磁共振成像检查中不同b值弥散加权成像对前列腺癌的应用价值

The application value of different b value diffusion-weighted imaging of prostate cancer in MRI examination

目的:探讨T2WI及不同b值的弥散加权成像(DWI)技术对前列腺癌的诊断价值。方法:回顾性分析29例经穿刺活检证实的前列腺癌患者的磁共振成像(MRI)资料,29例前列腺癌患者均行轴位T2WI及中b值(b=1000 s/mm^2)DWI扫描,其中21例同时行超高b值(b=2500 s/mm^2)DWI扫描,由2位MR医师分别阅片并协商判定T2WI和不同b值DWI的诊断结果。结果:超高b值(b=2 500 s/mm^2)DWI的前列腺癌确诊率为80.95%,中b值(b=1000 s/mm^2)DWI的确诊率为72.41%,超高b值DWI的前列腺癌确诊率最高。结论:超高b值DWI能够提高前列腺癌检出率及诊断准确性,具有良好的临床应用价值。

Objective：To explore the diagnostic value of diffusion-weighted imaging （DWI） technique for two factors of T2WI and different b value in the diagnosis of prostate cancer. Methods： 29 cases of prostate cancer confirmed by biopsy were analyzed retrospectively, who underwent axial T2WI and DWI scanning for b value （1000 s/mm2）. Of them, 21 cases performed DWI scanning for ultra high b value（2500 s/mm2）. 2 magnetic resonance（MR） doctors interpreted the imagine separately and consulted together to determine T2WI value and diagnostic result of DWI in different b value.Results： The diagnosis rate of DWI scanning for prostate cancer in ultra high b value （2500 s/mm2） was 80.95%. The diagnosis rate of DWI scanning in b value （1000 s/mm2） was 72.41%. The diagnosis rate of DWI scanning in ultra high b value （2500 s/mm2） was the highest.Conclusion： DWI scanning in ultra high b value （2500 s/mm2） can improve the detection rate and accuracy of diagnosis for prostate cancer. It has a good value for clinical application.