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目的确定在自动管电流调制技术低剂量CT结肠成像普查中标记粪便与液体量是否显著影响X线曝光。方法 311例病人纳入研究。标记剂为钡(n=271)或碘(n=40)。测算
Objectives To determine if the amount of labeled feces and fluid in a low-volume CT colonography survey of automated tube current modulation techniques significantly affects X-ray exposure. Methods 311 patients were included in the study. The labeling agent is barium (n = 271) or iodine (n = 40). Calculated