

LASSO:

Least absolute shrinkage and selection operator

SIM:

Subjective image model

PRM:

Plain CT radiomics model

ERM:

Enhanced CT radiomics model

CM:

Combined model

LR:

Logistic regression

RF:

Random forest

SVM:

Support vector machine

DT:

Decision tree

KNN:

K-nearest neighbor

ROC:

Receiver operating characteristic

AUC:

Area under the receiver operator characteristic curve

OR:

Odds ratio

CI:

Confidence interval

TRIPOD:

Transparent reporting of a multivariable prediction model for individual prognosis or diagnosis

References

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Funding

The authors declare that no funds, grants, or other support were received during the preparation of this manuscript.

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Authors and Affiliations

Authors

Contributions

WZ and ZX: Conceptualization, Methodology, Investigation, Data Curation, Writing—Original Draft. YJ: Methodology, Investigation. KW, XL, and DQ: Resources, Data Curation. MZ: Software, Visualization, Formal analysis. AL: Resources. ZL: Conceptualization, Investigation, Writing—Review and Editing, Supervision, Project administration. All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Dongxue Qin or Zhiyong Li.

Ethics declarations

Competing interests

The authors declare no competing interests.

Conflict of interest

The authors have no relevant financial or non-financial interests to disclose.

Ethical approval

Approval was obtained from the Ethics Committee of the First Affiliated Hospital of Dalian Medical University, the Ethics Committee of the Second Hospital of Dalian Medical University, and Dalian Public Health Clinical Center Ethics Committee. The procedures used in this study adhere to the tenets of the Declaration of Helsinki.

Consent to participate

Since this study was a retrospective study, the Ethics Committee of the First Affiliated Hospital of Dalian Medical University, the Ethics Committee of the Second Hospital of Dalian Medical University, and the Dalian Public Health Clinical Center Ethics Committee waived the need to obtain informed consent from the patients.

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Zhao, W., Xiong, Z., Jiang, Y. et al. Radiomics based on enhanced CT for differentiating between pulmonary tuberculosis and pulmonary adenocarcinoma presenting as solid nodules or masses. J Cancer Res Clin Oncol 149, 3395–3408 (2023). https://doi.org/10.1007/s00432-022-04256-y

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  • DOI: https://doi.org/10.1007/s00432-022-04256-y

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