Application Value of Iodixanol in Detecting Aortic Dissection of Elderly Patients in Low Dose Scanning Scheme by Idose

Objective To investigate the application value of combined application of reducing the radiation dose by iDose low-dose scan strategy and using iodixanol as contrast agents in elderly CTA detection to aortic dissection. Methods 36 cases of aortic dissection were enrolled. According to number table, they were divided in to two groups randomly. The detection of Group A was under the condition of 120kV for tube voltage, 0 for iDOSE and iohexol (350mg I/mL) as contrast agent; while Group B was under the condition of 100kV for tube voltage, 3 for iDOSE and odixanol (270mg I/mL) as contrast agent. The image quality, radiation dose and iodine intakes were analyzed between two groups. Results There was no statistical significance between the two groups with subjective score of image quality and CT value. Group B reflected lower level for both radiation dose and iodine intake, compared to Group A , with statistical significance. Conclusion It deserves the clinical expansion of combined application of reducing the radiation dose by iDose low-dose scan strategy and using iodixanol as contrast agents in elderly CTA detection to aortic dissection, by effectively reducing the radiation dose and iodine intake.