Feasibility of Non-contrast-enhanced Coronary Magnetic Resonance Angiography at 3.0T.
10.3881/j.issn.1000-503X.11295
- Author:
Jing-Wen DAI
1
;
Jian CAO
1
;
Lu LIN
1
;
Xiao LI
1
;
Yi-Ning WANG
1
;
Zheng-Yu JIN
1
Author Information
1. Department of Radiology,PUMC Hospital,CAMS and PUMC,Beijing 100730,China.
- Publication Type:Journal Article
- Keywords:
coronary artery;
image quality;
magnetic resonance angiography
- MeSH:
Contrast Media;
Coronary Angiography;
Coronary Artery Disease;
diagnostic imaging;
Coronary Vessels;
diagnostic imaging;
Feasibility Studies;
Humans;
Magnetic Resonance Angiography
- From:
Acta Academiae Medicinae Sinicae
2020;42(2):216-221
- CountryChina
- Language:Chinese
-
Abstract:
To evaluate the feasibility of non-contrast-enhanced magnetic resonance angiography (NCE-MRA) on a 3.0T scanner. Totally 36 volunteers and 24 patients with clinically suspected coronary artery disease underwent NCE-MRA. The quality of the NCE-MRA images was graded for each segment on a four-point scale. The subjects were divided into two groups according to image quality. The age,body mass index (BMI),heart rate,end-expiratory diaphragm displacement,and respiratory diaphragm motion amplitude were evaluated and compared. The average image quality score of every segment was above 2 points. The proximal and middle segments of left anterior descending artery had significantly higher quality scores than the distal segments (=0.000) and the proximal segment of left circumflex coronary artery had significantly higher quality scores than the distal segments (=0.000),the proximal segment of right coronary artery also had a significant higher quality score than its distal segment (=0.001). The image quality was good in 38 subjects (64.4%). The heart rate [(66.35±9.39) beat/min (75.32±11.67) beat/min] (=0.002) and the body mass index [(24.72±3.33) kg/m (27.82±3.61) kg/m ] (=0.002) were significantly different between the good image quality group and the poor image quality group. The end-expiratory diaphragm displacement in good image quality group was (4.43±2.07)mm,which was significantly lower than that in poor image quality group [(9.26±7.62)mm](=0.013). The respiratory diaphragm motion amplitude [(21.35±6.02) mm] in good image quality group was significantly lower than that in poor image quality group [(30.68±14.20)mm](=0.012). NCE-MRA on 3.0T is a feasible tool for visualization of the proximal and middle segments of coronary arteries,and the image quality can be optimized by controlling heart rate and respiration in the future.
