Cited by 75Radiomics and Machine Learning in Medical ImagingImage Retrieval and Classification TechniquesRadiology practices and education

The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.

The effect of preprocessing filters on predictive performance in radiomics

Open access
Demircioğlu, Aydin·2022·European Radiology Experimental

Abstract

Background: Radiomics is a noninvasive method using machine learning to support personalised medicine. Preprocessing filters such as wavelet and Laplacian-of-Gaussian filters are commonly used being thought to increase predictive performance. However, the use of preprocessing filters increases the number of features by up to an order of magnitude and can produce many correlated features. Both substantially increase the dataset complexity, which in turn makes modeling with machine learning techniques more challenging, possibly leading to poorer performance. We investigated the impact of these filters on predictive performance. Methods: Using seven publicly available radiomic datasets, we measured the impact of adding features preprocessed with eight different preprocessing filters to the unprocessed features on the predictive performance of radiomic models. Modeling was performed using five feature selection methods and five classifiers, while predictive performance was measured using area-under-the-curve at receiver operating characteristics analysis (AUC-ROC) with nested, stratified 10-fold cross-validation. Results: Significant improvements of up to 0.08 in AUC-ROC were observed when all image preprocessing filters were applied compared to using only the original features (up to p = 0.024). Decreases of -0.04 and -0.10 were observed on some data sets, but these were not statistically significant ( p > 0.179). Tuning of the image preprocessing filters did not result in decreases in AUC-ROC but further improved results by up to 0.1; however, these improvements were not statistically significant ( p > 0.086) except for one data set ( p = 0.023). Conclusions: Preprocessing filters can have a significant impact on the predictive performance and should be used in radiomic studies.

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Crossref · 10.1186/s41747-022-00294-w

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  • Some studies reported that use of pre-processing image filters improved predictive performance of models.

    “Previously, some studies reported the use of pre-processing image filters was shown to improve predictive performance of models [47, 48].”
  • When datasets are small, limiting analysis to radiomic features from the original image only showed similar results to when all radiomic features with image filters were included.

    “However, when datasets are small, limiting the analysis to radiomic features from the original image only showed similar results to when all radiomic features with image filters were included [47].”

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Research works printed but not linked: 3

  1. Guyon I, Elisseeff A (2003) An introduction to variable and feature selection. J Mach Learn Res 3:1157–1182
  2. Fave X, Zhang L, Yang J et al (2016) Impact of image preprocessing on the volume dependence and prognostic potential of radiomics features in non-small cell lung cancer. Transl Cancer Res 5. https://doi.org/10.21037/8709 · DOI
  3. Pedregosa F, Varoquaux G, Gramfort A et al (2011) Scikit-learn: machine learning in Python. J Mach Learn Res 12:2825–2830

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Metadata

Authors
Demircioğlu, A.
Venue
European Radiology Experimental
Published
2022-09-01
Volume
6
Issue
1
Pages
40-40
ISSN
2509-9280 (ISSN-L)
OpenAlex
W4294123628
Cited by
75
References
26
Citations by year
2026: 14 · 2025: 18 · 2024: 28 · 2023: 14 · 2022: 1
FWCI
8.67
Type
journal article
Language
en
Open access
Locations
  • European Radiology Experimental (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Universitätsbibliographie, Universität Duisburg-Essen (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • DuEPublico (University of Duisburg-Essen) (submittedVersion, cc-by)
Funders
Universitätsklinikum Essen
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 › Radiology, Nuclear Medicine and Imaging › Radiology practices and education
Keywords
radiomics, wavelet filters, Laplacian of Gaussian, predictive performance, feature selection, feature correlation, filter tuning, radiomic feature extraction
MeSH terms
Machine Learning, ROC Curve

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