MRI人工智能辅助压缩感知心脏电影序列在心功能评估中的应用价值  

The Value of MRI Artificial Intelligenceassisted Compression-aware Cardiac Cine Sequences in Cardiac Function Assessment

作　　者：范伟雄[1] 张添辉 钟炜[2] 钟鑫威 张文巨 张昭男 程亚宝[1] 钟志雄[2] FAN Wei-xiong;ZHANG Tian-hui;ZHONG Wei;ZHONG Xin-wei;ZHANG Wen-ju;ZHANG Zhao-nan;CHENG Ya-bao;ZHONG Zhi-xiong(Department of MRI,Meizhou People's Hospital,Meizhou 514031,Guangdong Province,China;Department of Cardiology,Meizhou People's Hospital,Meizhou 514031,Guangdong Province,China)

机构地区：[1]梅州市人民医院磁共振科 [2]梅州市人民医院心内科,广东梅州514031

出　　处：《中国CT和MRI杂志》2024年第9期79-81,共3页Chinese Journal of CT and MRI

基　　金：国家高性能医疗器械创新中心开放基金项目(NMED2021MS-01-002)。

摘　　要：目的探讨MRI人工智能辅助压缩感知(ACS)心脏电影(cine)序列在心功能评估中的应用价值。方法本研究连续纳入2022年5月至12月在我院行心脏MRI检查的63例受检者。所有受检者均进行常规cine和ACS-cine两种序列扫描,采用5分法进行图像质量评价。应用Wilcoxon符号秩检验对2种心脏cine序列的扫描时间、图像质量评分及心室功能定量参数进行比较。采用Spearman相关分析和BlandAltman分析评价两种序列测量心室功能定量参数的相关性和一致性。结果常规cine与ACS-cine序列扫描时间差异具有统计学意义(Z=-6.904,P<0.001),后者可将扫描时间大幅缩短约92.82%。常规cine与ACS-cine序列图像质量评分差异无统计学意义(Z=-0.816,P>0.05)。在心功能定量参数评估方面,常规cine与ACS-cine序列之间的LVEF、LVESV、RVEF、RVEDV、RVESV参数差异无统计学意义(P均>0.05),但LVEDV参数存在统计学差异(Z=-2.958,P<0.05)。常规cine与ACS-cine序列之间的心功能定量参数(LVEF、LVEDV、LVESV、RVEF、RVEDV、RVESV)均有良好的相关性(r=0.865~0.963,P均<0.01)。Bland-Altman分析显示,常规cine与ACS-cine序列图像获取的左心室及右心室功能定量参数(LVEF、LVEDV、LVESV、RVEF、RVEDV、RVESV)平均差异均接近于零,且变异范围很小,一致性高。结论相较于常规cine序列,ACS-cine序列能显著缩短成像时间的同时保证图像质量,并可准确分析左心室及右心室功能定量参数,具有较高的临床应用价值。Objective To investigate the value of MRI artificial intelligence-assisted compressed sensing(ACS)cardiac cine(cine)sequence in cardiac function assessment.Methods Sixty-three subjects who underwent cardiac MRI in our hospital from May to December 2022 were consecutively included in this study.All subjects were scanned with both conventional cine and ACS-cine sequences,and image quality was evaluated using a 5-point scale.The Wilcoxon signed rank test was applied to compare the scan time,image quality scores and ventricular function results of the 2 cardiac cine sequences.Spearman correlation analysis and Bland-Altman analysis were used to evaluate the correlation and consistency of the two sequences for measuring cardiac function.Results The difference in scan time between the conventional cine and ACS-cine sequences was statistically significant(Z=-6.904,P<0.001),with the latter significantly reducing scan time by approximately 92.82%.The difference in image quality scores between conventional cine and ACS-cine sequences was not statistically significant(Z=-0.816,P>0.05).There was no statistically significant difference in LVEF,LVESV,RVEF,RVEDV,and RVESV parameters between conventional cine and ACS-cine sequences(all P>0.05),but there was a statistically significant difference in the LVEDV parameter(Z=-2.958,P<0.05).Quantitative cardiac function parameters(LVEF,LVEDV,LVESV,RVEF,RVEDV,RVESV)were all well correlated between conventional cine and ACScine sequences(r=0.865-0.963,all P<0.01).Bland-Altman analysis showed that the mean differences in quantitative parameters of LV and RV function(LVEF,LVEDV,LVESV,RVEF,RVEDV,RVESV)obtained from conventional cine and ACS-cine sequence images were all close to zero with a small range of variation and high agreement.Conclusion Compared with conventional cine,ACS-cine can significantly shorten the imaging time while guaranteeing the image quality,and can accurately analyze the LV and RV functions,which has high clinical application value.

关 键 词：磁共振成像 人工智能 压缩感知 心脏电影成像 心功能分析 

分 类 号：R445.2[医药卫生—影像医学与核医学] R542.2[医药卫生—诊断学]