宝石CT能谱成像在胃癌诊断中的初步应用研究

目的:探讨宝石CT能谱成像(gemstone spectral imaging,GSI)检查在胃癌术前分期中的价值。方法:经胃镜诊断的84例胃癌病人,采用GSI检查,对病灶及淋巴结进行能谱成像分析;其结果与术后病理检查作对照。结果:总数为84例的胃癌病人中,37例为管状腺癌,32例为印戒细胞癌;两者的动脉期病灶碘基值比率分别为(0.2252±0.1321),(0.2609±0.1025);门静脉期病灶碘基值比率分别为(0.4713±0.1498),(0.5630±0.1757),门静脉期的差异具有统计学意义(P=0.02)。腺癌的转移淋巴结和非转移淋巴结碘基值比率在动脉期有统计学差异;印戒细胞癌的转移淋巴结和非转移淋巴结在动脉期和门静脉期均有统计学差异。结论:GSI检查可以反映胃癌的不同病理类型,有助于鉴别转移淋巴结,从而提高胃癌术前的分期准确率。

Study of gemstone spectral imaging in diagnosis of gastric cancer

Objective To investigate the role of gemstone spectral imaging(GSI) in preoperative gastric cancer staging.Methods GSI was performed in a total of 84 cases of gastric cancer diagnosed by preoperative biopsy.Data were analyzed by commercial software to calculate the ratio of iodine-based value.All these findings were prospectively analyzed and correlated with the clinicopathological findings.Results Thirty-seven in 84 cases of gastric cancer belonged to tubular adenocarcinoma,and 32 cases belonged to signet ...