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- W2359200974 abstract "Objective: To study the clinic application for CT angiography with small doses and rapid injection of contrast media in the arteries of head and neck.Methods: One hundred and twenty patients with head/neck CT angiography were divided into 4 groups according to the dosage of contrast media.A control group was treated with the contrast media 70 ml,4 ml/s as generally.After injection of contrast media the physiological saline 30 ml was injected with same rate.Three experimental groups were used the contrast media 40 ml,and 4,5,6 ml/s separately.After injection of contrast media the physiological saline 60 ml was injected with same rate.According to the original image and maximum intensity projection image,each group was graded by using source image for measuring intravascular concentration of contrast agent(Intravascular CT Attenuation),the formation of artifact in veins,and display level in small arteries were recorded and assessed.Result: Carotid artery image display that the blood vessels of the 5 ml/s experimental group,6 ml/s experimental group,and control group set of clear,but the 4 ml/s experimental group showed not well(P0.05).There were 18 cases(60.0%) showed the hard-beam artifacts in the brachiocephalic vein and subclavian vein of in the control group,the experimental group had less(6 cases in 3 groups,6.7%) showed venous hard beam artifacts in comparison(P0.05).Imaginable score of small arteries in neck were showed well in 5,6 ml/s experimental group than the control group with significant difference(P0.05).Conclusion: It is feasible to use small dose,rapid injection of contrast media with dual-source CT angiography in neck scan.It can guarantee the image quality but also reduce the formation of scanned image artifacts in the brachiocephalic vein and subclavian vein in CT angiography in head and neck." @default.
- W2359200974 created "2016-06-24" @default.
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- W2359200974 date "2011-01-01" @default.
- W2359200974 modified "2023-09-23" @default.
- W2359200974 title "Clinical application on dual-source CT angiography with small doses and rapid injection of contrast agent in neck" @default.
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