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目的探讨磁共振在前列腺癌诊断中的应用价值。方法回顾性分析应用1.5T超导型磁共振检查的39例前列腺癌患者的成像资料,并与临床病理进行对照。采用腹部相控阵线圈,行轴位、冠状位T1WI和T2WI常规扫描和脂肪抑制扫描。结果应用腹部相控阵线圈检查前列腺可以获得清晰的图像,初发型前列腺癌21例,复发型18例,初发型前列腺癌在T2WI表现为正常外周带的高信号内出现低信号结节,复发型前列腺癌在T1WI和T2WI均表现为不规则的等信号团块影。13例病灶局限于包膜内。诊断初发型前列腺癌的敏感度为85%,特异度为77%。磁共振诊断复发型前列腺癌的敏感度为89%,特异度为81%。结论磁共振易于观察前列腺癌侵犯周围组织情况,是诊断复发型前列腺癌较好的成像方法,但诊断初发型前列腺癌的特异性有待进一步提高。
Objective To explore the value of magnetic resonance in the diagnosis of prostate cancer. Methods The imaging data of 39 cases of prostate cancer with 1.5T superconducting MR imaging were retrospectively analyzed and compared with the clinicopathological features. Abdominal phased-array coils, axial and coronal T1WI and T2WI routine scans and fat suppression scans were performed. Results Abdominal phased array coil examination of the prostate can be a clear image, 21 cases of primary prostate cancer, recurrent 18 cases of primary prostate cancer in T2WI showed normal peripheral zone high signal within the low signal nodules, recurrent Prostate cancer in T1WI and T2WI showed irregular signal equal block shadow. Thirteen lesions were confined to the capsule. The sensitivity of initial diagnosis of primary prostate cancer was 85% and the specificity was 77%. The sensitivity and specificity of MRI in the diagnosis of recurrent prostate cancer were 89% and 81% respectively. Conclusion MRI is easy to observe the surrounding tissue invasion of prostate cancer is a good imaging method for the diagnosis of recurrent prostate cancer, but the specificity of diagnosis of primary prostate cancer needs further improvement.