目的 探讨高分辨率CT多平面重建对疑似急性阑尾炎(acute appendicitis, AA)患者诊断的临床应用价值。方法 对138例疑似AA患者,进行高分辨率CT扫描,观察组根据常规轴位高分辨率CT( high resolution CT, HRCT)图像结合多平面重建(multi-planar reformation,MPR)后处理技术进行诊断;对照组仅根据CT轴位图像做出诊断。两组诊断结果分别与术后病理结果或出院诊断进行对比分析。结果 138例疑似AA患者,病理结果显示123例阳性、15例阴性。观察组:真阳性120例,真阴性13例,误报2例,漏报3例。对照组:真阳性104例,真阴性7例,误报8例,漏报19例。结果显示观察组的诊断敏感性、特异性、准确性、阴性预测值均优于对照组,差异有统计学意义(P<0.05),而在阳性预测值上两组对比无明显统计学差异。结论 高分辨率CT的多平面重建技术能够提高临床对疑似AA患者确诊的能力,具有单独辅助诊断价值。
Abstract
Objective To evaluate the clinical value of multi-planar reconstruction with high resolution CT in the diagnosis of suspected acute appendicitis.Methods High resolution CT scanning was performed on 138 military patients with suspected acute appendicitis. The observation group were diagnosed according to conventional axial CT image combined with multi-planar reconstruction post-processing technology. In the control group, the diagnosis was only based on CT axial images. The diagnosis results of the two groups were compared with postoperative pathological results or discharge diagnosis.Results Among 138 military patients with suspected acute appendicitis, the pathological results showed that 123 patients were positive and 15 patients were negative. Observation group: true positive in 120 cases, true negative in 13 cases, false negative in 2 cases, false positive in 3 cases. Control group: true positive in 104 cases, true negative in 7 cases, false negative in 8 cases, false positive in 19 cases. The results of statistical analysis showed that the diagnostic sensitivity, specificity, accuracy and negative predictive value of the observation group were better than those of the control group(P<0.05), while there was no significant difference in positive predictive value between the two groups.Conclusions The multi-planar reconstruction technique of high resolution CT which can improve the clinical diagnosis ability of suspected acute appendicitis is characterized by independent auxiliary diagnostic value.
关键词
体层射影术 /
X线计算机 /
阑尾炎 /
多平面重建 /
诊断
Key words
tomography /
X-ray computed /
appendicitis /
multi-planar reconstruction /
diagnosis
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