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- W2355659968 abstract "Objective:To compare the quality of the images using different thresholds of automatic bolus tracking in multi-row detector CT angiography (MDCTA) of carotid arteries.Methods:Sixty patients undergoing MDCTA were randomly allocated to three groups.The automatic bolus tracking thresholds of 80HU,100HU and 120HU in the descending aorta was used for three groups,respectively.The location of CT value measurements in carotid artery and vein was recorded as follows:the level of proximal common carotid artery (A),carotid bifurcation (C),jugular foramen (D),and the midpoint between A and C (B).Results:Using three different thresholds,the CT attenuation of carotid artery in the four regions were A 287.75~316.70,B 338.35~359.30,C 334.70~357.65,D 316.55~320.40 retrospective,there were no statistical difference (P0.05).The CT attenuation of carotid vein in the four regions were A 68.10~104.15,B 100.60~169.60,C 120.10~216.70,D 176.10~247.30.However,the CT values of carotid vein in B,C and D regions tended to be lower with lower tracking threshold.The degree of vein enhancement in the group of 80HU were significantly lower than that of 100HU and 120HU,and has statistical difference (P0.05).Conclusion:For MDCTA of carotid arteries,the bolus tracking threshold of 80HU in the descending aorta is preferable." @default.
- W2355659968 created "2016-06-24" @default.
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- W2355659968 date "2007-01-01" @default.
- W2355659968 modified "2023-09-23" @default.
- W2355659968 title "16 MDCT Angiography of Carotid Arteries:Comparison of Different Automatic Bolus Tracking Thresholds" @default.
- W2355659968 hasPublicationYear "2007" @default.
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