Diffusion-weighted Imaging in Ischemic Stroke: Effect of Display Method on Observers' Diagnostic Performance
Diffusion-weighted Imaging in Ischemic Stroke: Effect of Display Method on Observers' Diagnostic Performance
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DOI：
10.1016/j.acra.2008.09.012
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发表时间：
2009-03-01
影响因子：
4.8
通讯作者：
Yamashita, Yasuyuki
中科院分区：
文献类型：
--
作者：
Hirai, Toshinori;Sasaki, Makoto;Yamashita, Yasuyuki
Rationale and Objectives. When evaluating ischemic stroke oil diffusion-weighted magnetic resonance imaging (DWI), the display method has not been investigated. The purpose of this study was to determine whether standardization of the display method for DWI affects observers' diagnostic performance in detecting ischemic stroke on DWI.Materials and Methods. Twenty-six observers evaluated 40 DWI studies in 20 patients with acute (< 6 hours) middle cerebral arterial strokes and 20 controls for the presence of hyperintense lesions in 10 areas using the Alberta Stroke Programme Early CT Score (ASPECTS) system and one area in the corona radiata using a modified version of the ASPECTS system (ASPECTS-DWI). The images were reviewed using a standardized display method (SDM) and a conventional display method (CDM). The reading time was recorded for each session. The observers' performance was evaluated with receiver-operating characteristic analysis.Results. In all observers with ASPECTS-DWI scores of
