Evaluation of left and right ventricular systolic function by cardiac MR compressed sensing ultrafast cine sequence
10.3760/cma.j.cn112149-20220310-00100
- VernacularTitle:心脏MR压缩感知超快速电影序列评价左右心室收缩功能的应用价值
- Author:
Gang YIN
1
;
Wenhao DONG
;
Xiuyu CHEN
;
Xinling YANG
;
Jing AN
;
Jianing PANG
;
Yan ZHANG
;
Minjie LU
;
Shihua ZHAO
Author Information
1. 中国医学科学院 北京协和医学院 国家心血管病中心 阜外医院磁共振影像科，北京 100037
- Keywords:
Magnetic resonance imaging;
Compressed sensing;
Ventricular volume;
Systolic function
- From:
Chinese Journal of Radiology
2023;57(3):300-305
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To explore the clinical value of cardiac MR (CMR) compression sensing (CS) ultrafast cine sequence in evaluating left and right ventricular systolic function by comparing with traditional segmented acquisition cine sequence (Seg).Methods:Twenty-seven patients with various heart disease were prospectively included. Seg, breath holding CS (bhCS) and free breathing CS (fbCS) covering the left and right ventricles using multi slices in short axis were performed in random order. Friedman test was used to evaluate the overall image quality (grade 1-5 score), blood pool myocardial signal ratio (BMC) and edge sharpness under different methods. Biventricular end diastolic volume (EDV), end systolic volume (ESV), stroke volume (SV), ejection fraction (EF) and left ventricular myocardial mass (Mass) were measured for all three methods. The agreements of the functional measurements between bhCS and Seg (gold standard), and between fbCS and Seg were analyzed by Bland-Altman, and the correlation test was performed.Results:Twenty-four patients with diagnostic images(overall image quality score≥2) for all three methods were included in further analysis. The total imaging time of Seg, bhCS and fbCS decreased successively[375.0 (332.0, 405.6) vs. 50.0 (47.8, 53.7) vs. 20.0 (17.8, 23.7) s, χ 2=48.00, P<0.001]. The overall image quality of fbCS was slightly lower than that of Seg ( Z=-2.67, P=0.023), and there was no difference between Seg and bhCS ( Z=-1.44, P=0.447), bhCS and fbCS ( Z=1.23, P=0.660). There were no differences in edge sharpness (χ 2=1.08, P=0.582) and BMC (χ 2=0.58, P=0.747) for three methods. Bland-Altman polts showed good agreement for biventricular functional measurements between bhCS and Seg, and between fbCS and Seg. All functional measurements of bhCS and fbCS were highly correlated with that of seg ( r>0.96, P<0.001). Conclusions:Compared with traditional sequences, CS ultrafast cine sequences can save scanning time and provide similar image quality. No matter whether breath holding or not, the cardiac functional results of CS sequence and traditional cine sequence have good agreement and high correlation.
