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4 不同乳腺X线摄影设备在DBT曝光模式下断层第一张投影图和0°投影图SNR的CoV值统计结果图示

Fig. 4 The statistical results of the CoV values of SNR for the first projection image and 0°projection image of three mammography devices in DBT exposure mode A, B, C, and D represented the distributions and statistical results of CoV values of SNR for the first projection images and 0° projection images of DBT for device 1 at small angle, device 1 at large angle, device 2, and device 3, respectively.