Objective To compare the free breathing single-shot compressed sensing cine(FB single-shout CS cine)with balanced steady state free precession cine(bSSFP Cine),The application value of FB single-shout CS cine sequence in cardiac magnetic resonance(CMR)in patients with arrhythmia.Methods A total of 26 patients with arrhythmia(17 males and 9 females)were scanned by 1.5 T MR Using bSSFP cine and FB single-shot CS cine,respectively,and were di-vided into groups A and B according to the above techniques.The quality of cardiac film images was subjectively scored on a 5-point scale by two observers,and calculated cardiac function parameters,including left ventricular ejection fraction,and the left ventricular ejection fraction(LVEF),left ventricular end diastolic volume(LVEDV),left ventricular end systolic volume(LVESV),stroke volume(SV),cardiac output(CO)and myocardial mass(MASS).To measure the signal intensi-ty and background noise of blood pool and myocardium,and calculate myocardial CNR.Wilcoxon test and Chi-square test were used to analyze the results of standardized cardiac parameters,myocardial CNR and image quality scores of the two groups.Results The consistency of observer data was good(ICC＞0.75).The subjective score of image quality in group B was 4.450±0.583,higher than that in group A(4.039±0.824,P=0.038).There were no statistically significant differences in SNR and CNR in image center base,center and apex between group A and group B(all P＞0.05),and no statistically significant differences in LVEF,LVEDV,LVESV,SV,CO and MASS between group A and group B(all P＞0.05).The component power of Group A was 74.286％,and the scanning success rate of group B is 100％.Conclusion Free-breathing single-shot CS cine sequence can effectively improve the contrast noise ratio of images,improve image quali-ty,and significantly shorten the scanning time,and has a good clinical application prospect for CMR scanning in patients with arrhythmia.
CMRCompression sensingSingle-shotHeart cineContrast noise ratio
维普
万方数据
