前列腺中央腺体偶发癌的MRI初步研究

目的探讨前列腺中央腺体偶发癌的常规MRI表现、MR波谱（MRS）代谢特征及其在扩散加权成像（DWI）上的表现。方法对9例行尿道前列腺切除术（TURP）的前列腺中央腺体偶发癌患者做回顾性分析,观察其常规MR表现及其在MRS和DWI上的表现,测量中央腺体的（胆碱＋肌酸）/枸橼酸盐[（Cho＋Cre）/Cit,CC/C]比值、中央腺体表观扩散系数（apparent diffusion coefficient,ADC）值及最小ADC值。结果前列腺中央腺体偶发癌的CC/C值平均为1.04±0.28,范围为0.65～1.45;中央腺体ADC值平均为（1.48±0.18）×10-3mm2/s,范围为（1.16～1.67）×10-3mm2/s;最小ADC值平均为（1.15±0.10）×10-3mm2/s,范围为（0.99～1.25）×10-3mm2/s。结论 MRS和DWI对于前列腺中央腺体偶发癌的诊断具有一定的局限性。-

MR imaging of incidentally detected prostate carcinoma in the central gland of prostate:preliminary study

Objective：To evaluate the conventional MR imaging,MR spectroscopy （MRS） and diffusion-weighted imaging （DWI） of incidentally detected prostate carcinoma in the central gland of prostate.Materials and Methods：The clinical and imaging data of 9 patients with incidentally detected prostate carcinoma （IDPC） who underwent transurethral resection of the prostate were analyzed retrospectively.The manifestation of conventional MRI,MRS and DWI were observed,the corresponding value of （Cho＋Cre）/Cit（CC/C）,the ADC value of the central gland and the minimal ADC value were calculated.Results：The mean CC/C value of IDPC was 1.04±0.28,and the range of it was 0.65-1.45.The mean and the range of the ADC value of the central gland were （1.48±0.18）×10-3 mm2/s and （1.16-1.67）×10-3 mm2/s.The mean and the range of the minimal ADC value were （1.15±0.10）×10-3 mm2/s and （0.99-1.25）×10-3 mm2/s.Conclusion：MRS and DWI have some limitations in the diagnosis of the incidentally detected prostate carcinoma in the central gland of prostate.