This study was designed to evaluate the effect of the radiological technologists’ training on optimising the eye lens dose in brain computed tomography (CT) examinations. The lens dose of 50 adult patients was measured using thermoluminescent dosimeters before and after technologists’ training. Dose values of lenses, dose length product (DLP), volumetric CT dose index (CTDI_vol) as well as image quality in terms of quantitative (contrast to noise ratio and signal to noise ratio) and subjective (artefact) parameters were compared before and after training. Lens dose values were 31.57 ± 9.84 mGy and 5.36 ± 1.53 mGy before and after training, respectively, which was reduced by ~83% (p < 0.05). The values of DLP, CTDI_vol and image quality parameters were not significantly different (p > 0.05) and all images were diagnostically acceptable. Excluding the orbits from the scanning range is an efficient approach to optimize the lens dose; the training of the technologists has also a pivotal role in dose reducing.

中文翻译：

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在脑部CT扫描中通过门架倾斜进行镜片剂量优化：放射技术人员的训练的潜在作用。

这项研究旨在评估放射技术人员的培训对脑CT（CT）检查中优化眼镜片剂量的影响。在技​​术人员培训之前和之后，使用热致发光剂量计测量了50名成人患者的晶状体剂量。镜头的剂量值，剂量长度乘积（DLP），体积CT剂量指数（CTDI _vol）以及图像质量在定量（对比噪声比和信噪比）和主观（人工）参数方面进行了比较训练结束后。训练前后的镜片剂量分别为31.57±9.84 mGy和5.36±1.53 mGy，降低了约83％（p  <0.05）。DLP，CTDI _vol的值并且图像质量参数没有显着差异（p  > 0.05），并且所有图像在诊断上都可以接受。从扫描范围排除轨道是优化晶状体剂量的有效方法。技术人员的培训在减少剂量方面也起着关键作用。