论文部分内容阅读
以CT检查胃肠以往应用较少,这可能与CT的空间分辨率不够精确有关。CT检查胃粘膜清晰度不及钡剂造影,故不宜作为胃、十二指肠的常规检查方法。但利用其良好的对比分辨率、密度区分能力及对解剖学的横切面显像,CT可为胃肠病之诊断提供有价值的辅助性、甚至有独特意义的资料。方法从检查前一日午夜起,限进清流质,以免食物残渣与病变引起之胃壁增厚相混淆。可常规给予口服造影剂,以便区分肠曲、块物及腹腔脓肿。所用造影剂为水溶性碘剂(Gastrografin20ml加水460 ml)或稀钡。某些病例,检查前晚先给造影剂,任其进入大肠,可减少检查大肠所需要的对比剂灌肠次数。扫描前一小时服第
In the past, the use of CT for gastrointestinal examination was less commonly used, which may be related to the inaccurate spatial resolution of CT. CT examination of gastric mucosa is not as clear as barium contrast, it is not as a routine examination of the stomach and duodenum. However, with its good contrast resolution, density differentiation ability and anatomical cross-sectional imaging, CT can provide valuable auxiliary and even unique information for the diagnosis of gastrointestinal diseases. Methods From midnight on the day before the check, limit into the liquid quality, so as not to food debris and lesions caused by the thickening of the stomach confused. Oral contrast agents can be administered routinely to distinguish intestinal song, mass and abdominal abscess. The contrast agent used is water-soluble iodine (Gastrografin20ml water 460ml) or dilute barium. In some cases, contrast agents are given first before the test, allowing them to enter the large intestine to reduce the number of contrast enemas needed to examine the large intestine. One hour before scanning service