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《CT Theory and Applications》 2011-04
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Research of DSCT Neck CTA Optimizing Program

CHEN Xin,ZHOU Chang-sheng,ZHANG Jun,GU Hai-feng,LUO Song,ZHENG Ling Department of Radiology,General Hospital of Nanjing,Nanjing Military Area Command,Nanjing 210002,China  
Objective:To explore optimal program of dual-source CT in cervical vessel.Methods:60 Neck CTA cases were randomly divided into two groups(A and B,each group contains 30 cases).The injection rate of contrast is 4.0 mL/s.With the help of automatic trigger technic taking triggered threshold as 120 Hu scanning began4 seconds after the CT value arriving at the peak 75 Hu peak While scanning direction was from caudal to cranial in A group,and cranial to caudal in group B,which is the optimal program.The other parameters were constant.All data was sent to the workstation and evaluated by SIEMENS software.Results:The CT value of brachiocephalic veininjected between group A and B had statistical significance(p0.01).Although the CT value of aortic artery in group B was a bit higher than that in group A,and the CT value of middle cerebral artery in group B was a bit lower than that in group A,those had no statistical significance.Conclusion:The optimal program of dual-source CT in cervical vessel can effectively demolish the disturbance of brachiocephalic vein injected and improve the image quality of cervical artery.
【CateGory Index】: R816.2
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