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Estimates of Patient Radiation Doses in Digital Radiography Using DICOM Information at a Large Teaching Hospital in Oman.
Journal of Digital Imaging ( IF 4.4 ) Pub Date : null , DOI: 10.1007/s10278-019-00199-y
Ibrahim I Suliman 1, 2, 3
Affiliation  

In this study, we sought to estimate the patient radiation doses in the digital radiography X-ray examinations conducted in a large hospital. The patient exposure factors and kerma-area product (PKA) were retrospectively recorded via the Digital Imaging and Communications in Medicine (DICOM) header for 547 patients. The entrance surface air kerma (ESAK) was estimated from the measurements of the X-ray tube output and recorded exposure factors, as well as from the console that displayed PKA as an alternative method. Effective doses were estimated from ESAK and PKA values using the appropriate conversion coefficient. In the chest PA, chest LAT, cervical spine AP, cervical spine LAT, abdomen AP, pelvis AP, lumbar spine AP, and lumbar spine LAT, the median ESAK (mGy) was found to be 0.13, 0.27, 0.35, 0.52, 0.70, 1.06, 2.33, and 4.18 mGy, respectively. Median PKA values were 0.10, 0.26, 0.14, 0.17, 0.77, 0.68, 0.81, and 1.11 Gy cm2, respectively. The estimated effective dose from ESAK and PKA values yielded comparable results. The comparison revealed that the ESAK and PKA values fell far below the reported in the literature. The results showed that the information of the DICOM deader is valuable for dosimetry and optimization.

中文翻译:

在阿曼一家大型教学医院中,使用DICOM信息估算数字X射线照相术中的患者放射剂量。

在这项研究中,我们试图在一家大型医院进行的数字X射线检查中估计患者的放射剂量。通过数字影像和医学通讯(DICOM)标头回顾性记录了547例患者的暴露因子和角膜面积积(PKA)。入口表面空气比释动能(ESAK)是根据X射线管输出功率和记录的曝光因子以及显示PKA作为替代方法的控制台估算的。使用适当的转换系数,根据ESAK和PKA值估算有效剂量。在胸部PA,胸部LAT,颈椎AP,颈椎LAT,腹部AP,骨盆AP,腰椎AP和腰椎LAT中,ESAK(mGy)的中位数为0.13、0.27、0.35、0.52、0.70 ,1.06、2.33和4.18 mGy。中位PKA值分别为0.10、0.26、0.14、0.17、0.77、0.68、0.81和1.11 Gy cm2。根据ESAK和PKA值估算的有效剂量得出了可比的结果。比较表明,ESAK和PKA值远低于文献报道的水平。结果表明,DICOM填充器的信息对于剂量测定和优化是有价值的。
更新日期:2020-03-20
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