低剂量对比剂联合分段注射在头颈部CT血管成像中的应用  

The application of low contrast medium dosage combined with segmented injection in head and neck CT angiography

作　　者：邱德宝 马海桃 史讯 QIU Debao;MA Haitao;SHI Xun(Department of Radiology,Xiangshui County People’s Hospital Affiliated to Southeast University,Yancheng,Jiangsu Province 224600,China;Department of PET/CT Imaging Center,Yancheng First People’s Hospital Affiliated to Nantong University,Yancheng,Jiangsu Province 224000,China)

机构地区：[1]东南大学附属响水县人民医院放射科,江苏盐城224600 [2]南通大学附属盐城市第一人民医院PET/CT影像中心,江苏盐城224000

出　　处：《实用放射学杂志》2024年第6期1002-1006,共5页Journal of Practical Radiology

摘　　要：目的探讨低剂量对比剂联合分段注射在头颈部CT血管成像(CTA)中的临床应用价值。方法前瞻性连续选取139例行头颈部CTA检查的患者,将其分为原方案组(A组)和新方案组(B组),比较2种注射方案在头颈部动脉血流参数方面的差异。结果2组在主动脉弓层面、颈总动脉中段层面以及颈内动脉颈段层面,CT值的差异有统计学意义(P<0.05);而在颈内动脉交通段层面,CT值的差异无统计学意义(P>0.05)。2组的锁骨下静脉伪影评分差异无统计学意义(P>0.05)。小剂量团注测试峰值与A组各个层面的决定系数(R2)值分别0.589、0.588、0.496、0.370;与B组的R2值分别为0.531、0.531、0.642、0.615。A、B组各个层面间的组内相关系数(ICC)值分别为0.872、0.888。结论采用分段注射方案可以在满足临床诊断要求的同时,使颅内血管成像更加稳定,并且使头颈部血管CT值更加均匀一致。Objective To explore the clinical application value of low contrast medium dosage combined with segmented injection in head and neck computed tomography angiography(CTA).Methods A total of 139 patients who underwent head and neck CTA examination were prospectively and continuously selected.All patients were divided into the two groups,including group A with the original protocol and group B with the new protocol.The differences of arterial hemodynamic parameters between the two groups were compared.Results It was observed that statistically significant differences in CT values at the level of the aortic arch,the middle of the common carotid artery,and the cervical segment of the internal carotid artery between group A and group B(P<0.05);however,there was no statistically significant difference in CT values at the communicating level of the internal carotid artery between the two groups(P>0.05).There were no statistically significant differences in subclavian vein artifact scores between the two groups(P>0.05).The R2 values for test-bolus kurtosis in group A were 0.589,0.588,0.496,and 0.370 for each level,while the R2 values were 0.531,0.531,0.642,and 0.615 in group B,respectively.The intraclass correlation coefficient(ICC)values between each level of groups A and B were 0.872 and 0.888,respectively.Conclusion The segmented injection protocol provides a more stable angiography of intracranial vessels.It also shows more uniform and homogeneous CT values in head and neck vessels,with clinical diagnostic requirements.

关 键 词：头颈部 CT血管成像 低剂量对比剂 分段注射 

分 类 号：R814.43[医药卫生—影像医学与核医学] R981.1[医药卫生—放射医学]