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- W2368958944 abstract "Objective:To investigate the value of dual energy pulmonary perfusion imaging using dual source CT in the diagnosis and clinical application of pulmonary artery embolism(PE).Methods:Seventy-eight consecutive patients suspected of having PE underwent CT pulmonary arteriography with dual-energy technique on a dual source CT scanner.CT pulmonary arteriography(CTPA) and perfusion blood volume(PBV) images after post-processing of the raw data were obtained.Evaluation of the PBV image quality and typing of PE were performed by two radiologists as well as to observe the presence,location,extent of PE.The PBV appearances and its relationship with CTA images as well as pulmonary parenchyma abnormities were analyzed.The consistency of the 2 observers in evaluating the PBV image quality and typing were examined by Kappa value.The sensitivity,specificity,positive predictive value(PPV) and negative predictive value(NPV) of PBV images for the diagnosis of PE were calculated.Results:The ranking of PBV image quality and typing showed very good agreement between two observers,the K value was 0.87 and 0.80,respectively(P0.01).The sensitivity,specificity,PPV and NPV of PVB for the diagnosis of PE was 95.3%,56.4%,70.7%,91.2%,respectively.The sensitivity and specificity was 100% respectively for patients with complete PA occlusion.Conclusion:Abnormalities caused by pulmonary blood flow changes induced by PE could be displayed by PBV with dual energy pulmonary perfusion imaging on dual source CT." @default.
- W2368958944 created "2016-06-24" @default.
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- W2368958944 date "2012-01-01" @default.
- W2368958944 modified "2023-09-27" @default.
- W2368958944 title "Dual energy perfusion imaging using dual source CT in the diagnosis and clinical application of pulmonary embolism" @default.
- W2368958944 hasPublicationYear "2012" @default.
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