The value of three-point localization method for four-chamber view acquisition in cardiac magnetic resonance imaging
- VernacularTitle:三点定位技术在心脏MRI四腔心成像中的应用价值
- Author:
Lihong CHEN
1
;
Tingting QU
;
Le CAO
;
Yanan LI
;
Ganglian FAN
;
Bing LIU
;
Zhijie JIAN
;
Jianxin GUO
Author Information
- Keywords: cardiac magnetic resonance(CMR)imaging; three-point localization method; four-chamber view; speed of imaging; image quality
- From: Journal of Xi'an Jiaotong University(Medical Sciences) 2024;45(3):491-496
- CountryChina
- Language:Chinese
- Abstract: Objective To evaluate the application value of the three-point localization method in improving the quality and efficiency of four-chamber view acquisition in cardiac magnetic resonance(CMR)imaging.Methods A total of 215 patients who underwent four-chamber view in CMR imaging from January 2022 to October 2023 were retrospectively enrolled and divided into two groups.The control group(n=109)received traditional localization method while the study group(n=106)received three-point localization method.The image quality of mitral valve,tricuspid valve and cruciform structure in four-chamber view images were assessed by two radiologists using a Likert 4-piont scale.The time-consumption from scout imaging to the finish of four-chamber view imaging was recorded.Constituent data and numeral data were compared by Chi-square test and two-sample t test,respectively.Kappa test was used to analyze the inter-observer consistency.Results There were no significant inter-group differences in gender,age,disease profile,or the radiographers'experience.The mean quality scores of the mitral valve,tricuspid valve and cruciform structure in the control group and the study group were 3.44±0.64 and 3.63±0.49(P=0.023),3.43±0.67 and 3.53±0.60(P=0.202),3.71±0.49 and 3.83±0.35(P=0.047),respectively.The image quality score was higher in the study group than in the control group,with the differences in mitral valve and cruciform structure reaching statistical significance.The time-consumption for obtaining four-chamber view for the control group and the study group was 11.67±3.49 minutes and 7.212±1.83 minutes,respectively,with statistically significant differences(P＜0.001).Conclusion Compared with the traditional localization method,the three-point localization method provides better image quality in four-chamber view imaging with shortened imaging time.
