| 崔磊,龚沈初,黄胜,何伯圣,何玉泉,何书.64层螺旋CT多平面重建定位机械性小肠梗阻移行带[J].中国医学影像技术,2011,27(4):776~779 |
| 64层螺旋CT多平面重建定位机械性小肠梗阻移行带 |
| Multiplanar reformation in location of the transition zone of mechanical small bowel obstruction with 64-slice CT |
| 投稿时间：2010-11-17 修订日期：2011-01-06 |
| DOI： |
| 中文关键词: 肠梗阻 移行带 多平面重建 体层摄影术,X线计算机 |
| 英文关键词:Intestinal obstruction Transition zone Multiplanar reformations Tomography, X-ray computed |
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| 中文摘要: |
| 目的 与CT轴位图像对比,评估64层螺旋CT MPR技术对机械性小肠梗阻(SBO)移行带的定位价值。方法 回顾性分析经手术证实的52例机械性SBO患者的CT图像。首先由2名高年资影像科医师阅片确立移行带,作为评估的标准。然后由另2名影像医师(医师A、B)分别独立阅读CT图像(首先阅读轴位图像,1个月后阅读MPR图像)确定梗阻移行带,并进行可靠性评分(1分:可靠性弱;2分:可靠性中等;3分:可靠性强),记录阅片评估时间。比较单独阅读轴位图像和MPR图像确定梗阻移行带的准确率、可靠性评分及阅片时间。结果 医师A单独阅读轴位图像和MPR图像确定梗阻移行带的准确率分别为82.69%和96.15%(χ2=7.00,P=0.0082),医师B分别为78.85%和86.54%(χ2=4.00,P=0.0445)。医师A阅读轴位图像和MPR图像的可靠性评分分别为2.46±0.67和2.65±0.69(t=3.48,P=0.001),医师B分别为2.40±0.72和2.71±0.57(t=4.76,P<0.001)。医师A阅读轴位图像和MPR图像的时间分别为(298±47)s和(304±42)s(t=0.70,P=0.49),医师B分别为(210±39)s和(224±52)s(t=1.46,P=0.15)。结论 较之CT轴位图像,MPR图像可提高机械性SBO移行带的定位准确率和可靠性,且阅片耗时无明显变化。 |
| 英文摘要: |
| Objective To assess the diagnostic value of MPR in comparison with axial images alone for location of the transition zone in CT of mechanical small-bowel obstruction (SBO). Methods CT images of 52 consecutive patients with mechanical SBO proved by surgery were retrospectively analyzed. Two associate senior doctors read CT images and determined the transition zone as the diagnostic standard. Then 2 attending doctors (A and B) independently located the transition zone using first axial slices alone and then using MPR images 1 month later according to a three-point confidence scale (score 1: low confidence; score 2: median confidence; score 3: high confidence), and the interpretation time were recorded. Diagnostic accuracy, mean confidence score and the interpretation time were evaluated for both the transverse and multiplanar data sets. Results The accuracy of transition zone location with axial and MPR images for doctor A was 82.69% and 96.15% (χ2=7.00, P=0.0082), and for doctor B was 78.85% and 86.54% (χ2=4.00, P=0.0445), respectively. The mean confidence score with axial and MPR images for doctor A was 2.46±0.67 and 2.65±0.69 (t=3.48,P=0.001), and for doctor B was 2.40±0.72 and 2.71±0.57 (t=4.76, P<0.001), respectively. Time of radiograph reading with axial and MPR images for doctor A was (298±47)s and (304±42)s (t=0.70, P=0.49), and for doctor B was (210±39)s and (224±52)s (t=1.46, P=0.15), respectively. Conclusion Compared to axial images, MPR technique can increase both accuracy and confidence in the location of the transition zone of SBO with CT, and interpretation time is not increased. |
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