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[目的]评价PET在原发性胃癌诊断和术前分期中的价值。[方法]对36例健康体检者和24例胃部疾病患者(11例胃癌、5例胃溃疡、8例胃炎)的PET检查进行回顾性分析。[结果]有14%的健康胃、53.8%的良性胃部病灶(胃溃疡、胃炎)SUVmax≥2.5。若以SUV≥2.5为界域,PET显像诊断胃癌的真阳性率为58.8%,真阴性率为85.7%,准确率为66.7%。有6例胃癌患者发现转移灶。[结论]PET显像对于原发性胃癌的诊断价值有限,但对于胃癌的术前分期和确定治疗方案具有重要价值。
[Objective] To evaluate the value of PET in the diagnosis and preoperative staging of primary gastric cancer. [Methods] The PET examination of 36 healthy subjects and 24 patients with gastric diseases (11 gastric cancer, 5 gastric ulcer and 8 gastritis) were retrospectively analyzed. [Result] SUVmax≥2.5 in 14% of healthy stomach and 53.8% of benign stomach lesion (gastric ulcer and gastritis). If SUV≥2.5, the true positive rate of PET imaging diagnosis of gastric cancer was 58.8%, the true negative rate was 85.7% and the accuracy rate was 66.7%. Six cases of gastric cancer found metastases. [Conclusion] The diagnostic value of PET imaging for primary gastric cancer is limited, but it is of great value for the preoperative staging of gastric cancer and the determination of the treatment plan.