Peripheral contrast-enhanced MRA at open-bore 3 T, with low dose contrast agent
- VernacularTitle:大孔径3T低剂量下肢动脉MRA的临床研究
- Author:
Dan LI
;
Kexue DENG
;
Jiang LIN
- Publication Type:Journal Article
- Keywords:
peripheral arterial occlusive disease;
magnetic resonance angiography;
parallel acquisition technique
- From:
Acta Universitatis Medicinalis Anhui
2015;50(9):1333-1336
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the feasibility with low dose contrast agent in patients undergoing peripheral magnetic resonance angiography with high spatial resolution at open-bore 3 T scanner. Methods Images of MRA were assessed separately by two radiologists. And the images of DSA were assessed by one radiologist. The degree of the two interobservers' consensus for detection of arterial stenosis was determined by calculating the Kappa coef-ficient. Spearman rank correlation coefficient was used for revealing the relationship between contrast-enhanced MR angiography and DSA,in terms of categories of stenosis. Results For the degree of vessel stenosis, Cohen' s statis-tics revealed excellent agreement between the two observers. There was a significant correlation between DSA and MRA(P<0. 05). Conclusion At this open-bore 3 T scanner, high spatial resolution peripheral magnetic reso-nance angiography is achieved with low dose contrast agent.
