Abstract
Objectives
Near-pure lung adenocarcinoma (ADC) subtypes demonstrate strong stratification of radiomic values, providing basic information for pathological subtyping. We sought to predict the presence of high-grade (micropapillary and solid) components in lung ADCs using quantitative image analysis with near-pure radiomic values.
Methods
Overall, 103 patients with lung ADCs of various histological subtypes were enrolled for 10-repetition, 3-fold cross-validation (cohort 1); 55 were enrolled for testing (cohort 2). Histogram and textural features on computed tomography (CT) images were assessed based on the “near-pure” pathological subtype data. Patch-wise high-grade likelihood prediction was performed for each voxel within the tumour region. The presence of high-grade components was then determined based on a volume percentage threshold of the high-grade likelihood area. To compare with quantitative approaches, consolidation/tumour (C/T) ratio was evaluated on CT images; we applied radiological invasiveness (C/T ratio > 0.5) for the prediction.
Results
In cohort 1, patch-wise prediction, combined model (C/T ratio and patch-wise prediction), whole-lesion-based prediction (using only the “near-pure”-based prediction model), and radiological invasiveness achieved a sensitivity and specificity of 88.00 ± 2.33% and 75.75 ± 2.82%, 90.00 ± 0.00%, and 77.12 ± 2.67%, 66.67% and 90.41%, and 90.00% and 45.21%, respectively. The sensitivity and specificity, respectively, for cohort 2 were 100.0% and 95.35% using patch-wise prediction, 100.0% and 95.35% using combined model, 75.00% and 95.35% using whole-lesion-based prediction, and 100.0% and 69.77% using radiological invasiveness.
Conclusion
Using near-pure radiomic features and patch-wise image analysis demonstrated high levels of sensitivity and moderate levels of specificity for high-grade ADC subtype-detecting.
Key Points
• The radiomic values extracted from lung adenocarcinoma with “near-pure” histological subtypes provide useful information for high-grade (micropapillary and solid) components detection.
• Using near-pure radiomic features and patch-wise image analysis, high-grade components of lung adenocarcinoma can be predicted with high sensitivity and moderate specificity.
• Using near-pure radiomic features and patch-wise image analysis has potential role in facilitating the prediction of the presence of high-grade components in lung adenocarcinoma prior to surgical resection.
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Abbreviations
- ADC:
-
Adenocarcinoma
- ATS:
-
American Thoracic Society
- C/T:
-
Consolidation/tumour
- ERS:
-
European Respiratory Society
- GLCM:
-
Grey level co-occurrence matrix
- GLRLM:
-
Grey level run length matrix
- GLSZM:
-
Grey level size zone matrix
- IASLC:
-
International Association for the Study of Lung Cancer
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Funding
This work was supported by the National Taiwan University Hospital, Hsin-Chu Branch, Taiwan (grant number 108-HCH061), and the Ministry of Science and Technology, Taiwan (grant number 107-2221-E-002-074-MY3, 107-2221-E-002-080-MY3).
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The scientific guarantor of this publication is Chung-Ming Chen.
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The authors of this manuscript declare no relationships with any companies whose products or services may be related to the subject matter of the article.
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No complex statistical methods were necessary for this paper.
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Written informed consent was waived by the Institutional Review Board.
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Study subjects or cohorts overlap
The “near-pure” lung adenocarcinoma subtypes data has been previously reported in LUNG CANCER 119 (2018) 56-63 [9].
Methodology
• Retrospective
• Diagnostic or prognostic study
• Performed at one institution
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Chen, LW., Yang, SM., Wang, HJ. et al. Prediction of micropapillary and solid pattern in lung adenocarcinoma using radiomic values extracted from near-pure histopathological subtypes. Eur Radiol 31, 5127–5138 (2021). https://doi.org/10.1007/s00330-020-07570-6
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DOI: https://doi.org/10.1007/s00330-020-07570-6