高浓度造影剂在眼动脉CT双能量血管成像中的应用研究

Application of CT Dual Energy Imaging with High Concentration Contrast in Ophthalmic Artery Vascular Examination

目的:探讨双源螺旋CT双能量血管成像配合高浓度碘造影剂在眼动脉血管成像中的应用价值。方法:2014年3月至2015年12月选择在我院行颅脑CTA患者80例(160眼),随机分成观察组与对照组两组,两组分别行双能CT血管造影及螺旋CT减影成像后判断与分析。前者使用拜耳370mg I/m L造影剂,后者使用GE 350mg I/m L造影剂;结果:所有入选者的眼动脉CTA图像均明确显示,眼动脉主要分支血管充盈良好;经过测定,观察组的颅内段、视神经管段、眶内段等眼动脉直径都明显多于对照组(P<0.05),直径分别为1.26 mm±0.16 mm、1.21 mm±0.18 mm、1.12 mm±0.14 mm;观察组与对照组的斑块检出率分别为28.8%和2.5%,观察组明显高于对照组(P<0.05)。结论:利用双源螺旋CT行双能CT血管成像在眼动脉疾病判断的应用显示效果佳,能有效判断眼动脉直径状况与斑块情况,从而指导治疗。

Objective： To explore the application value of iodine contrast agent with high concentration in the ophthalmic artery angiography in dual source dual energy CT angiography. Methods： From March 2014 to December 2015, 80 patients （160 eyes） with brain CTA were selected in our hospital. 80 patients were randomly divided into observation group and control groups, Judgment and analysis of the two groups of dual energy CT angiography and spiral CT subtraction, the former uses the Bayer 370 mgI/mL contrast agent, the latter uses the GE 350 mgI/mL contrast agent. Results： The ophthalmic artery CT angiography images of all subjects showed clear, full of each vessel filling well. After the measurement, the intracranial segment of the observation group, the optic nerve canal segment, the diameter of the orbital segment and other ocular artery were significantly more than the control group （P 〈 0.05）, Diameter （mm） were： 1.26 ±0.16, 1.21±0.18, 1.12 ±0.14. The detection rate of plaque in the observation group and the control group were 28.8% and 2.5%, the observation group was significantly higher than that of the control group （P 〈 0.05）. Conclusion： Using dual source spiral CT dual energy CT angiography applied in the judgment of the ophthalmic artery disease showed good effect. Can effectively judge the diameter of the ophthalmic artery and plaque situation, so as to guide the treatment.