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Stability of MRI radiomic features according to various imaging parameters in fast scanned T2-FLAIR for acute ischemic stroke patients

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Abstract
From May 2015 to June 2016, data on 296 patients undergoing 1.5-Tesla MRI for symptoms of acute ischemic stroke were retrospectively collected. Conventional, echo-planar imaging (EPI) and echo train length (ETL)-T2-FLAIR were simultaneously obtained in 118 patients (first group), and conventional, ETL-, and repetition time (TR)-T2-FLAIR were simultaneously obtained in 178 patients (second group). A total of 595 radiomics features were extracted from one region-of-interest (ROI) reflecting the acute and chronic ischemic hyperintensity, and concordance correlation coefficients (CCC) of the radiomics features were calculated between the fast scanned and conventional T2-FLAIR for paired patients (1st group and 2nd group). Stabilities of the radiomics features were compared with the proportions of features with a CCC higher than 0.85, which were considered to be stable in the fast scanned T2-FLAIR. EPI-T2-FLAIR showed higher proportions of stable features than ETL-T2-FLAIR, and TR-T2-FLAIR also showed higher proportions of stable features than ETL-T2-FLAIR, both in acute and chronic ischemic hyperintensities of whole- and intersection masks (p < .002). Radiomics features in fast scanned T2-FLAIR showed variable stabilities according to the sequences compared with conventional T2-FLAIR. Therefore, radiomics features may be used cautiously in applications for feature analysis as their stability and robustness can be variable.
Author(s)
김민재박서영박지은이현나정승채주리히최금미
Issued Date
2021
Type
Article
Keyword
IschemiaMagnetic resonance imagingMedical imagingReproducibilityStroke
DOI
10.1038/s41598-021-96621-z
URI
https://oak.ulsan.ac.kr/handle/2021.oak/7403
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_doaj_primary_oai_doaj_org_article_2e9952f411444fc49774bd2421e6fed7&amp;context=PC&amp;vid=ULSAN&amp;lang=ko_KR&amp;search_scope=default_scope&amp;adaptor=primo_central_multiple_fe&amp;tab=default_tab&amp;query=any,contains,Stability%20of%20MRI%20radiomic%20features%20according%20to%20various%20imaging%20parameters%20in%20fast%20scanned%20T2-FLAIR%20for%20acute%20ischemic%20stroke%20patients&amp;offset=0&amp;pcAvailability=true
Publisher
SCIENTIFIC REPORTS
Location
영국
Language
한국어
ISSN
2045-2322
Citation Volume
11
Citation Number
1
Citation Start Page
17143
Citation End Page
17143
Appears in Collections:
Medicine > Medicine
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