In order to establish national diagnostic reference levels for mammography examinations, entrance skin air kerma, entrance skin dose and average glandular doses (AGDs) were calculated for a total of 25 624 cranio-caudal (CC) and mediolateral oblique (MLO) projections of 6309 patients for 40–49 and 50–64 age groups. The average entrance skin air kerma and entrance skin dose values for both age groups were found to be higher in MLO projections compared with CC projections. The minimum and maximum values of AGDs were determined as 0.4 and 7.9 mGy for both projections. The maximum numbers of AGDs for CC and MLO projections were calculated in the range of 1.1–1.5 and 1.6–2.0 mGy, respectively. The third quartile values of AGDs were calculated for each compressed breast thickness between 20 and 99 mm. The first national diagnostic reference levels of the country were established for each 10-mm compressed breast thickness in mammography examinations.

中文翻译：

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土耳其乳腺摄影检查平均腺体剂量和国家诊断参考水平。

为了建立乳腺X射线摄影检查的国家诊断参考水平，计算了总共25624个颅尾（CC）和中外侧斜（MLO）投影，分别计算了入口皮肤空气比释动能，入口皮肤剂量和平均腺体剂量（AGD）（6309） 40-49岁和50-64岁年龄段的患者。发现两个年龄组的平均入口皮肤空气比释动能和入口皮肤剂量值在MLO预测中均高于CC预测。对于两个投影，AGD的最小值和最大值分别确定为0.4和7.9 mGy。CC和MLO投影的最大AGD数量分别在1.1-1.5和1.6-2.0 mGy范围内计算。对于20至99毫米之间的每个压缩乳房厚度，计算出AGD的第三四分位数。