The Clinical Research of Low Concentration of Lodine Contrast Agent Combined with Low Dose MSCT Scanning Technique in Hepatic Angiography

Objective To discuss the value of MSCT scanning technique of low concentration contrast media combined with low dose in hepatic vascular imaging. Methods 60 patients with clinically suspected hepatic lesions underwent three-phase dynamic scan with contrast media and were randomly dividedly into two groups: 30 patients in control group received Iohexol 350mgI / ml with tube voltage of 120 kV,and the remaining 30 patients in double low group received Visipaque 270 mgI / ml with tube voltage of 100 kV. The enhancement of the vessel will be assessed by CT values of abdominal aorta,celiac trunk,common hepatic artery,portal vein and the three phases enhanced liver parenchyma on image postprocessing workstation. The X-ray radiation as well as the incidence of adverse reactions were calculated. Results The CT values of abdominal aorta,celiac artery,hepatic artery and liver parenchyma of three phases between the control group and the double low group had no statistical significance( P 0. 05). The CT values of portal vein in double low group was higher than that in the control group and the difference was statistically significant( P 0. 05). The differences between the double low group and the control group in the visual evaluation of hepatic artery and portal vein were no statistically significant( P 0. 05). In the radiation dose of double low group and the control group,the difference was statistically significant( P 0. 05). The incidence of discomfort such as fever in the double low group was significantly less than that in the control group. Conclusion Low concentration of iodine contrast agent combined with low dose MSCT scanning technique can obtain satisfactory hepatic angiography image,while reducing the radiation dose and adverse reaction of contrast agent.