Journal
RADIOTHERAPY AND ONCOLOGY
Volume 127, Issue 3, Pages 349-360Publisher
ELSEVIER IRELAND LTD
DOI: 10.1016/j.radonc.2018.03.033
Keywords
Radiomics; Neoplasms; Biology
Funding
- ERC advanced grant (ERC-ADG-2015) [694812]
- QuIC-ConCePT project - EFPI A companies
- Innovative Medicine Initiative Joint Undertaking (IMI JU) [115151]
- Dutch Technology Foundation STW, NWO [10696 DuCAT, P14-19]
- Technology Programme of the Ministry of Economic Affairs
- EU [257144, 601826, 673780]
- EUROSTARS (DART)
- EUROSTARS (DECIDE)
- EUROSTARS (COMPACT)
- European Program H2020-2015-17 [PHC30-689715, 733008, 766276]
- Interreg V-A Euregio Meuse-Rhine (Euradiomics)
- Kankeronderzoekfonds Limburg from the Health Foundation Limburg
- Dutch Cancer Society
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Introduction: In this review we describe recent developments in the field of radiomics along with current relevant literature linking it to tumor biology. We furthermore explore the methodologic quality of these studies with our in-house radiomics quality scoring (RQS) tool. Finally, we offer our vision on necessary future steps for the development of stable radiomic features and their links to tumor biology. Methods: Two authors (S.S. and H.W.) independently performed a thorough systematic literature search and outcome extraction to identify relevant studies published in MEDLINE/PubMed (National Center for Biotechnology Information, NCBI), EMBASE (Ovid) and Web of Science (WoS). Two authors (S.S, H.W) separately and two authors (J.v.T and E.d.J) concordantly scored the articles for their methodology and analyses according to the previously published radiomics quality score (RQS). Results: In summary, a total of 655 records were identified till 25-09-2017 based on the previously specified search terms, from which n = 236 in MEDLINE/PubMed, n = 215 in EMBASE and n = 204 from Web of Science. After determining full article availability and reading the available articles, a total of n = 41 studies were included in the systematic review. The RQS scoring resulted in some discrepancies between the reviewers, e.g. reviewer H.W scored 4 studies >= 50%, reviewer S.S scored 3 studies >= 50% while reviewers J.v.T and E.d.J scored 1 study >= 50%. Up to nine studies were given a quality score of 0%. The majority of studies were scored below 50%. Discussion: In this study, we performed a systematic literature search linking radiomics to tumor biology. All but two studies (n = 39) revealed that radiomic features derived from ultrasound, CT, PET and/or MR are significantly associated with one or several specific tumor biologic substrates, from somatic mutation status to tumor histopathologic grading and metabolism. Considerable inter-observer differences were found with regard to RQS scoring, while important questions were raised concerning the interpretability of the outcome of such scores. (C) 2018 The Author(s). Published by Elsevier B.V. Radiotherapy and Oncology 127 (2018) 349-360This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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