• World Neurosurg · Mar 2024

    Review

    Quality Assessment of Radiomics Studies on Functional Outcomes Following Acute Ischemic Stroke - A Systematic Review.

    • Rishabh Gupta, Cem Bilgin, Mohamed S Jabal, Sedat Kandemirli, Sherief Ghozy, Hassan Kobeissi, and David F Kallmes.
    • Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA; University of Minnesota Medical School, Minneapolis, Minnesota, USA. Electronic address: gupta.rishabh@mayo.edu.
    • World Neurosurg. 2024 Mar 1; 183: 164171164-171.

    ObjectiveRadiomics is a machine-learning method that extracts features from medical images. The objective of the present systematic review was to assess the quality of existing studies that use radiomics methods to predict functional outcomes in patients after acute ischemic stroke.MethodsStudies using radiomics-extracted features to predict functional outcomes among patients with acute ischemic stroke using the modified Rankin Scale were included. PubMed, Scopus, Web of Science, and Embase were screened using the terms "radiomics" and "texture" in combination with "stroke." Quality scores were calculated based on Radiomics Quality Score, the IBSI (Image Biomarkers Standardization Initiative), and the QUADAS-2 (Quality Assessment of Diagnostic Accuracy Studies 2).ResultsFourteen studies were included. The median total Radiomics Quality Score was 14.5 (13-16) out of 36. Domains 1, 5, and 6 on protocol quality and stability of imaging and segmentation, level of evidence, and use of open science and data, respectively, were poor. Median IBSI score was 2.5 (1-5) out of 6. Few studies included bias-field correction algorithms, isovoxel resampling, skull stripping, or gray-level discretization. Of 14 studies, none received +6 points, 1 received +5 points, 5 received +4 points, 1 study received +3 points, 5 received +2 points, 2 received +1 points, and none received 0 points. As per the QUADAS-2, 6/14 (42.9%) studies had a risk of bias concern and 0/14 (0%) had applicability concern.ConclusionsThe quality of the included studies was low to moderate. With increasing use of radiomics, future studies should attempt to adhere to and report established radiomics quality guidelines.Copyright © 2023 Elsevier Inc. All rights reserved.

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