The application of low contrast medium dosage combined with segmented injection in head and neck CT angiography
10.3969/j.issn.1002-1671.2024.06.033
- VernacularTitle: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
- Author:
Debao QIU
1
;
Haitao MA
;
Xun SHI
Author Information
1. 东南大学附属响水县人民医院放射科,江苏 盐城 224600
- Keywords:
head and neck;
computed tomography angiography;
low contrast medium dosage;
segmented injection
- From:
Journal of Practical Radiology
2024;40(6):1002-1006
- CountryChina
- Language:Chinese
-
Abstract:
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 theR2 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.
