Clinical Value of 7T Ultra-High Field MRI in Evaluating Deep Medullary Veins
10.3969/j.issn.1005-5185.2025.05.005
- VernacularTitle:7T超高场MRI评估深髓静脉的临床价值
- Author:
Yanqiu HUA
1
;
Jing LI
1
;
Yu ZHENG
1
;
Shuyao HE
1
;
Min HE
1
;
Jiafei CHEN
1
Author Information
1. 陆军军医大学第一附属医院7T磁共振转化医学研究中心,重庆 400038;陆军军医大学第一附属医院放射科,重庆 400038
- Publication Type:Journal Article
- Keywords:
Magnetic resonance imaging;
Deep medullary vein;
Ultra-high field;
Susceptibility weighted imaging;
Image quality
- From:
Chinese Journal of Medical Imaging
2025;33(5):474-478
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To investigate the diagnostic value of 7T ultra-high field MRI in deep medullary venography.Materials and Methods This prospective controlled study enrolled 47 healthy subjects from the First Affiliated Hospital of Army Medical University from May to August 2022.All participants underwent susceptibility-weighted imaging scans on both 7T and 3T MRI systems on the same day.Subjective image quality was evaluated using a Likert 5-point scale,while deep medullary vein visualization was assessed via a visual quartile grading system.Objective metrics,including signal-to-noise ratio and contrast-to-noise ratio,were used to evaluate venous image quality.Results There were statistically significant differences in subjective Likert 5-point scores between the 7T and 3T MRI group[5(5,5)vs.4(3,4);Z=234.50,P<0.001].Deep medullary vein visual quartile scores also showed significant differences between 7T and 3T MRI[0(0,0)]vs.[1(1,2);Z=47.00,P<0.001].Signal-to-noise ratio in the 7T group(1.50±0.35)was lower than that in the 3T group(5.45±1.83),while contrast-to-noise ratio(7.64±1.70)was higher than that in the 3T group(5.44±2.11),with both differences being statistically significant(t=14.54,-5.68,P<0.001).Conclusion 7T ultra-high field MRI demonstrates superior image quality for deep medullary venography visualization compared to 3T MRI.
