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- W2354875904 abstract "Objective To assess the influence of lowering temporal sampling rates of CT perfusion(CTP) on parameters for reducing the radiation dose.Methods Twenty-five patients with ischemic sufferings underwent CTP.Original sampling rate was 1 rotation per second.Data were acquired with 4i×7.2 mm and totally 160 images were obtained.Additional four data sets were obtained with temporal resolution of 2 s,3 s,4 s,5 s,respectively.Data sets were postprocessed with Neuro PCT.Cerebral blood flow(CBF),cerebral blood volume(CBV) and time to peak(TTP) were measured with the identical ROI.The results of the four data sets were compared with that of the original data sets.Results Signal-noise ratio(SNR) of color-coded parameter maps for CBF,CBV and TTP were lowering as sampling rate reduced,especially under 3 s temporal resolution.All perfusion parameters of 2 s temporal resolution data sets did not differ with that of the original data sets.The radiation reduced significantly when temporal sampling rate decreased.Conclusion Accurate perfusion parameters can be obtained with 2 s temporal resolution for CTP in ischemic stroke,and the radiation dose would be reduced significantly." @default.
- W2354875904 created "2016-06-24" @default.
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- W2354875904 date "2012-01-01" @default.
- W2354875904 modified "2023-09-23" @default.
- W2354875904 title "Optimizing temporal resolution on dynamic perfusion CT in ischemic stroke" @default.
- W2354875904 hasPublicationYear "2012" @default.
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