Department of Radiology, Aga Khan University Hospital, Stadium Road, Karachi 74800, Pakistan.
Jpn J Radiol. 2012 Apr;30(3):235-41. doi: 10.1007/s11604-011-0038-3. Epub 2011 Dec 14.
To determine the accuracy of 64-slice multidetector computed tomography scans in detecting the point of transition of small bowel obstruction by using surgical findings as the gold standard.
Cross-sectional study of 59 patients with SBO who underwent 64-slice MDCT scans of the abdomen followed by surgery from 1 June 2008 to 31 January 2010 at a tertiary care center. Point of transition between distended and collapsed small bowel loops were precisely determined on 64-slice MDCT and subsequently correlated with surgical findings. Data analysis was done on SPSS version 16. Sensitivity, specificity, positive and negative predictive values, and diagnostic accuracy of MDCT in detection of the point of transition were calculated.
Out of 59 patients, 64-slice MDCT was able to detect the point of transition of SBO in 90% (53/59) of patients, while in 10% (6/59) of these patients the point of transition was not found on MDCT. Overall for detection of the point of transition of small bowel obstruction 64-slice MDCT has 93% sensitivity, 67% specificity, 98% positive predictive value, 33% negative predictive value and 92% accuracy, respectively.
Sixty-four-slice MDCT is highly accurate in diagnosing the point of transition of small bowel obstruction with an accuracy of 92%. It can be used as a localizing tool before surgery for small bowel obstruction.
以手术结果为金标准，确定 64 层多排螺旋 CT 扫描检测小肠梗阻转折点的准确性。
对 2008 年 6 月 1 日至 2010 年 1 月 31 日在一家三级保健中心因小肠梗阻接受 64 层 MDCT 腹部扫描并随后接受手术的 59 例患者进行了横断面研究。在 64 层 MDCT 上精确确定扩张和塌陷的小肠环之间的转折点，并与手术结果进行相关性分析。使用 SPSS 版本 16 进行数据分析。计算 MDCT 检测转折点的敏感性、特异性、阳性预测值、阴性预测值和诊断准确性。
在 59 例患者中，64 层 MDCT 能够在 90%（53/59）的患者中检测到 SBO 的转折点，而在这 10%（6/59）的患者中，MDCT 上未发现转折点。总体而言，64 层 MDCT 检测小肠梗阻转折点的敏感性为 93%、特异性为 67%、阳性预测值为 98%、阴性预测值为 33%、准确性为 92%。
64 层 MDCT 高度准确地诊断小肠梗阻的转折点，准确率为 92%。它可以在手术前作为小肠梗阻的定位工具。
