Differences in CT perfusion summary maps for patients with acute ischemic stroke generated by 2 software packages.

AJNR. American Journal of Neuroradiology
F FahmiC B Majoie

Abstract

Although CT perfusion is a promising tool to support treatment decisions for patients with acute ischemic stroke, it still lacks a standardized method for CTP analysis. The purpose of this study was to assess the variability of the area of infarct core and penumbra as presented in summary maps produced by 2 different software packages. Forty-one CTP image datasets of 26 consecutive patients who presented with acute ischemic stroke were retrospectively evaluated. Identical image datasets were analyzed by using 2 different commercially available CTP analysis software packages, each representing a mainstream of widely used algorithms: delay-sensitive and delay-insensitive. Bland-Altman analyses were performed to evaluate the level of agreement between the 2 methods in determining the area of infarct core and penumbra area in the summary maps. There was a statistically significant difference in infarct core area (-23.6 ± 25.6 cm(2)) and penumbra area (15.8 ± 25.3 cm(2)) between the 2 software packages. For all the areas presented in the summary maps, the Bland-Altman interval limit of agreement was larger than 100 cm(2). The infarct core and penumbra area of CTP summary maps generated by 2 commonly used software packages were signi...Continue Reading

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Citations

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