磁共振不同成像序列检查子宫内膜癌的比较

Comparison of Different Magnetic Resonance Imaging Sequences in the Diagnosis of Endometrial Cancer

目的探讨子宫内膜癌磁共振成像(Magnetic Resonance Imaging,MRI)检查中不同序列的诊断价值。材料和方法回顾分析30例经病理证实的子宫内膜癌患者的MRI图像,采用(FSE)横轴位T1W1、T2WI脂肪抑制(fs)、EPI—DWI;矢状位、冠状位T2WI脂肪抑制(fs)和矢状面子宫容积超快速的三维成像序列(LAVA)多期动态增强扫描,比较不同序列在子宫内膜癌检查中的应用价值。结果 30例患者的图像质量满意,达到诊断要求。T1WI、T2WI-fs、DWI和3D-LAVA动态增强序列对子宫内膜癌的总检出率分别为77%、86%、93%和100%。动态增强扫描能清晰显示子宫的形态、内膜厚度、结合带的完整性和肌层的浸润程度。结论在子宫内膜癌MRI检查中FSE T1WI、T2WI-fs是常规序列,DWI是必不可少的序列,3D-LAVA动态增强扫描序列对子宫内膜癌的检出和诊断起决定性作用。

Objective To explore the value of different Magnetic Resonance Imaging sequences in the diagnosis of endometrial cancer.Methods MRI images of 30 cases with pathologically confirmed endometrial cancer were retrospectively analyzed. Axial T1W1 （FSE）, T2WI fat suppression （fs）, EPI-DWI, sagittal and coronal fat-suppressed T2WI （fs） and sagittal volume imaging sequence （LAVA） in multi-phase dynamic enhanced MRI were used, and the value of different Magnetic Resonance Imaging sequences in the diagnosis of endometrial cancer were compared.Results The quality of all images achieved the reqmrement. The detection rate of endometrial cancer by T1WI, T2WI-fs, DWI and dynamic contrast-enhanced sequence （LAVA） were 77%, 86%, 93% and 100% respectively. Dynamic enhanced MRI scanning could show the shape of uterus, endometrial thickness, integrity, of uterine junction zone and myometrial invasion clearly. Conclusion FSE T1WI, T2WI-fs are regular sequences and DWI is an essential sequence in the diagnosis of endometrial cancer. 3D-LAVA dynamic enhanced MRI plays an important role in the detection and diagnosis of endometrial cancer.