口服胃肠道造影对比剂在MRI中的应用

目的：研究应用口服胃肠道对比剂后，腹部MRI检查图像质量的改善。材料和方法：以葡萄糖酸亚铁糖浆溶液为对比剂，经体外试验确定适宜的浓度；并进行临床试验，将50例受检者随机分为2组，分别口服葡萄糖酸亚铁糖浆溶液和水作为胃肠道对比剂，采用FSE序列，横断面T1WI，PWI，T2WI，所得图像与水作为对比剂时的图像对比研究。结果：以葡萄糖酸亚铁糖浆溶液作对比剂时，在T1WI，PWI，T2WI上，胃肠道均呈现高信号，胃肠道结构及腹部实质脏器显示清晰，优于以水作为胃肠道对比剂时的图像。结论：使用合适的胃肠道对比剂，可以使腹部脏器得到更好显示。

Oral Positive Gastrointestinal Contrast Agent for MRI of The Upper Abdomen

Purpose:To study the image quality of the upper abdomen after orally taken positive gastrointestinal contrast agent.Materials and Methods:Ferrous gluconate syrup as contrast agent,the suitable concentration was tested in vitro.And clinical experiments were studied in fifty patients with two groups in random.Each group orally taken contrast agent either ferrous gluconate syrup solutions or water as control.FSE sequence was performed in axial T1WI,PWI,T2WI.The images were evaluated in compare.Results:The signals of the gastrointestinal tract were high density in T1WI,PWI and T2WI when orally taken ferrous gluconate syrup solutions.The gastrointestinal lumen,the adjacent structure and organs were shown clearly.The images were much better than that orally taken water as contrast agent.Conclusion:Better images could get in MRI of the upper abdomen when suitable oral positive gastrointestinal contrast agent was adopted.