胃癌CT分期与治疗前评估Gastric Cancer: CT staging and assessement before treatment胃癌原发灶CT评价CT检查流程n禁食空腹 过夜禁食或大于6小时n低张药物 10-20mg山莨菪碱n气充盈 6g（2包）产气粉n平扫n水充盈 800-1000mln增强扫描 三期 40s 70s 150s*Radiology. 2007 Feb;242(2):472-82胃腔扩张不佳及未禁食对诊断的影响CT检查n气充盈与水充盈气充盈 水充盈T4a分期准确率 87.5% 93.3% P 0.05T1a期准确率 91.1% 85% P 0.05病变检出率94.6%（2D+SSD）75%（2D）78.3%*AJR 2010; 195:13161323CT检查Fig. 239-year-old woman with early gastric cancer (EGC) (pT1a) as seen on gas distention CT scans with IV contrast enhancement.CT检查Fig. 471-year-old ma
