| Tseng YC |
------>authors3_c= ------>paper_class1=1 ------>Impact_Factor=1.509 ------>paper_class3=2 ------>paper_class2=1 ------>vol=31 ------>confirm_bywho=wingchan ------>insert_bywho=ed100975 ------>Jurnal_Rank=51.7 ------>authors4_c= ------>comm_author=1 ------>patent_EDate=None ------>authors5_c= ------>publish_day=1 ------>paper_class2Letter=None ------>page2=364 ------>medlineContent= ------>unit=E0119 ------>insert_date=20081223 ------>iam=4 ------>update_date=None ------>author=??? ------>change_event=4 ------>ISSN= ------>authors_c= ------>score=308 ------>journal_name=J Computer Assisted Tomography ------>paper_name=Venous reflux on carotid CT angiography: relationship with left-arm ------>confirm_date=20081224 ------>tch_id=097094 ------>pmid=17538279 ------>page1=360 ------>fullAbstract=OBJECTIVE: We evaluated the relationship between image degradation due to the reflux of contrast agent into the major neck veins and use of a left-arm injection site during computed tomographic (CT) angiography of the carotid arteries. METHODS: A total of 364 patients underwent 4-section carotid CT angiography performed with an injection into the right (n = 183) or left (n = 181) arm. We calculated the volume of refluxed contrast medium and measured the retrosternal distance measured as the shortest distance between the sternum and the arch or its branches. Nine patients underwent follow-up CT angiography weeks later by using the side of injection not used before for comparison. RESULTS: The amount of refluxed contrast medium was greater with left-arm injection than with right-arm injection (P < 0.001). With left-arm injection, the volume was significantly correlated with the retrosternal distance (r = -0.514, P < 0.001), even after we adjusted for age and sex in the linear regression model (P < 0.001). Five of the 9 patients who received injections in both arms had no reflux of contrast medium, whereas 4 patients had obvious reflux after left-arm but not right-arm injection. CONCLUSION: Normal compression of the left brachiocephalic vein due to a developmental decreased retrosternal space may degrade carotid CT angiograms because of reflux of contrast material into the cervical veins. This degradation can be avoided if right-arm injection is used. ------>tmu_sno=None ------>sno=20939 ------>authors2=Hsu HL ------>authors3=Lee TH ------>authors4=Chen CJ ------>authors5= ------>authors6= ------>authors6_c= ------>authors=Tseng YC ------>delete_flag=0 ------>SCI_JNo=None ------>authors2_c= ------>publish_area=0 ------>updateTitle=Venous reflux on carotid computed tomography angiography: relationship with left-arm injection. ------>language=2 ------>check_flag=None ------>submit_date=None ------>country=None ------>no=3 ------>patent_SDate=None ------>update_bywho=None ------>publish_year=2007 ------>submit_flag=None ------>publish_month=5 |