Effects of Different Acceleration Factors of Compressed Sensing on the Imaging Quality of Cardiac Magnetic Resonance Cine Sequences
10.3969/j.issn.1005-5185.2024.06.010
- VernacularTitle:压缩感知不同加速因子对心脏磁共振电影序列成像质量的影响
- Author:
Linlin WANG
1
;
Kewu HE
;
Ren ZHAO
;
Honglin YU
;
Ruoyu SUN
;
Yinfeng QIAN
;
Xiaohu LI
;
Yongqiang YU
Author Information
1. 安徽医科大学第三附属医院(合肥市第一人民医院)影像中心,安徽 合肥 230000
- Keywords:
Cardiac magnetic resonance;
Compressed sensing;
Imaging quality assessment;
Ventricular function,left;
Myocardial thickness
- From:
Chinese Journal of Medical Imaging
2024;32(6):581-586
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To explore the effect of compressed sensing(CS)technique with different acceleration factors on the quality of cardiac magnetic resonance cine sequences and feasibility of clinical application.Materials and Methods From January to July 2021,40 healthy volunteers were prospectively recruited for cardiac magnetic resonance cine imaging in Hefei First People's Hospital.Four scan protocols of volunteers were designed:SENSE 2 and CS-cine sequences with acceleration factors of 3,4 and 8.The imaging slices include four chamber heart,short axis heart,left ventricular two chamber heart and three chamber heart.Subjective score of image quality,left ventricular cardiac function and 16-segment myocardial thickness of SENSE 2 and CS3,CS4 and CS8 were compared and analyzed.Results Taking SENSE 2 image as the standard score of 5,the scores of CS3 and CS4 were above 3,and the scores of CS8 were below 3.There was no significant difference between the scores of four chamber heart and short axis heart images of CS3 and SENSE 2 sequence(all P>0.05).There were statistically significant differences in the subjective scores of image quality between the left ventricular two chamber heart and three chamber heart groups of each sequence(all P<0.05).There was no statistically significant difference in left ventricular function(left ventricular ejection fraction,left ventricular end systolic volume,left ventricular end diastolic volume,left ventricular stroke volume,left ventricular end-diastolic mass)(F=0.027,0.182,0.057,0.140,0.545)and myocardial thickness(F=0.052-7.366)among the four imaging schemes(all P>0.05).Conclusion Cardiac cine based on compressed sensing technology have good application prospects.With the increase of acceleration factors,the scanning time gradually decreases,and the corresponding image quality will also decrease.When the acceleration factor is 4,that is,the scanning time of the conventional cine sequence is reduced by 50%,the left ventricular function and myocardial thickness can still be accurately measured,and the image quality basically meets the diagnostic requirements.
