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目的探讨多层螺旋CT及三维成像技术完善胃癌的术前诊断和比较研究不同重建方法的优越性。方法36例患者行多层螺旋CT扫描,MP(Rmultiplanar reconstructions)、SSD(shaded surface display)、RT3D(real-time 3D)、CTVE(CT virtual endoscopy)、立体剖割重建。术后均有病理证实。采用SPSS10.0进行秩和检验。结果CT对胃癌的大体分型准确率为100%。各种重建技术对于不同病变的显示存在显著性差异。MPR:P>0.05,浸润型、菜花型、溃疡型三种类型无差异。SSD:P>0.05,三种类型的胃癌无差异。立体剖面:X2=13.750,P=0.001,浸润型效果差。RT3D:X2=26.837,P=0.000,浸润型效果差。VE:X2=18.669,P=0.000,浸润型效果差。结论多种螺旋CT重建技术在胃癌术前的应用可以弥补传统消化道检查方法的不足,值得临床推广应用。各种重建技术对于不同病变的显示存在显著性差异,应该采用多种重建技术,综合分析。
Objective To explore the preoperative diagnosis of gastric cancer by multi-slice spiral CT and three-dimensional imaging and to compare the advantages of different reconstruction methods. Methods Thirty-six patients underwent multi-slice spiral CT scan, MP (multiplanar reconstructions), SSD (real-time 3D), CT virtual endoscopy (CTVT). Pathologically confirmed after surgery. Using SPSS10.0 rank sum test. Results The general accuracy of CT classification of gastric cancer was 100%. Various reconstruction techniques for the display of different lesions there is a significant difference. MPR: P> 0.05, infiltration type, cauliflower type, ulcer type no difference. SSD: P> 0.05, no difference between the three types of gastric cancer. Stereo cross-section: X2 = 13.750, P = 0.001, poor infiltration effect. RT3D: X2 = 26.837, P = 0.000, poor infiltration effect. VE: X2 = 18.669, P = 0.000, poor infiltration effect. Conclusion The application of various helical CT reconstruction techniques in preoperative gastric cancer can make up for the deficiencies of the traditional method of digestive tract examination and is worthy of clinical application. Various reconstruction techniques for the display of different lesions there is a significant difference, should use a variety of reconstruction techniques, a comprehensive analysis.