Division of Functional and Diagnostic Imaging Research, Department of Radiology, Kobe University Graduate School of Medicine, Japan; Advanced Biomedical Imaging Research Center, Kobe University Graduate School of Medicine, Japan.
Department of Radiology, Osaka Police Hospital, Japan.
Eur J Radiol. 2019 Feb;111:93-103. doi: 10.1016/j.ejrad.2018.12.017. Epub 2018 Dec 20.
Computer tomography plays a major role in the evaluation of thoracic diseases, especially since the advent of the multidetector-row CT (MDCT) technology. However, the increase use of this technique has raised some concerns about the resulting radiation dose. In this review, we will present the various methods allowing limiting the radiation dose exposure resulting from chest CT acquisitions, including the options of image filtering and iterative reconstruction (IR) algorithms. The clinical applications of reduced dose protocols will be reviewed, especially for lung nodule detection and diagnosis of pulmonary thromboembolism. The performance of reduced dose protocols for infiltrative lung disease assessment will also be discussed. Lastly, the influence of using IR algorithms on computer-aided detection and volumetry of lung nodules, as well as on quantitative and functional assessment of chest diseases will be presented and discussed.
计算机断层扫描在胸部疾病的评估中起着重要作用，特别是自从多排螺旋 CT（MDCT）技术问世以来。然而，这种技术的广泛应用引起了人们对辐射剂量的关注。在这篇综述中，我们将介绍各种方法，这些方法可以限制胸部 CT 采集产生的辐射剂量，包括图像滤波和迭代重建（IR）算法的选择。我们将回顾降低剂量方案的临床应用，特别是在肺结节检测和肺血栓栓塞症诊断方面。我们还将讨论降低剂量方案在评估浸润性肺疾病方面的性能。最后，将介绍和讨论 IR 算法对肺结节的计算机辅助检测和体积测量以及对胸部疾病的定量和功能评估的影响。
