良性局灶性前列腺疾病的多模态磁共振成像诊断价值  

Diagnostic value of multimodal magnetic resonance imaging in benign focal prostate diseases

作　　者：张艺军[1] 刘琳[1] 吕苇 刘立[1] Zhang Yijun;Liu Lin;Lyu Wei;Liu Li(Department of Radiology,the People Liberation Army 305 Hospital,Beijing100017,China)

机构地区：[1]中国人民解放军305医院放射科,北京100017

出　　处：《实用医学影像杂志》2021年第2期124-126,共3页Journal of Practical Medical Imaging

摘　　要：目的探讨良性局灶性前列腺疾病的多模态磁共振成像(MRI)诊断价值。方法收集我院2017年9月至2019年11月收治的34例良性局灶性前列腺病变患者临床资料,回顾性分析其MR常规序列、肝脏容积快速扫描(LAVA)及磁共振弥散加权成像(DWI)动态增强检查特征,其中良性前列腺增生14例,囊肿7例,炎症4例,脓肿2例,结石7例,分析各类病变的信号特征。结果良性前列腺增生结节14例表现为前列腺不同程度增大并中央区多发信号不均结节,部分可见假包膜,DWI呈等或稍高信号,增强呈不同程度强化;囊肿7例表现为类圆形长T_(1)或稍短T_(1)及长T_(2)信号,囊壁薄,DWI呈低信号,增强无对比强化;炎症4例,病灶呈弥漫或非结节样等T_(1)WI及稍短T_(2)WI信号,DWI呈略高信号,增强动脉晚期均匀强化;脓肿2例表现为前列腺增大伴稍长T_(1)长T_(2)异常信号区,DWI呈高信号,增强呈厚壁强化伴分隔;结石7例表现为长T_(1)或短T_(1)及短T_(2)信号,DWI呈低信号,无强化。结论多模态MR成像可以显著提高前列腺良性局灶性疾病的诊断准确率。Objective To explore the diagnostic value of multimodal MRI in benign focal prostate diseases.Methods Thirty-four cases with benign focal prostate in our hospital from September 2017 to November 2019 were selected,including 14 cases with benign prostatic hyperplasia,7 cases with prostatic cyst,4 cases with inflammation,2 cases of prostaticabscess,and 7 cases with calculuses.Retrospective analyses of signal characteristics of various lesions on MR routine sequence,DWI and LAVA dynamic contrast examination were employed.Results 14 cases′s benign prostatic hyperplasia showed enlarged prostate and varying signal nodules in the central gland,pseudocapsules in some cases,isointense or slight hyperintense on DWI,and different degrees of enhancement on contrast.7 cases′s prostatic cysts showed round-like T_(1) hypointensity or slight hyperintensity and T_(2) hyperintensity with the thin cyst wall,hypointense on DWI and no enhancement on contrast.In 4 cases of inflammation,the lesions showed diffuse or non-nodular T_(1) isointensity and slight T_(2) hypointensity,slight hyperintense on DWI,homogeneous enhancement on late arterial phase.Two cases of prostaticabscessshowed enlarged prostate with slight T_(1) hypointensity and signal abnormalities on T_(2),hyperintense on DWI and enhenced thick-wall lesion with separation on contrast.7 cases′s calculuses showed T_(1) hypointensity and T_(2) hypointensity,hypointense on DWI and no enhancement on contrast.Conclusion Multimodal MRI can significantly improve the diagnostic accuracy of benign focal prostate Diseases.

关 键 词：前列腺疾病 多模态 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R697.3[医药卫生—诊断学]