Slater A, Planner A, Bungay H K, Bose P, Milburn S
Department of Radiology, John Radcliffe Hospital, Oxford, UK.
Br J Radiol. 2009 Jul;82(979):545-8. doi: 10.1259/bjr/82959871. Epub 2009 Feb 2.
This study set out to determine whether extending the length of oral contrast administration in minimal preparation CT of the colon improves faecal tagging. Two cohorts of 50 patients each were compared, one with a 2-day the other with a 3-day faecal tagging regimen. The degree of faecal tagging was graded by two blinded observers. The 3-day regimen showed significantly better tagging in the rectum and sigmoid colon (p = 0.006 and p = 0.009, respectively, using the Mann-Whitney test). The percentage of patients who had faecal tagging in the sigmoid colon graded as "complete" was 64% for the 3-day regimen as opposed to 34% for the 2-day regimen. The corresponding percentages for the rectum were 64% for the 3-day regimen and 36% for the 2-day regimen. Extending the length of oral contrast administration from 2 to 3 days significantly improves the quality of faecal tagging in the rectum and sigmoid colon.
本研究旨在确定在结肠低剂量准备CT中延长口服对比剂给药时间是否能改善粪便标记。比较了两组各50例患者，一组采用2天粪便标记方案，另一组采用3天粪便标记方案。由两名盲法观察者对粪便标记程度进行分级。采用曼-惠特尼检验，3天方案在直肠和乙状结肠的标记效果明显更好（分别为p = 0.006和p = 0.009）。乙状结肠粪便标记分级为“完全”的患者，3天方案的比例为64%，而2天方案为34%。直肠的相应比例，3天方案为64%，2天方案为36%。将口服对比剂给药时间从2天延长至3天可显著提高直肠和乙状结肠粪便标记的质量。
