BACKGROUND AND PURPOSE: We investigated whether automated and reader-based ASPECTS in acute stroke patients are affected by different CT image reconstruction algorithms. METHODS: ASPECTS were assessed by commercial software and four independent blinded readers (two residents and two consultants) from different CT reconstructions (filtered back projection and two different iterative reconstruction [IR] levels) in 43 acute stroke patients with proximal middle cerebral artery occlusion. Ground truth was provided by an expert with unrestricted data access. RESULTS: The residents showed significant variations between IR levels and had a significantly lower internal consistency across different reconstructions compared to the software, which performed similarly to the consultants. The consultant as well as the software also showed different deviations from ground truth with different IR levels, which were least at IR strength level 2. CONCLUSIONS: CT image postprocessing affects either automated or human ASPECTS in acute stroke patients. This effect was most pronounced in the less experienced readers, while the software had the most robust performance.
BACKGROUND AND PURPOSE: We investigated whether automated and reader-based ASPECTS in acute strokepatients are affected by different CT image reconstruction algorithms. METHODS: ASPECTS were assessed by commercial software and four independent blinded readers (two residents and two consultants) from different CT reconstructions (filtered back projection and two different iterative reconstruction [IR] levels) in 43 acute strokepatients with proximal middle cerebral artery occlusion. Ground truth was provided by an expert with unrestricted data access. RESULTS: The residents showed significant variations between IR levels and had a significantly lower internal consistency across different reconstructions compared to the software, which performed similarly to the consultants. The consultant as well as the software also showed different deviations from ground truth with different IR levels, which were least at IR strength level 2. CONCLUSIONS: CT image postprocessing affects either automated or human ASPECTS in acute strokepatients. This effect was most pronounced in the less experienced readers, while the software had the most robust performance.
Authors: A Potreck; C S Weyland; F Seker; U Neuberger; C Herweh; A Hoffmann; S Nagel; M Bendszus; M A Mutke Journal: Clin Neuroradiol Date: 2021-10-28 Impact factor: 3.649
Authors: Charlotte Sabine Weyland; Panagiotis Papanagiotou; Niclas Schmitt; Olivier Joly; Pau Bellot; Yahia Mokli; Peter Arthur Ringleb; A Kastrup; Markus A Möhlenbruch; Martin Bendszus; Simon Nagel; Christian Herweh Journal: Front Neurol Date: 2022-04-05 Impact factor: 4.003
Authors: Kamil Zeleňák; Antonín Krajina; Lukas Meyer; Jens Fiehler; Daniel Behme; Deniz Bulja; Jildaz Caroff; Amar Ajay Chotai; Valerio Da Ros; Jean-Christophe Gentric; Jeremy Hofmeister; Omar Kass-Hout; Özcan Kocatürk; Jeremy Lynch; Ernesto Pearson; Ivan Vukasinovic Journal: Life (Basel) Date: 2021-05-27