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目的探讨CT三维重建技术对胃癌术后复发的诊断意义。方法对哈尔滨医科大学附属第三医院2004年12月至2008年12月期间经手术或临床证实的39例胃癌根治术后复发的患者行多层螺旋CT扫描,在工作站进行三维重建,用CT轴位图像和三维后处理图像分别对胃癌术后复发患者进行诊断。结果 CT轴位图像和三维后处理图像对病变形态、侵犯范围、淋巴结转移及远处转移情况的检出率分别为82.1%(23/28)和100%(28/28),62.5%(10/16)和93.8%(15/16),66.7%(10/15)和93.3%(14/15),87.5%(7/8)和87.5%(7/8)。结论 CT三维重建对于增厚胃壁垂直厚度的测量、周围组织的浸润情况的观察及对淋巴结整体形态的变化可更直观、立体地进行诊断,对于胃癌术后复发的诊断优于单纯轴位图像,为复发肿瘤进一步治疗提供资料。
Objective To investigate the diagnostic value of CT three-dimensional reconstruction in postoperative recurrence of gastric cancer. Methods Thirty-nine patients with postoperative recurrence of gastric cancer who had undergone surgery or clinically confirmed by operation or clinic from December 2004 to December 2008 in Harbin Medical University were examined by multi-slice spiral CT. Three-dimensional reconstruction was performed on the workstation. Bit images and three-dimensional post-processing images of patients with postoperative recurrence of gastric cancer diagnosis. Results The detection rates of CT axial images and three-dimensional post-processing images were 82.1% (23/28), 100% (28/28) and 62.5% (10%) respectively for lesion morphology, extent of invasion, lymph node metastasis and distant metastasis / 16) and 93.8% (15/16), 66.7% (10/15) and 93.3% (14/15), 87.5% (7/8) and 87.5% (7/8), respectively. Conclusion CT three-dimensional reconstruction of the thickness of the gastric wall to increase the thickness of the measurement of the surrounding tissue infiltration and lymph node morphology observed changes in the overall morphology can be more intuitive and three-dimensional diagnosis of postoperative recurrence of gastric cancer diagnosis is better than simple axial images, Information for further treatment of recurrent tumors.