|
|
|
| Effect of Low Voltage and Low Contrast Agent Concentration on Imaging Quality of Head and Neck CTA |
| YANG Bei, WANG Xiang, ZHANG Shu-tong,et al |
| Department of Imaging, the Central Hospital of Wuhan, Wuhan 430014 |
|
|
|
|
Abstract 【Objective】To investigate the effect of low tube voltage combined with low concentration contrast agent on the imaging quality of head and neck CT angiography (CTA). 【Methods】The clinical data of 212 patients with head and neck CTA in our hospital were selected and divided into group A, group B, group C and group D according to random number table method, 53 cases in each group. Patients in the group A were given conventional tube voltage (120 kV), tube current (150 mAs) and contrast agent concentration (350 mg/ml of iodine). Patients in the group B were given tube voltage (120 kV), tube current (150 mAs) and contrast agent concentration (320 mg/ml of iodine). Patients in the group C were given tube voltage (100 kV), tube current (150 mAs) and contrast agent concentration (350 mg/ml of iodine). Patients in the group D were given tube voltage (100 kV), tube current (150 mAs) and contrast agent concentration (350 mg/ml of iodine). Tube current (150 mAs) and contrast medium concentration (320 mg/ml iodine). The image quality score, CT value of arterial segment, signal-to-noise ratio and radiation dose were compared among the four groups.【Results】There was no significant difference in image quality scores between group A, group B, group C and group D (Z=1.746,P=0.077>0.05). The CT values of aortic arch (AOAR), basilar artery (BA), left common carotid artery (CCA), right CCA, left internal carotid artery (ICA) and right ICA in the four groups were significantly different (P<0.05). The CT values of each artery segment in the group D were higher than those in the group A and the group B, lower than those the in group C (P<0.05). The signal-to-noise ratio of the group A and the group D was higher than that of the group B and the group C. The iodine intake of the group B and the group D was lower than that of the group A and the group C. The effective dose of the group C and the group D was lower than that of the group A and the group B. The difference was statistically significant (P<0.05).【Conclusion】Low tube voltage combined with low contrast agent concentration can effectively reduce radiation dose and iodine intake in patients undergoing head and neck CTA examination, and can ensure better image quality and meet the needs of clinical diagnosis.
|
|
Received: 19 August 2018
|
|
|
|
|
|
[1] 李姝琪,郭君武.双源CT双低扫描在头颈部血管成像中的应用[J].中华老年医学杂志,2015,34(5):502-505.
[2] 王明月,周悦,高剑波,等.头颈部CT血管成像中器官剂量调制技术对敏感器官的保护作用[J].中华放射学杂志,2016,50(7):500-503.
[3] 查潇逸,庞长安,张晓艳,等.DSA在外伤性动脉损伤导致的严重鼻出血诊断中的应用及评价[J].中国实验诊断学,2017,21(6):1019-1021.
[4] 熊青云.彩色多普勒超声诊断乳腺良性和恶性肿瘤的临床价值[J].中国现代医学杂志,2015,25(24):93-95.
[5] AbdelRazek AA.Role of computed tomography angiography in the diagnosis of vascular stenosis in head and neck microvascular free flap reconstruction[J].Int J Oral Maxillofac Surg,2014,43(7):811-815.
[6] 武洪林,李俊,李红尧,等.双源CT低管电压及低剂量等渗对比剂在头颈部CTA中的初步研究[J].医学影像学杂志,2017,27(7):1213-1217.
[7] 王海林,兰茜琳,纪建松,等.采用低管电压联合低浓度对比剂方案行头颈CT血管成像的可行性[J].中华放射学杂志,2017,51(5):382-385.
[8] 袁有法,房星宇,张艺军,等.64层螺旋CT小剂量对比剂结合低管电压在头颈部CT血管成像中的应用价值[J].解放军医药杂志,2017,29(11):96-100.
[9] 刘锴,陆秀良,周潇峰,等.低管电压结合低碘对比剂在前门控双源CT冠状动脉CTA中的应用[J].中国临床医学,2017,24(2):257-259.
[10] 章辉庆,邱晓晖,刘艺超,等.双源CT“双低方案”在冠状动脉CT血管成像检查中的可行性研究[J].中国全科医学,2017,20(9):1127-1131.
[11] 陶黎,刘传,黄扬,等.小剂量团注测试技术在头颈部宝石CTA中的应用[J].重庆医学,2017,46(3):347-348. |
|
|
|
2019, Vol. 36 
