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Multidetector Row CT Accurately Detects Perforated Appendicitis
NEW YORK (Reuters Health) Jan 03 - Multidetector row helical CT allows an accurate diagnosis of appendiceal perforation by imaging a defect in the contrast-enhanced appendiceal wall, according to a report in the January 2008 issue of Radiology.
Recent studies have shown single-section helical CT to be useful in differentiating perforated from nonperforated appendicitis, the authors explain, but the accuracy was not high for any single finding.
Dr. Masahiro Tsuboi from Tohoku University Graduate School of Medicine, Miyagi, Japan and associates retrospectively evaluated the accuracy of multidetector row CT with intravenous contrast material and without oral contrast material for the depiction of perforated appendicitis.
All but 2 of 40 patients with perforated appendicitis had a clearly visualized focal defect in appendiceal wall enhancement, the researchers report, and only 2 of 62 patients with nonperforated appendicitis had false-positive findings for a focal appendiceal wall defect.
The finding of a focal defect was, therefore, 95% sensitive, 96.8% specific, and 96.1% accurate in diagnosing perforation.
By way of comparison, detection of abscess, extraluminal air, and extraluminal appendicolith was 37.5% sensitive, 22.5% specific, and 32.5% accurate in diagnosing perforation, while identification of phlegmon was 40.0% sensitive, 95.2% specific, and 73.5% accurate in diagnosing appendiceal perforation.
\"Multidetector row CT with intravenous contrast material and without oral contrast material could accurately help differentiate perforated appendicitis from nonperforated appendicitis,\" the researchers conclude.
Radiology 2008;246:142-147.
纽约（路透通讯社健康版）1月3日讯 来自2008年1月出版的《放射学》的报道 多排螺旋CT通过对比增强模拟阑尾壁的缺损，可以准确诊断阑尾穿孔
通过对比，诊断阑尾穿孔时，脓肿、外漏气体、阑尾结石的诊断敏感性是37.5%，特异性是22.5%，准确性32.5%，然而诊断阑尾穿孔时阑尾蜂窝织炎的诊断敏感性是40%，特异性是95.2%，准确性73.5% |
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发表于 2008-1-11 16:56:34
