Clinical usefulness of MR urography with combination of oral administration of both water and negative oral contrast

我们评估了口服400 ml水和250 ml胃肠道阴性对比剂（Bothdel：氯化锰四水合物）的联合应用对改善图像质量、输尿管可见度和MR尿路造影诊断能力的有效性。在获得增强前MRU后，在给予Bothdel和水后30分钟获得增强后MRU。影像学评价以对比效果、影像效果、浑浊度评分及诊断能力为依据。采用Wilcoxon符号秩检验进行统计分析。无论是对比度、影像效果、浑浊度评分，还是诊断能力，均较术前有统计学意义的改善。

We assessed usefulness of combination of oral administration of both 400 ml of water and 250 ml of negative gastrointestinal contrast (Bothdel: manganese chloride tetra hydrate)to improve image quality , visibility of ureter, and diagnostic ability in MR urography.Magnetic resonance Urography (MRU) was performed in 20 patients with known or suspected urological disease. After precontrast MRU was obtained, postcontrast MRU was obtained 30 minutes after administration of Bothdel and water. Image assessment was based on contrast effect, image effect and opacification score as well as diagnostic ability. Statistical analysis was performed with the Wilcoxon signed rank test. There were statistically significant improvements not only in contrast, image effect and opacification score but also diagnostic ability between pre and post administration images.