基于模体的乳腺X线摄影质量控制中SNR变异系数的分析

沈茜刚, 柴青焕, 姜婷婷, 沈悦, 肖勤, 顾雅佳

Analysis of variation coefficient of SNR in phantom-based mammography quality control

SHEN Xigang, CHAI Qinghuan, JIANG Tingting, SHEN Yue, XIAO Qin, GU Yajia

图3 3台乳腺X线摄影设备、3种曝光模式下二维图像SNR的CoV值统计结果

Fig. 3 The statistical results of CoV values for the SNR of two dimensional images under three mammography devices and three exposure modes were illustrated in the figure A, B, and C represented the data distributions and statistical results of CoV values of SNR for three breast imaging devices under routine FFDM, low-dose mammography, and DBT exposure modes. ns: No significance; **: P=0.003, M1 compared with M3.