Objective To assess the role of dynamic contrast-enhanced magnetic resonance imaging(DCE-MRI) at 3.0 Tesla in the distinguishing prostate cancer(PC) from benign prostatic hyperplasia(BPH).Methods Thirty patients with prostate cancer and 32 patients with benign prostatic hyperplasia underwent conventional MRI and DCE-MRI using 3D VIBE sequences at 3.0 Tesla.The DCE-MRI signal intensity and the characteristics of signal intensity-time curve were analysed emphatically and the statistical analysis was performed.Results On the basis of the enhancement parameters of SI-T curve,the peak time of Pca was earlier than that of BPH,and the enhancement degree and enhancement rate of Pca were higher than those of BPH(P0.05).The SI-T curve signal intensity of prostate cancer featured mainly as washout type while that of BPH appeared as steady enhancement type.Conclusion Dynamic contrast-enhanced magnetic resonance imaging plays an important role in the differential diagnosis of benign prostate hyperplasia and prostate cancer.
目的分析肾结核的CT表现,探讨肾结核CT诊断价值。方法回顾性分析26例经手术病理证实或其它辅助检查及随访证实的肾结核病人多层螺旋CT表现。结果26例肾结核依病情发展的不同阶段而出现不同的CT表现。CT像围绕肾盂排列的囊状或"花瓣"状的多发低密度影,肾盂肾盏黏膜增厚及其狭窄与扩张并存,输尿管壁的弥漫性增厚,肾斑点片状钙化及肾自截是肾结核特征性表现。同时CT可明确患肾功能、破坏程度、肾积水、患肾外形以及是否合并肾外浸润,为临床提供更多有价值参考资料。结论CT检查对提高肾结核诊断水平具有很高的价值,是目前临床诊断肾结核的最佳方法。
Objective To evaluate MSCT scan in the diagnosis of renal parenchymal small mass.Methods The MSCT scan datum and pathologic findings of 33 patients of renal parenchymal small mass(3 cm or less in diameter)pathologically proved by operation or follow-up records were retrospectively analyzed.Results MSCT showed the results of 18 cases of small renal cell carcinoma,9 cases of renal angiomyolipoma,3 cases of atypical renal cyst,1 case of renal cystic adenoma and 2cases of renal abscess.Conclusion The MSCT scan is a very valuable method in qualitative diagnosis of renal parenchynal small mass.
目的研究探讨磁共振尿路造影在临床常见梗阻性尿路疾病中的应用价值.方法应用西门子Vision1.5T超导型磁共振仪器对36例梗阻性尿路疾病患者进行磁共振尿路造影检查.结果磁共振尿路造影对梗阻性尿路疾病梗阻程度及位置均清晰显示,并对梗阻原因定性有较高的准确性.结论磁共振尿路造影能为梗阻性尿路疾病提供无创伤性、简便安全、可靠的检查手段而得到广泛应用.
目的：探讨主动脉夹层在磁共振成像上的表现及其临床应用价值。方法：应用西门子Vision 1.5T超导型磁共振机器对23例主动脉夹层患者进行检查、分析。 结果：磁共振成像能清楚显示所有23例的主动脉夹层剥离内膜片及真假腔 ，并作出准确分型；12例显示内膜裂口，6例示分支动脉受累。结论： 磁共振成像为主动脉夹层提供较全面诊断信息，因其无创伤、简便、可重复检查，可作为 首选影像学检查方法，具有较高临床应用价值。
目的：探讨临床常见脑血管病颅脑MRA表现及其临床应用价值。方法：采用西门子Vision 1.5T超导型磁共振仪对63例颅脑常见脑血管病患者进行MRA检查。结果：MRA能清楚显示颅内主要血管形态，并展示颅脑常见血管疾病的异常改变：其中脑动脉瘤20例，脑血管畸形36例，脑动脉栓塞3例，脑动脉硬化5例。结论：颅脑MRA能为临床常见颅脑血管病提供无创伤性简便检查手段，而得到广泛应用。
