不同的造影剂入路方式在头颈部CT血管造影中的应用  

Application of different contrast agent approaches in CTA examination of the head and neck

作　　者：陈方园 王磊 裴敏 Chen Fangyuan;Wang Lei;Pei Min(Department of Radiology,Sihong Hospital in Sihong County,Jiangsu 223900,China)

机构地区：[1]江苏省泗洪县泗洪医院放射科,223900

出　　处：《实用医学影像杂志》2024年第3期211-213,共3页Journal of Practical Medical Imaging

摘　　要：目的 通过经下肢静脉入路与常规上肢静脉入路团注造影剂行头颈部CT血管造影(CTA)检查,对所得2组图像进行对比观察及质量评价。方法 收集我院临床疑诊头颈部血管性病变并于我科行头颈部CTA联合检查的患者60例将其分为试验组(下肢静脉入路)和对照组(上肢静脉入路),每组30例。通过对从下肢静脉入路与从上肢静脉入路团注造影剂进行CTA检查所得图像进行比较、分析、评价。结果 试验组CT值低于对照组,平均CT值:试验组(310±10)Hu,对照组是(330±10)Hu。试验组30例患者图像头臂干、双侧颈总动脉起始部及双侧锁骨下动脉都较对照组显示良好(仅有2例目标血管内CT值偏低);对照组30例可见造影剂在邻近静脉残留,造成不同程度的伪影,干扰成像动脉的图像质量。结论 经下肢静脉入路的造影方案,获得了良好的符合影像诊断要求的CTA图像,所得图像目标血管管壁清晰,对比良好,无邻近伴行静脉内造影剂污染,影像信息真实可靠。Objective To compare two groups of images obtained through two different contrast media access methods(the injection of contrast media in the lower limb extremity venous approach and the conventional upper extremity venous approach)in CT angiography(CTA)examination of the head and neck.Methods Sixty patients who were suspected of vascular lesions of the head and neck and underwent CTA examination in our clinic were collected and divided into an experimental group(lower extremity venous approach)and a control group(upper extremity venous approach),with 30 cases in each group.Compare,analyze,and evaluate two groups of CTA examination images obtained from the injection of contrast media in the lower limb extremity venous approach and the conventional upper extremity venous approach.Results The CT values of the experimental group were lower than those of the control group,average CT value was(310±10)Hu in the experimental group and(330±10)Hu in the control group.The experimental group showed better images of the head and arm trunk,the beginning of the bilateral common jugular A,and the bilateral subclavian A than those in the control group(only 2 cases had lower target intravascular CT values);in the control group,30 patients were seen to have contrast residue in the adjacent veins,causing different degrees of artifacts and interfering with the image quality of the imaging arteries.Conclusion The imaging protocol of contrast media injection in the lower limb extremity venous approach can make better CTA images that meet the diagnostic imaging requirements.The images obtained had clear walls of the target vessels,good contrast,no contamination of the adjacent concomitant intravenous contrast,and realistic and reliable imaging information.

关 键 词：计算机体层摄影血管造影术 造影剂 体层摄影术 螺旋计算机 头颈部血管 

分 类 号：R816.1[医药卫生—放射医学]