【摘要】 目的:评价多层CT结肠镜(CTC)用于结肠息肉诊断的临床价值。方法:采用多层螺旋CT(16/64)扫描及专业图像处理技术,以结肠镜检查为金标准。结果:回顾性分析了42例行CTC并结肠镜检查的临床怀疑结肠息肉或要求行结肠疾病筛查患者的临床资料。依据诊断性试验统计学方法,分为息肉组和患者组,其中息肉组再按直径分为≤5mm、5～10mm和≥10mm3组分别为68.8%/41.5%、93.8%/65.2%和100%/92.9%。患者组的敏感度、阳性预测者、特异度、阴性预测值及准确度分别为97.1%、89.5%、42.9%、75.0%和88.1%。结论:CTC图像能清晰准确显示出息肉形态,可作为临床息肉筛选的常规方法。更多还原

【Abstract】 Objective:To assess the clinical values of MSCT colonography(CTC)in the diagnosis of colonic polyps.Methods:42 patients who were clinically suspicious of colonic polyps or underwent colonic polyps screening received both CTC and conventional colonoscopy.16 or 64-slice spiral CT and professional imaging processing techniques were used for evaluation.Per-polyp and per-patient results were analyzed.Those by per-polyp were subsequently divided into≥10 mm group,5～10 mm group,and ≤5 mm group.Sensitivity,positive predicitive value(PPV),specificity,negative predicitive value(NPV),and accuracy were calculated using statistical method for diagnostic studies,with conventional colonoscopy as a gold standard.Results:90 and 61 polyps were found by CTC and conventional colonoscopy,respectively.Sensiticity and PPV were 80.3%55.6% by per-poylp and 100%92.9%,93.8%65.2%,and 68.8%41.5% in the≥10 mm group,5～10 mm group,and ≤5 mm group respectively.Sensitivity,PPV,specifity,NPV,and accuracy by per-patient were 97.1%,89.5%,42.9%,75.0%,and 88.1%,respectively.Conclusion:CTC can clearly reveal the morphology of colonic polys and can be used as a routine monitoring method for the clinical diagnosis of polyps.更多还原