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| Evaluation of Image Quality in Combined Low-Contrast Head and Neck CTA Using Different Triggering Methods with 256-layer iCT |
| ZHAO Dechun, YU Kebin |
| The Second Affiliated Hospital of Chengdu Medical College / China National Nuclear Corporation 416 Hospital, Sichuan Chengdu 610051, China |
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Abstract Objective: To observe the evaluation of the image quality of low-contrast head and neck CTA vascular scanning by two different triggering Methods: Test-Bolus and Bolus-Tracking. Methods: A total of 100 cases of head and neck CTA images completed in our department from November 2022 to March 2023 were randomly selected. Among them, Group A comprised 50 cases using the test-bolus method, and Group B comprised 50 cases using the bolus-tracking method. A retrospective analysis was performed to assess the impact of the two different triggering methods on image quality. Results: In Group A, images obtained using the test-bolus method had an average CT value of (338.06±73.54) HU for the carotid arteries and (323.72±73.13) HU for the cerebral middle arteries, with higher image quality compared to Group B. Group B, using the bolus-tracking method, had an average CT value of (276.82±66.72) HU for the carotid arteries and (270.32±65.39) HU for the cerebral middle arteries, with slightly more venous interference but without affecting diagnosis, and slightly inferior image quality. The objective evaluation of the CT values of the carotid and cerebral middle arteries in Groups A and B showed statistically significant differences (P<0.05). The subjective evaluation of the excellent and good rates between the two groups showed that Group A had a higher excellent rate (70%, 35/50) and a higher excellent and good rate (90%, 45/50) compared to Group B (excellent rate: 40%, 20/50; excellent and good rate: 86%, 43/50), with statistically significant differences (P<0.05) in image quality but not in the excellent and good rate (P>0.05). Conclusion: Both imaging methods can meet diagnostic requirements, but using the test-bolus method for scanning can improve image quality with less venous interference.
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[1] 赵凯,吴静云,张保翠,罗健,张晓东,王霄英.基于深度学习算法的增强CT检查后对比剂肾病预测模型研究[J].放射学实践,2023,38(6):720-725.
[2] 戴丽娟,王琦,等.多层螺旋CT肺动脉成像扫描条件的优化研究[J].中国CT和MRI杂志,2017,15(4):71-73.
[3] 许大波,顾文豪.GE256排CT头颈CTA联合扫描的作用价值[J].影像研究与医学应用,2020,4(2):177-178.
[4] 冯晨,方玉,张德川,等.头颈CTA达峰时间相关因素的分析研究[J].CT理论与应用研究,2021,30(6):727-733.
[5] 谢孟臻,吴斌,刘于宝,侯严振,杜牧,贺雄军.超低对比剂剂量和流率在头颈部CT血管造影中的应用[J].中国医学物理学杂志,2022,39(9):1128-1132.
[6] 郑宝聪,滕彬彬,殷磊,等.ForceCT双能量与低kV扫描技术在头颈CTA中的对比研究[J].现代医用影像学,2023,32(3):426-431.
[7] 李俊鹏,刘建,刘娜,杨欣荣,高婷,赵正凯.“三低”技术在CT体部血管一站式成像的应用价值[J].心血管病学进展,2022,43(7):662-666.
[8] NodaY,Nakamura F,Kawai N,et al.Optimized bolus threshold for dual-energy CT angiography with monoenergetic images:a randomized clinical trial[J].Radiology,2021,6(10):210102.
[9] Wael Hamza Kamr,Amir Monier El-Tantawy,Mohamed M,et al.Pulmonary embolism:low dose contrast MSCT pulmonary angiography with modified test bolus technique[J].European Journal of Radiology Open,2020,7(5):100254. |
| [1] |
. [J]. HeBei Med, 2022, 28(6): 1054-1056. |
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2023, Vol. 29 
