Objective:To investigate the value of multi-arterial phase acquisition for image quality of hepatic-specific contrast-enhanced MRI in the late arterial phase.Methods:A retrospective analysis was performed on 86 patients who underwent hepatic-specific contrast-enhanced MRI due to hepatic space-occupying lesions.42 patients underwent liver mono-arterial phase(only one phase in arterial phase)free breathing imaging using Star-VIBE sequence(the Star-VIBE group),and 44 patients underwent liver multi-arterial phases(five phases in arterial phase)breath-holding imaging using CDT-VIBE sequence(the CDT-VIBE group).The image capture rate in the late arterial phase,the respiration motion artifacts and the detection rate of small lesions were compared between the two groups.Results:The image capture rate in the late arterial phase of the CDT-VIBE group was significantly higher than that of the Star-VIBE group(χ2=17.672,P<0.05).Among the five phases of CDT-VIBE,the fourth phase had the highest capture rate in the late arterial phase(65.9%,29/44).The CDT-VIBE group was significantly better than the Star-VIBE group regarding respiration motion artifacts score,and the difference was statistically significant(H=-4.323,P<0.05).The respiratory motion artifacts score in the third phase was better than that in the first phase(P=0.045).The detection rate of small lesions in the CDT-VIBE group was higher than that in the Star-VIBE group.Conclusions:Compared with the Star-VIBE sequence,CDT-VIBE sequence can obtain the better quality images in the late arterial phase in hepatic-specific contrast-enhanced MRI.
国家科技期刊平台
NSTL
万方数据
