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Estimation of Mean Glandular Dose for Patients Who Undergo Mammography and Studying the Factors Affecting it

机译:乳房X线照射患者平均腺体剂量的估计,研究影响它的因素

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The objective of this study was to determine mean glandular dose (MGD) during diagnostic mammography. This study was done in two hospitals in Hawler city in Kurdistan -region/Iraq, the exposure parameters kVp and mAs was recorded for 40 patients under go mammography. The MGD estimated by multiplied ESD with normalized glandular dose (Dn). The ESD measured indirectly by measuring output radiation mGy/mAs by using PalmRAD 907 as a suitable detector (Gigger detector).the results; shown that the mean and its standard deviation of MGD for Screen Film Mammography and Digital Mammography are (0.95±0.18)mGy and (0.99±0.26)mGy, respectively. And there is a significant difference between MGD for Screen Film Mammography and Digital Mammography views (p<0. 05). Also the mean value and its standard deviation of MGD for screen film mammography is (0.96±0.21) for CC projection and (1.03±0.3) mGy for MLO projection, but mean value and its standard deviation evaluated of MGD for digital mammography is (0.92±0.17) mGy for CC projection and (0.98±0.2) mGy for MLO projection. As well as, the effect of kVp and mAs in MGD were studied, shows that in general as kVp and mAs increased the MGD increased accordingly in both of mammography systems.
机译:本研究的目的是在诊断乳房X线摄影期间确定平均腺剂量(MGD)。这项研究在夏威夷州赫德斯坦 - 前后/伊拉克的两家医院完成了,曝光参数KVP和MAS被记录为40名乳房X线乳腺摄影。 MGD通过常规腺剂量(DN)的倍增ESD估计。通过使用Palmrad 907作为合适的探测器(Gigger Detector)来间接测量ESD。结果;结果;表明,MGD对筛膜乳房爆炸和数字乳房X线照相术的平均值及其标准偏差分别为(0.95±0.18)MGY和(0.99±0.26)MGY。屏幕膜乳房X线摄影和数字乳房视图的MGD之间存在显着差异(P <0.05)。 SCC投影的MGD的平均值及其标准偏差为CC投影(1.03±0.3)MGY,用于MLO投影的平均值及其标准偏差为数字乳房X线照相术(0.92)用于CC投影的±0.17)MGY和MLO投影的(0.98±0.2)MGY。除了研究MGD中KVP和MAS的效果,表明通常,KVP和MAS增加MGD在乳房摄影系统中相应增加。

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