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目的:探讨在相同葡萄糖利用率的情况下,病灶标准摄取值(SUV)与病灶体积之间的关系。方法:向标准Jaszczak模型大小不等的6个球形热区插件内注入初始活度均为192.4 kBq/mL的~(18)氟-脱氧葡萄糖(~(18)F-FDG),并连续采集PET 3D图像7次,采集时间依次3 min、6 min、12 min、30 min、1 h、2 h、8 h,然后依次测量每个热区SUV,最后经随机区组方差分析不同热区SUV之间的差别。结果:6个热区SUV最大值依次是22.7±0.0,43.1±0.3,54.0±0.2,76.2±0.1,82.6±0.4,85.6±0.3,SUV平均值依次是15.9±0.7,22.9±2.2,32.6±2.2,48.6±3.8,47.0±1.2,57.0±0.5,提示6个热区SUV存在统计学差异(F>467,P<0.01)。结论:病灶SUV与病灶体积呈正相关。
PURPOSE: To investigate the relationship between the standard uptake of lesions (SUV) and the volume of lesions at the same glucose utilization. Methods: 18 18 F-FDG with an initial activity of 192.4 kBq / mL were injected into six spherical hotspots with different sizes of standard Jaszczak model, and PET 3D images of 7 times, the acquisition time followed by 3 min, 6 min, 12 min, 30 min, 1 h, 2 h, 8 h, and then measure each SUV hot zone, and finally by random block variance analysis of different hot SUV The difference between. Results: The maximum values of SUV in six hot areas were 22.7 ± 0.0,43.1 ± 0.3,54.0 ± 0.2,76.2 ± 0.1,82.6 ± 0.4,85.6 ± 0.3 and SUV were 15.9 ± 0.7,22.9 ± 2.2,32.6 ± 2.2,48.6 ± 3.8,47.0 ± 1.2,57.0 ± 0.5, suggesting a statistically significant difference in SUVs among the six hot areas (F> 467, P <0.01). Conclusion: There is a positive correlation between SUV and lesion volume.