Cited by 69Radiomics and Machine Learning in Medical ImagingImage Retrieval and Classification TechniquesAdrenal and Paraganglionic Tumors

Characterization of adrenal lesions on unenhanced MRI using texture analysis: a machine-learning approach

Romeo, Valeria, Maurea, Simone, Cuocolo, Renato, Petretta, Mario, Mainenti, Pier Paolo, Verde, Francesco, Coppola, Milena, Dell'Aversana, Serena +1 more·2018·Journal of Magnetic Resonance Imaging

Abstract

Background Adrenal adenomas (AA) are the most common benign adrenal lesions, often characterized based on intralesional fat content as either lipid‐rich (LRA) or lipid‐poor (LPA). The differentiation of AA, particularly LPA, from nonadenoma adrenal lesions (NAL) may be challenging. Texture analysis (TA) can extract quantitative parameters from MR images. Machine learning is a technique for recognizing patterns that can be applied to medical images by identifying the best combination of TA features to create a predictive model for the diagnosis of interest. Purpose/Hypothesis To assess the diagnostic efficacy of TA‐derived parameters extracted from MR images in characterizing LRA, LPA, and NAL using a machine‐learning approach. Study Type Retrospective, observational study. Population/Subjects/Phantom/Specimen/Animal Model Sixty MR examinations, including 20 LRA, 20 LPA, and 20 NAL. Field Strength/Sequence Unenhanced T1‐weighted in‐phase (IP) and out‐of‐phase (OP) as well as T2‐weighted (T2‐w) MR images acquired at 3T. Assessment Adrenal lesions were manually segmented, placing a spherical volume of interest on IP, OP, and T2‐w images. Different selection methods were trained and tested using the J48 machine‐learning classifiers. Statistical Tests The feature selection method that obtained the highest diagnostic performance using the J48 classifier was identified; the diagnostic performance was also compared with that of a senior radiologist by means of McNemar's test. Results A total of 138 TA‐derived features were extracted; among these, four features were selected, extracted from the IP (Short_Run_High_Gray_Level_Emphasis), OP (Mean_Intensity and Maximum_3D_Diameter), and T2‐w (Standard_Deviation) images; the J48 classifier obtained a diagnostic accuracy of 80%. The expert radiologist obtained a diagnostic accuracy of 73%. McNemar's test did not show significant differences in terms of diagnostic performance between the J48 classifier and the expert radiologist. Data Conclusion Machine learning conducted on MR TA‐derived features is a potential tool to characterize adrenal lesions. Level of Evidence: 4 Technical Efficacy: Stage 2 J. Magn. Reson. Imaging 2018.

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  • At present, there is insufficient evidence to support clinical translation of textural analysis and machine learning techniques for adrenal lesions.

    “At present, there is insufficient evidence to support clinical translation, but these techniques have the potential to improve diagnostic accuracy and more informed decision making in the future.”

    From Adrenal incidentaloma (2020) · cites this paper as [383]

  • Early data evaluating textural analysis-derived parameters extracted from MRI of adrenal lesions in 60 patients using machine learning showed a diagnostic accuracy of 80% compared to expert radiologist accuracy of 73%.

    “Early data evaluating the efficacy of textural analysis-derived parameters extracted from MRI of adrenal lesions in 60 patients using a machine learning approach showed a diagnostic accuracy of 80% compared to expert radiologist accuracy of 73% (383).”

    From Adrenal incidentaloma (2020) · cites this paper as [383]

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Authors
Romeo, V., Maurea, S., Cuocolo, R., Petretta, M., Mainenti, P. P., Verde, F., Coppola, M., Dell'Aversana, S., & Brunetti, A.
Affiliations
  • University of Naples Federico II (IT)
  • Institute of Biostructure and Bioimaging (IT)
  • Department of Advanced Biomedical Sciences University of Naples “Federico II,” Naples Italy
Corresponding author
Cuocolo, Renato
Venue
Journal of Magnetic Resonance Imaging
Publisher
Wiley
Published
2018-01-17
Volume
48
Issue
1
Pages
198-204
ISSN
  • 1053-1807 (ISSN-L)
  • 1522-2586
OpenAlex
W2793377787
Cited by
69
References
24
Citations by year
2026: 1 · 2025: 8 · 2024: 1 · 2023: 6 · 2022: 12 · 2021: 8 · 2020: 14 · 2019: 18 · 2018: 1
FWCI
7.07
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Magnetic Resonance Imaging (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Radiomics and Machine Learning in Medical Imaging
  • Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Image Retrieval and Classification Techniques
  • Health Sciences › Medicine › Surgery › Adrenal and Paraganglionic Tumors
Keywords
adrenal adenoma, adrenal mass, texture analysis, non-contrast MRI, in-phase and out-of-phase imaging, T2-weighted imaging, J48 classifier, feature selection, computer-aided diagnosis
MeSH terms
Machine Learning, Adenoma, Adolescent, Adrenal Gland Neoplasms, Adrenal Glands, Adult, Aged, Algorithms, Contrast Media, Female, Humans, Image Interpretation, Computer-Assisted, Image Processing, Computer-Assisted, Lipids, Magnetic Resonance Imaging, Male, Middle Aged, Pattern Recognition, Automated, Retrospective Studies, Reproducibility of Results, Young Adult

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