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• W1967701789 abstract "Purpose To investigate the added value of lung perfused blood volume (LPBV) using dual-energy CT for the evaluation of intrapulmonary clot (IPC) in patients suspected of having acute pulmonary embolism (PE). Materials and methods Institutional review board approval was obtained for this retrospective study. Eighty-three patients suspected of having PE who underwent CT pulmonary angiography (CTPA) using a dual-energy technique were enrolled in this study. Two radiologists who were blinded retrospectively and independently reviewed CTPA images alone and the combined images with color-coded LPBV over a 4-week interval, and two separate sessions were performed with a one-month interval. Inter- and intraobserver variability and diagnostic accuracy were evaluated for each reviewer with receiver operating characteristic (ROC) curve analysis. Results Values for inter- and intraobserver agreement, respectively, were better for CTPA combined with LPBV (ICC = 0.847 and 0.937) than CTPA alone (ICC = 0.748 and 0.861). For both readers, diagnostic accuracy (area under the ROC curve [Az]) were also superior, when CTPA alone (Az = 0.888 [reader 1] and 0.912 [reader 2]) was compared with that after the combination with LPBV images (Az = 0.966 [reader 1] and 0.959 [reader 2]) (p < 0.001). However, Az values of both images might not have significant difference in statistics, because Az value of CTPA alone was high and 95% confidence intervals overlapped in both images. Conclusion Addition of dual-energy perfusion CT to CTPA improves detection of peripheral IPCs with better interobserver agreement." @default.
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• W1967701789 date "2015-01-01" @default.
• W1967701789 modified "2023-09-25" @default.
• W1967701789 title "Added value of lung perfused blood volume images using dual-energy CT for assessment of acute pulmonary embolism" @default.
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• W1967701789 doi "https://doi.org/10.1016/j.ejrad.2014.09.009" @default.
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