双源CT双能成像对不同胃癌病理分型的诊断价值

发布时间：2018-01-17 14:12

本文关键词：双源CT双能成像对不同胃癌病理分型的诊断价值　出处：《现代医用影像学》2016年03期 　论文类型：期刊论文

【摘要】：目的:探讨双源CT能量成像技术在不同胃癌病理分型诊断中的应用价值。材料与方法:回顾性分析经临床或病理证实的22例胃癌术前双能量扫描模式CT资料,应用能谱分析软件,测定并分析(40ke V-190ke V)的正常胃壁组织及不同胃癌病理分型组织的能谱曲线图。测量不同能量水平的CT值,计算出不同胃癌组织的平均CT值,并绘制相关的能谱曲线,计算其斜率并评估其衰减趋势。结果:不同的胃癌病理类型在不同ke V值下的衰减程度不同,曲线均为下降型,斜率均为负值。胃非黏液癌组的曲线斜率绝对值明显高于胃黏液癌组,其中动脉期时的斜率差异无统计学意义,但静脉期及实质期两组的斜率差异较明显,均有统计学意义。印戒细胞癌组的能谱衰减曲线高度普遍高于黏液腺癌组,静脉期及实质期两组的斜率差异有统计学意义,动脉期时两者间的斜率差异较小,无统计学意义。低分化腺癌组的能谱衰减曲线高度普遍稍高于中高分化腺癌组,静脉期及实质期两组的斜率差异具统计学意义,动脉期时的斜率差异较小,无统计学意义。结论:双源CT的双能扫描模式利用双能量能谱曲线,可有助于鉴别不同病理类型的胃癌。
[Abstract]:Objective: to evaluate the value of dual-source CT energy imaging in the diagnosis of gastric cancer. The CT findings of 22 cases of gastric cancer proved clinically or pathologically by dual energy scan mode were retrospectively analyzed. The normal gastric wall tissues of 40ke V-190ke V) and the pathological types of gastric cancer were measured and analyzed by using the energy spectrum analysis software. The CT values of different energy levels were measured. The average CT values of different gastric cancer tissues were calculated and the relevant energy spectrum curves were drawn. The slope was calculated and the attenuation trend was evaluated. Results: the attenuation degree of different gastric cancer pathological types was different under different ke V values. The absolute value of curve slope in gastric non-mucinous carcinoma group was significantly higher than that in gastric mucinous carcinoma group, and there was no significant difference in slope at arterial stage. However, the slope of venous phase and parenchymal phase was significantly different between the two groups. The attenuation curve of energy spectrum in signet ring cell carcinoma group was higher than that in mucinous adenocarcinoma group. There was significant difference in slope between the two groups in venous phase and parenchymal phase, but the slope difference was small in arterial phase. There was no statistical significance. The height of energy spectrum attenuation curve in poorly differentiated adenocarcinoma group was slightly higher than that in middle and high differentiated adenocarcinoma group. The slope of venous phase and parenchymal phase was statistically significant, and the slope difference was small in arterial phase. Conclusion: the dual-energy scanning mode of dual-source CT can be used to differentiate gastric cancer from different pathological types by using dual-energy energy spectrum curve.
【作者单位】：东南大学医学院;东南大学附属中大医院医学影像科;
【分类号】：R735.2;R730.44
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