MDCT靶扫描技术在胃癌诊断中应用初探

发布时间：2018-10-31 08:04

【摘要】：目的:探讨MDCT靶扫描技术对胃癌术前分期的应用价值，以AJCC/UICC第七版TNM分期手册为参照标准。 材料与方法:收集41例行胃癌多排螺旋常规两期扫描+动脉后期CT靶扫描、并取得手术病理结果的病例。由2名有经验的放射医师依据第七版AJCC/UICC肿瘤TNM分期标准评价并记录胃癌CT“T”分期、胃癌部位、胃癌区胃壁厚度、胃癌病理类型对CT“T”分期是否有影响。分析结果与病理对照，并运用统计学方法对比常规两期增强组及常规增强+动脉后期靶扫描组两组方法诊断胃癌的敏感性、特异性、准确性。 结果:靶扫描组评价胃癌敏感性、特异性、准确性均优于常规两期增强组。靶扫描组的T分期总准确率为85.3%、两期增强组58.5%。靶扫描组早期胃癌T1a的敏感率为60%、T1b的敏感率为75%。 结论:胃靶扫描技术对胃癌T分期的诊断与病理诊断的符合率高，其诊断定性的准确性及病变被检出的敏感性均优于传统两期增强扫描。
[Abstract]:Objective: to evaluate the value of MDCT target scanning in preoperative staging of gastric cancer, using the seventh edition of AJCC/UICC TNM staging manual as the reference standard. Materials and methods: 41 patients with gastric cancer underwent multislice spiral conventional two-phase arterial CT target scanning at the late stage of arterial scanning and obtained surgical and pathological results. According to the seventh edition AJCC/UICC tumor TNM staging criteria, two experienced radiologists evaluated and recorded the CT "T" staging of gastric cancer, the location of gastric cancer, the thickness of gastric wall, and the pathological type of gastric cancer. The results were compared with pathological findings. The sensitivity specificity and accuracy of the two methods in diagnosing gastric cancer were compared with those in the conventional two-phase enhancement group and the conventional contrast-enhanced arterial target scanning group. Results: the sensitivity, specificity and accuracy of target scan group in evaluating gastric cancer were better than that of conventional two-phase enhancement group. The total accuracy of T staging was 85.3 in the target scan group and 58.5 in the two phase enhancement group. The sensitivity rate of T 1a in target scan group was 60 and 75 in target scan group. Conclusion: the diagnostic accuracy and sensitivity of gastric target scan for T staging and pathological diagnosis of gastric cancer are higher than those of conventional two-phase enhanced scan.
【学位授予单位】：苏州大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：R816.5;R735.2

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