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METhodological RadiomICs Score (METRICS): a quality scoring tool for radiomics research endorsed by EuSoMII

  • Burak Kocak
  • , Tugba Akinci D’Antonoli
  • , Nathaniel Mercaldo
  • , Angel Alberich-Bayarri
  • , Bettina Baessler
  • , Ilaria Ambrosini
  • , Anna E. Andreychenko
  • , Spyridon Bakas
  • , Regina G.H. Beets-Tan
  • , Keno Bressem
  • , Irene Buvat
  • , Roberto Cannella
  • , Luca Alessandro Cappellini
  • , Armando Ugo Cavallo
  • , Leonid L. Chepelev
  • , Linda Chi Hang Chu
  • , Aydin Demircioglu
  • , Nandita M. deSouza
  • , Matthias Dietzel
  • , Salvatore Claudio Fanni
  • Andrey Fedorov, Laure S. Fournier, Valentina Giannini, Rossano Girometti, Kevin B.W. Groot Lipman, Georgios Kalarakis, Brendan S. Kelly, Michail E. Klontzas, Dow Mu Koh, Elmar Kotter, Ho Yun Lee, Mario Maas, Luis Marti-Bonmati, Henning Müller, Nancy Obuchowski, Fanny Orlhac, Nikolaos Papanikolaou, Ekaterina Petrash, Elisabeth Pfaehler, Daniel Pinto dos Santos, Andrea Ponsiglione, Sebastià Sabater, Francesco Sardanelli, Philipp Seeböck, Nanna M. Sijtsema, Arnaldo Stanzione, Alberto Traverso, Lorenzo Ugga, Martin Vallières, Lisanne V. van Dijk, Joost J.M. van Griethuysen, Robbert W. van Hamersvelt, Peter van Ooijen, Federica Vernuccio, Alan Wang, Stuart Williams, Jan Witowski, Zhongyi Zhang, Alex Zwanenburg, Renato Cuocolo
  • University of Health Sciences
  • Kantonsspital Liestal
  • Massachusetts General Hospital
  • Quantitative Imaging Biomarkers in Medicine (QUIBIM)
  • University of Würzburg
  • University of Pisa
  • St. Petersburg National Research University of Information Technologies, Mechanics and Optics (ITMO)
  • Indiana University-Purdue University Indianapolis
  • Netherlands Cancer Institute
  • Maastricht University
  • University of Southern Denmark
  • Charité – Universitätsmedizin Berlin
  • Berlin Institute of Health (BIH) and Charité - Universitätsmedizin Berlin
  • Institut Curie
  • University of Palermo
  • Humanitas University
  • IRCCS Istituto Dermopatico dell'Immacolata - Roma
  • University Health Network
  • Johns Hopkins University
  • University of Duisburg-Essen
  • Institute of Cancer Research
  • Royal Marsden NHS Foundation Trust
  • Friedrich-Alexander University Erlangen-Nürnberg
  • Harvard University
  • Rene Descartes University Paris
  • University of Turin
  • University of Udine
  • Karolinska Institutet
  • University of Crete
  • University College Dublin
  • UCD
  • Heraklion University Hospital
  • Foundation for Research and Technology-Hellas
  • University of Freiburg
  • University of Amsterdam
  • Hospital Universitario La Fe
  • University of Applied Sciences of Western Switzerland (HES-SO Valais)
  • University of Geneva
  • Cleveland Clinic Foundation
  • Champalimaud Foundation
  • Russian Ministry of Health
  • Medical Department IRA-Labs
  • Jülich Research Centre
  • University of Cologne
  • Goethe University Frankfurt
  • University of Naples Federico II
  • Complejo Hospitalario Universitario de Albacete
  • University of Milan
  • IRCCS Policlinico San Donato
  • Medical University of Vienna
  • University of Groningen
  • Maastricht Radiation Oncology Clinic
  • Vita-Salute San Raffaele University
  • Université de Sherbrooke
  • CHUS - Hôpital Fleurimont
  • Utrecht University
  • The University of Auckland
  • Norfolk and Norwich University Hospitals NHS Foundation Trust
  • New York University
  • Griffith University Queensland
  • National Center for Tumor Diseases (NCT/UCC)
  • Technische Universität Dresden
  • German Cancer Research Center
  • University of Salerno

Research output: Contribution to journalArticlepeer-review

Abstract

Purpose: To propose a new quality scoring tool, METhodological RadiomICs Score (METRICS), to assess and improve research quality of radiomics studies. Methods: We conducted an online modified Delphi study with a group of international experts. It was performed in three consecutive stages: Stage#1, item preparation; Stage#2, panel discussion among EuSoMII Auditing Group members to identify the items to be voted; and Stage#3, four rounds of the modified Delphi exercise by panelists to determine the items eligible for the METRICS and their weights. The consensus threshold was 75%. Based on the median ranks derived from expert panel opinion and their rank-sum based conversion to importance scores, the category and item weights were calculated. Result: In total, 59 panelists from 19 countries participated in selection and ranking of the items and categories. Final METRICS tool included 30 items within 9 categories. According to their weights, the categories were in descending order of importance: study design, imaging data, image processing and feature extraction, metrics and comparison, testing, feature processing, preparation for modeling, segmentation, and open science. A web application and a repository were developed to streamline the calculation of the METRICS score and to collect feedback from the radiomics community. Conclusion: In this work, we developed a scoring tool for assessing the methodological quality of the radiomics research, with a large international panel and a modified Delphi protocol. With its conditional format to cover methodological variations, it provides a well-constructed framework for the key methodological concepts to assess the quality of radiomic research papers. Critical relevance statement: A quality assessment tool, METhodological RadiomICs Score (METRICS), is made available by a large group of international domain experts, with transparent methodology, aiming at evaluating and improving research quality in radiomics and machine learning. Key points: • A methodological scoring tool, METRICS, was developed for assessing the quality of radiomics research, with a large international expert panel and a modified Delphi protocol. • The proposed scoring tool presents expert opinion-based importance weights of categories and items with a transparent methodology for the first time. • METRICS accounts for varying use cases, from handcrafted radiomics to entirely deep learning-based pipelines. • A web application has been developed to help with the calculation of the METRICS score (https://metricsscore.github.io/metrics/METRICS.html) and a repository created to collect feedback from the radiomics community (https://github.com/metricsscore/metrics). Graphical Abstract: [Figure not available: see fulltext.]

Original languageEnglish
Article number8
JournalInsights into Imaging
Volume15
Issue number1
DOIs
StatePublished - 17 Jan 2024

Keywords

  • Artificial intelligence
  • Deep learning
  • Guideline
  • Machine learning
  • Radiomics

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