Comparison of image quality in carotid contrast-enhanced MR angiography based on 1.5T among different flow rates of Gadobutrol
10.3969/j.issn.1002-1671.2024.03.030
- VernacularTitle:钆布醇不同流速下的1.5T颈动脉对比增强MR血管成像图像质量对比研究
- Author:
Hao LIU
1
,
2
,
3
;
Qiying TANG
;
Jianjun ZHOU
;
Liuhong ZHU
Author Information
1. 复旦大学附属中山医院厦门医院放射诊断科,福建 厦门 361015
2. 复旦大学附属中山医院放射诊断科,上海 200032
3. 厦门市影像医学临床医学研究中心,福建 厦门 361015
- Keywords:
contrast agent with high relaxation rate;
carotid;
contrast-enhanced magnetic resonance angiography;
fast low angle shot;
Gadobutrol
- From:
Journal of Practical Radiology
2024;40(3):473-477
- CountryChina
- Language:Chinese
-
Abstract:
Objective To compare the image quality of carotid contrast-enhanced magnetic resonance angiography(ceMRA)under different flow rates using high relaxation rate contrast agent named Gadobutrol,and to find the best flow rate for carotid ceMRA.Methods Total of 117 patients,who were scheduled to perform carotid ceMRA examination using Gadobutrol with a dosage of 0.1 mL/kg body weight on a 1.5T MR platform,were enrolled in the study.They were divided into four groups according to four kinds of flow rates,which were 1.0 mL/s(n=29),1.5 mL/s(n=30),2.0 mL/s(n=30)and 3.0 mL/s(n=28).The signal-to-noise ratio(SNR)of bilateral carotid initiation and bilateral carotid bifurcation were calculated.The SNR of carotid initiation or carotid bifurca-tion between different flow rates were compared.And the scores of image quality among different flow rates were also compared.Results For bilateral carotid bifurcations and carotid initiations,the SNR under 1.5 mL/s were highest,which were significantly higher than those under 1.0 mL/s,while there were no significant differences between each two other flow rates.For the bilateral carotid bifurca-tions,the SNR under 1.0 mL/s were lower than those under other flow rates,and were significantly lower than those under 1.5 mL/s and 3.0 mL/s.The score of the image quality at 1.0 mL/s was significantly lower than that under other flow rates.The score of the image quality at 1.5 mL/s was the highest,but no significant difference was found compared to that at 2.0 mL/s or 3.0 mL/s.Conclusion The rate of 1.5 mL/s is recommended as the best flow rate for carotid ceMRA with Gadobutrol based on 1.5T MR.
