16排螺旋CT诊断胃癌淋巴结转移的可行性

目的:探讨16排螺旋CT诊断胃癌淋巴结转移的可行性与价值。方法:选取2011年7月至2014年7月在我院进行诊治的胃癌患者78例，16排螺旋CT进行诊断，并进行常规CT扫描与增强CT灌注扫描。结果:78例患者中有淋巴结转移60例，无淋巴结转移18例，淋巴结转移发生率为76.9%。无转移淋巴结组的肿瘤直径为（0.54±0.11）cm，而有淋巴结转移组的肿瘤直径为（0.87±0.12）cm，对比差异有统计学意义(P＜0.05)。所有患者都顺利完成CT扫描，图像无伪影，靶平面保持良好。有淋巴结转移组的PS与BV值都明显高于无淋巴结转移组(P＜0.05)。经过CT判定为淋巴结转移61例，无淋巴结转移17例，与手术病理判定对比，螺旋CT诊断胃癌淋巴结转移的敏感性与特异性分别为100.0%和94.4%。结论:16排螺旋CT诊断胃癌淋巴结转移能获得更好的肿瘤血液动力学信息，具有很好的诊断敏感性与特异性，对胃癌制定合理治疗方案及判断预后有重要的临床意义。

The feasibility of 16 -slice spiral CT in the diagnosis of lymph node metastasis of gastric cancer

Objective:To investigate the feasibility and value of 8 layers 16-slice spiral CT in the diagnosis of lymph node metastasis of gastric cancer.Methods:From July 2011 to July 2014,78 patients with gastric cancer were selected used the 8-layer 16-slice spiral CT for diagnosis and examined by routine CT scan and enhanced CT perfusion scan.Results:In 78 patients,60 patients were with lymph node metastasis,18 patients without lymph node metastasis.The lymph node metastasis rate was 76.9%.In no lymph node metastasis group,tumor diameter was(0.54±0.11)cm,and lymph node metastasis tumor diameter was(0.87±0.12)cm(P＜0.05).All patients were successfully completed CT scan images without artifacts,maintaining good target plane.PS and BV values in the lymph node metastasis were significantly higher than those without lymph node metastasis(P＜0.05),but in two groups BV and MTT values compared had no difference.After CT for lymph node metastasis in 61 patients were judged,17 patients were without lymph node metastasis,and surgical pathology judged by comparing spiral CT diagnosis of lymph node metastasis of gastric sensitivity and specificity were 100.0% and 94.4%.Conclusion:8 layers 16-slice spiral CT diagnosis of lymph node metastasis of gastric cancer can get better hemodynamic information,with good diagnostic sensitivity and specificity of gastric cancer.