宝石CT能谱成像对胃间质瘤的诊断价值

发布时间：2018-06-12 19:18

本文选题：胃肿瘤 + 间皮瘤　；参考：《中国医学影像学杂志》2015年04期

【摘要】：目的分析胃间质瘤(GST)的宝石CT能谱表现,探讨宝石CT能谱对其诊断与鉴别诊断的应用价值。资料与方法回顾性分析30例经手术病理证实并行宝石CT能谱成像扫描的GST患者的影像资料及相关临床资料,并通过测定病灶动脉期、静脉期的碘含量进行定量分析。结果 GST的CT能谱表现为软组织肿块,病灶大小不一,向胃腔内或外或同时向腔内外突出,其中低危组肿瘤直径1~5 cm 4例;中危组肿瘤直径1~5 cm 3例,6~19 cm 3例;高危组肿瘤直径6~9 cm 18例,1~5 cm 2例,1例患者为大小不等的多发病灶。肿瘤发生在胃体部15例,胃窦部10例,胃底部4例,多灶性多部位生长1例。肿瘤腔内外生长16例,其中高危患者14例;腔外生长10例,其中高危患者6例,低危患者1例;腔内生长4例,其中低危患者3例。动脉期病灶轻度强化,静脉期病灶强化程度增加,病灶与正常胃壁动脉期及静脉期的碘含量及标准碘含量差异有统计学意义(F=378.6、296.6,P0.05)。病灶动脉期及静脉期能谱曲线斜率差异有统计学意义(t=-2.245,P0.05)。结论宝石CT能谱成像可以准确显示GST病灶的外部形态、内部改变,通过测定碘含量可提供肿瘤定量诊断信息,能够为临床提供更多有效的信息和依据。
[Abstract]:Objective to investigate the value of gemstone CT spectrum in the diagnosis and differential diagnosis of gastric stromal tumor (GST). Materials and methods the imaging data and related clinical data of 30 patients with GST proved by surgery and pathology were analyzed retrospectively. The iodine content in arterial and venous phases of GST was quantitatively analyzed. Results the CT energy spectrum of GST showed soft tissue masses with different size, which protruded into and out of gastric cavity, including 4 cases in low risk group with tumor diameter of 1 5 cm, 3 cases in middle risk group in 3 cases with tumor diameter of 1 0 5 cm, 3 cases in middle risk group in 3 cases, and 3 cases in middle risk group. In the high risk group, the diameter of tumor was 69 cm, 18 cases were 1 5 cm and 1 case was multiple lesions of varying size. The tumor occurred in 15 cases of gastric body, 10 cases of antrum, 4 cases of gastric fundus, and 1 case of multifocal multi-site growth. There were 16 cases of tumor growth, including 14 cases of high risk, 10 cases of extraluminal growth, 6 cases of high risk, 1 case of low risk, 4 cases of intracavitary growth, 3 cases of low risk. There were significant differences in iodine content and standard iodine content between the lesions in arterial phase and normal gastric artery phase and venous phase (P 0.05). There were significant differences in the slope of the energy spectrum curve between the arterial and venous phases of the lesion. Conclusion gemstone CT energy dispersive imaging can accurately display the external morphology and internal changes of GST lesions. The quantitative diagnosis information can be provided by measuring iodine content, which can provide more effective information and basis for clinical diagnosis.
【作者单位】：山西医科大学附属肿瘤医院;
【分类号】：R735.2;R730.44

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