3.0T MR对早期前列腺癌的诊断价值

目的：探讨3.0T MR在早期前列腺癌诊断中的价值。方法：回顾性分析经手术病理和穿刺活检证实的12例早期前列腺癌患者的常规序列、DWI及动态增强扫描表现。结果：12例早期前列腺癌患者中，病变均位于包膜内。T2WI抑脂像8例表现为T2WI外周带内异常低信号区，4例表现为中央带稍高信号，DWI序列10例呈高信号，2例等信号。LAVA多期动态增强扫描8例病灶于动脉期明显强化，平衡期为低信号，3例呈持续渐进性强化，1例动脉期强化不明显。结论：3.0T MR的常规T2WI序列、DWI及动态增强扫描在早期前列腺癌诊断中具有特征性表现，联合应用具有明确的诊断价值。

Early diagnosis of prostatic cancer on 3.0T MR system

Objective：To study the early diagnostic value of 3.0T MR in prostatic cancer.Methods：To analyse the MR features in 12 cases of early prostatic cancer confirmed by surgery pathology,and needle biopsy.Conventional sequence,DWI and dynamic contrast enhanced scanning were performed.Results：The lesions of the 12 early prostatic cancer cases were all located in the capsule,T2WI fat suppression showed abnormal low signal within the peripheral zone in 8 cases,the other 4 cases showed slightly higher signal in the central zone,DWI sequence in 10 cases showed high signal,2 cases showed isointense signals.LAVA multi-phase dynamic contrast-enhanced scans showed the lesions were obviously enhanced in the arterial phase,low signal in the balance period,in 8 cases 3 cases were continually and progressively enhanced;one case was not obviously enhanced in the arterial phase.Conclusion：3.0T MR conventional T2WI sequences,DWI and dynamic contrastenhanced imaging have characteristic MR features and important diagnostic value for early prostatic cancer.