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The Study of Increasing Flip Angle to Improve the Image Contrast on Hepatobiliary Phase of Gd-EOB-DTPA
Author(s): 
Pages: 1903-1906
Year: Issue:  12
Journal: Journal of Clinical Radiology

Keyword:  Magnetic resonance imagingGd-EOB-DTPAFlip angleContrast;
Abstract: 目的 研究增加翻转角(FA)对提高钆塞酸二钠(Gd-EOB-DTPA)肝胆期图像对比度的价值及影响.方法 对54例患者分别行FA 10°、20°及30°的Gd-EOB-DTPA肝胆期成像,对不同FA间的肝脏相对强化值(LRE)、肝-脾比值(LSR)、肝-门静脉比值(LPR)、肝实质-肝占位比值(LLR)、胆管-胰腺比值(BPR)、胆管-肝脏比值(BLR)、腹壁及腹腔脂肪抑制比(FSR)进行对比分析.结果 FA为30°时LSR、LPR、LLR、BPR、BLR值最高,但腹腔和腹壁的FSR最低,FA为20°时LRE值最高,各指标不同FA组间比较均有统计学差异(P<0.05).组内两两比较示,FA 10°和FA 30°的LRE无统计学差异(P>0.05),其余各组组内比较均有统计学差异(P<0.05).此外,FA越大,LSR、LPR、LLR、BPR、BLR值越高,而FSR越低.结论 增加FA能增加Gd-EOB-DTPA肝胆期肝实质、肝内病灶及胆管的对比度,但同时会降低腹壁和腹腔脂肪抑制效果.
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