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CT灌注成像中表面通透性及血容量和血流量在评价C6胶质瘤血管生成中的作用
The CT difference of permeability surface,cerebral blood volume and cerebral blood flow in the evaluation of angiogenesis and growth behavior of the C6 glioma
【摘要】 目的探讨 CT 灌注成像中表面通透性(PS)、血容量(CBV)、血流量(CBF)在评价肿瘤新生血管的功能和肿瘤生长行为方面的差别。方法成年 Wistar 大鼠60只,雌雄各半。将大鼠按体重进行编号,然后按数字表法将大鼠随机分为3组,每组20只(头部尾状核区接种 C6胶质瘤),分别于接种后第5、13、20天3个时间点依次进行 CT 灌注检查并获得 PS、CBV 和 CBF 图。采用方差分析及 SNK 检验比较不同部位(肿瘤中心、肿瘤周边、交界区、对侧脑组织)、不同时间点的 PS、CBV 和CBF 的变化。结果肿瘤中心区,接种后第5、13、20天3组间 CBF[分别为(280.33±8.82)、(388.33±14.00)、(116.16±11.54)ml·100 g-1·min-1],CBV[分别为(7.75±0.27)、(12.73±0.98)、(5.14±0.66)ml·100 g-1],PS[分别为(3.94±0.15)、(8.47±0.34)、(5.20±0.65)ml·100 g-1·min-1]差异均有统计学意义(分别 F=4.421,P=0.013;F=11.370,P=0.000;F=15.789,P=0.000)。5、13、20 d 组间肿瘤周边区 PS 分别为(5.80±0.49)、(8.40±3.04)、(15.52±0.71)ml·100 g-1·min-1,肿瘤交界区 PS 分别为(0.42±0.14)、(5.48±0.21)、(10.24±0.61)ml·100 g-1·min-1,差异均有统计学意义(F=13.567,P=0.000;F=12.470,P=0.000)。肿瘤周边区各组间 CBF、CBV 差异无统计学意义(F=1.176,P=0.336;F=0.148,P=0.710),肿瘤交界区各组间 CBF 分别为(175.33±12.95)、(275.50±13.76)、(246.33±12.81)ml·100 g1·min-1,CBV 分别为(4.15±0.47)、(8.05±0.30)、(7.54±0.89)ml·100 g-1,差异均有统计学意义(F=24.176,P=0.000;F=17.148,P=0.000;F=15.791,P=0.000)。结论 CBV、CBF 反映的是肿瘤血管的数量,PS 直接反映肿瘤新生血管的功能状态,评价肿瘤的生长行为。
【Abstract】 Objective To estimate the difference of PS、CBV/CBF in the evaluation pf angiogenesis and growth behavior of the C6 glioma.Methods Sixty adult Wistar rats were divided into 3 groups randomly.CT perfusion were performed at the time of 5,13,20 d after the rats were inoculated C6 glioma cells.Permeability surface(PS),cerebral blood volume(CBV),cerebral blood flow(CBF)of different part of the tumor(central part,peripheral part,adjacent part and contralateral normal parenchyma)were measured at different time.Results At the central parts of the lesions,there were obvious difference between different time of tumor growth among PS[(3.94±0.15),(8.47±0.34),(5.20±0.65)ml· 100g-1·min-1],CBF[(280.33±8.82),(388.33±14.00),(116.16±11.54)ml· 100g-1·min-1],CBV[(7.75±0.27),(12.73±0.98),(5.14±0.66)ml·100g-1](F=4.421,P= 0.013;F=11.370,P=0.000;F=15.789,P=0.000).There were statistical difference of PS at the different time in both the peripheral and adjacent parts of the glioma.(F=13.567,P=0.000;F=12.470, P=0.000).No difference were detected in CBF or CBV at different time of the peripheral parts of the tumors(F=1.176,P=0.336;F=0.148,P=0.710).there were significant difference between different time of tumor growth among CBF[(175.33±12.95),(275.50±13.76),(246.33±12.81)ml· 100g-1·min-1],CBV[(4.15±0.47),(8.05±0.30),(7.54±0.89)ml·100g-1]at the adjacent parts of the tumors(F=24.176,P=0.000;F=17.148,P=0.000;F=15.791,P=0.000). Coneluslon CBV,CBF can reflect the number and volume of the tumor vessels,while PS can directly reflect the function of the angiogenesis and the behavior of the glioma.
【Key words】 Tomography,X-ray computed; Perfusion; Capillaries; Animal experimental; Glioma;
- 【文献出处】 中华放射学杂志 ,Chinese Journal of Radiology , 编辑部邮箱 ,2007年05期
- 【分类号】R739.4
- 【被引频次】3
- 【下载频次】13