Department of Radiology & Nuclear Medicine, Erasmus MC, Rotterdam, P.O. Box 2240, 3000 CA, The Netherlands.
Eur J Radiol. 2020 Oct;131:109261. doi: 10.1016/j.ejrad.2020.109261. Epub 2020 Aug 31.
Since the introduction of Computed Tomography (CT), technological improvements have been impressive. At the same time, the number of adjustable acquisition and reconstruction parameters has increased substantially. Overall, these developments led to improved image quality at a reduced radiation dose. However, many parameters are interrelated and part of automated algorithms. This makes it more complicated to adjust them individually and more difficult to comprehend their influence on CT protocol adjustments. Moreover, the user's influence in adapting protocol parameters is sometimes limited by the manufacturer's policy or the user's knowledge. As a consequence, optimization can be a challenge. A literature search in Embase, Medline, Cochrane, and Web of Science was performed. The literature was reviewed with the objective to collect information regarding technological developments in CT over the past five decades and the role of the associated acquisition and reconstruction parameters in the optimization process.
自从引入计算机断层扫描（CT）以来，技术进步令人瞩目。与此同时，可调节的采集和重建参数数量大幅增加。总的来说，这些发展在降低辐射剂量的同时提高了图像质量。然而，许多参数相互关联，并且是自动化算法的一部分。这使得单独调整它们变得更加复杂，并且更难以理解它们对 CT 协议调整的影响。此外，用户在调整协议参数方面的影响力有时受到制造商政策或用户知识的限制。因此，优化可能是一个挑战。在 Embase、Medline、Cochrane 和 Web of Science 中进行了文献检索。本文回顾了文献，旨在收集过去五十年 CT 技术发展以及相关采集和重建参数在优化过程中的作用的信息。
