Application of the third generation dual source CT in head and neck angiography
10.3969/j.issn.1009-0126.2018.06.003
- VernacularTitle:第三代双源CT双低扫描模式在头颈部血管成像中的应用
- Author:
Xiaojing ZHAO
1
;
Cheng ZHAO
;
Peipei WANG
;
Yan LI
;
Jiabin LIU
;
Jie LU
Author Information
1. 首都医科大学宣武医院放射科北京磁共振成像脑信息学北京市重点实验室
- Keywords:
tomography,X-ray computed;
radiation dosage;
cerebral angiography;
iodine
- From:
Chinese Journal of Geriatric Heart Brain and Vessel Diseases
2018;20(6):568-571
- CountryChina
- Language:Chinese
-
Abstract:
Objective To study the application of the third generation dual source CT in head and neck angiography.Methods Sixty patients admitted to our hospital for head and neck CT angiography were randomly divided into group A (n=30) and group B (n=30).The patients in group A were given 50 ml contrast medium and 50 ml normal saline with the tube voltage set at 90 kV while those in group B were given 40 ml contrast medium and 50 ml normal saline with the tube voltage set at 80 kV.The patients in two groups were given a different dose of contrast mediumnaproyan (370 mgI/ml).The signal noise ratio (SNR),contast noise ratio (CNR),effective dose and iodine intake volume at bilateral common carotid artery bifurcation were compared between the two groups.Results No significant difference was found in the image subjective score between groups A and B (4.167±0.698 vs 4.500±0.572,P=0.682).The mean idione intake volume was 14％ lower in group B than in group A (P=0.00).No significant difference was found in the SNR and CNR at bilateral common carotid artery bifurcation between the two groups.The effective dose was 17％ and 14％ lower in group B than in group A after plane scanning and contrast medium injection.Conclusion Application of the third generation dual source CT in head and neck angiography can achieve rather good images and is thus of a high value in its clinical application.
