Comparison of Motion-corrected of Phase Sensitive inversion Recovery and Segmented Phase Sensitivity Inversion Recovery in MRI Myocardial Enhancement
10.3969/j.issn.1000-3614.2017.09.018
- VernacularTitle:运动相位纠正技术与节段法相位技术在磁共振心肌延迟增强中的对比研究
- Author:
xia Hong FAN
1
;
Gang YIN
;
ling Xin YANG
;
jie Min LU
;
hua Shi ZHAO
Author Information
1. 空军总医院磁共振科
- Keywords:
Magnetic resonance imaging;
Delayed enhancement;
Myocardial enhancement
- From:
Chinese Circulation Journal
2017;32(9):908-912
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To compare the image quality between motion-corrected of phase sensitive inversion recovery SSFP (PSIR SSFP MOCO) sequences and segmented phase sensitivity inversion recovery turbo fast low angel shot PSIR (PSIR segmented turbo Flash) sequences in MRI myocardial enhancement.Methods:A total of 56 patients with PSIR segmented and PSIR SSFP MOCO for myocardial enhancement were retrospectively studied.Subjective quality score (gradel-4),signal to noise ratio (SNR) and relative SNR of normal myocardium,abnormal enhancement of myocardium and left ventricular chamber images were paired and compared between 2 different LGE techniques.Results:Subjective quality scores in PSIR segmented group were as 4 points 28.6％,3 points 41.1％,2 points 28.6％,1 point 1.8％ respectively.In PSIR SSFP MOCO group,4 points was 96.4％ which was higher than PSIR segmented group,P＜0.001,3 points 3.6％,2 points and 1 point were both 0％.The following SNRs were higher in PSIR MOCO SSFP group than PSIR segmented group as in normal myocardium (4.70±3.47) vs (3.64±3.2),P=0.074;in abnormal myocardium (52.58±36.58) vs (27.65±18.47),P＜0.001 and in left ventrieular chamber (40.52±33.97) vs (23.14±11.46),P＜0.001 respectively.The following relative SNRs were higher in PSIR MOCO SSFP group than PSIR segmented group as in normal to abnormal myocardium (47.46±33.97) vs (23.75±16.68),P＜0.001;abnormal myocardium to left ventricular chamber (8.53±17.77) vs (4.54±10.10),P=0.181 and left ventricular chamber to normal myocardium (35.82±25.72) vs (19.49±9.44),P＜0.001 respectively.Conclusion:Compared with PSIR segmented sequence,PSIR SSFP MOCO technique can obtain better quality of delay-enhanced myocardial images.
