Research of 16-slice CT in the Double Low Dose Renal Artery Imaging
Abstract：Objective To investigate the feasibility of the double low dose (low dose contrast agent and low X -ray radiation) CT re-nalarteriesimaging.Methods 36caseswithclinicallysuspectedrenalarterydiseasewererandomlydividedintothreegroups,withevery 13 cases in the conventional dose group , double low -dose group A and double low -dose group B.Double low -dose group A:320 mgI/mL ioversol 0.8 mL/kg, 120 kV, automatic mA, SD15 ); double low -dose group B: 320 mgI/mL ioversol 0.8 mL/kg, 120 kV, automatic mA, SD20 );conventional dose group:300 mgI/mL iohexol 1.3 mL/kg, 120 kV, automatic mA, SD10).Other scan parameters are consistent , with 3.5 mL/s injection rate.The original thin slice images were transferred to the Vitrea workstation for post processing, to restructure MIP, VR image, the axial images and reformatted images sent to the NFPACS.Cases were recorded in each volume CT dose index (CTDIvol).SPSS16.0 was used for statistical analysis.Results The CTDIvol of group A and B group were 65%and 43%of the conventional dose group respectively.Effective iodine consumption of per kilogram body weight was obviously reduced , which were 66%of the conventional dose group.The main renal artery and the first branches showed no statistically significant difference among the groups.Double low dose group A for renal artery main branches and second branches showed good result .Double low-dose group B for secondary renal artery branches showed poor result.Conclusion Double low dose group A image meets the needs of clinical diagnosis.Low dose contrast agent combined with low dose of radiation ( double low dose ) CT renal artery imaging is feasible.
Keywords：Renal arteries imagingCT imagingLow does contrastLow radiation dose
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：2( 810-811 )