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计算机断层扫描中的剂量降低与剂量管理——最新技术水平

Dose Reduction and Dose Management in Computed Tomography - State of the Art.

作者信息

Zinsser Dominik, Marcus Roy, Othman Ahmed E, Bamberg Fabian, Nikolaou Konstantin, Flohr Thomas, Notohamiprodjo Mike

机构信息

Department of Diagnostic and Interventional Radiology, University Hospital Tübingen, Germany.

CTE PA, Siemens Medical Solutions, Forchheim, Germany.

出版信息

Rofo. 2018 Jun;190(6):531-541. doi: 10.1055/s-0044-101261. Epub 2018 Mar 13.

DOI:10.1055/s-0044-101261
PMID:29534253
Abstract

BACKGROUND

For years, the number of performed CT examinations has been rising. At the same time, computed tomography became more dose efficient. The aim of this article is to give an overview about the state of the art in dose reduction in CT and to highlight currently available tools in dose management.

METHOD

By performing a literature research on Pubmed regarding dose reduction in CT, relevant articles were identified and analyzed.

RESULTS AND CONCLUSION

Technical innovations with individual adaptation of tube current and voltage as well as iterative image reconstruction enable a considerable dose reduction with preserved image quality. At the same time, dedicated software tools are able to handle huge amounts of data and allow to optimize existing examination protocols.

KEY POINTS

· CT examinations are increasingly performed and contribute considerably to non-natural radiation exposure.. · A correct indication is crucial for each CT examination.. · The examination protocol has to be tailored to the medical question and patient.. · Multiple technical innovations enable considerable dose reduction with constant image quality.. · Dose management with dedicated software tools gains importance..

CITATION FORMAT

· Zinsser D, Marcus R, Othman AE et al. Dose reduction and dose management in computed tomography - State of the art. Fortschr Röntgenstr 2018; 190: 531 - 541.

摘要

背景

多年来，CT检查的数量一直在增加。与此同时，计算机断层扫描的剂量效率更高。本文旨在概述CT剂量降低的现状，并突出当前可用的剂量管理工具。

方法

通过在PubMed上对CT剂量降低进行文献研究，识别并分析相关文章。

结果与结论

通过管电流和电压的个体化调整以及迭代图像重建等技术创新，在保持图像质量的同时可大幅降低剂量。同时，专用软件工具能够处理大量数据，并允许优化现有的检查方案。

关键点

·CT检查越来越多，对非自然辐射暴露有很大影响。·正确的检查指征对每次CT检查至关重要。·检查方案必须根据医学问题和患者进行定制。·多种技术创新可在保持图像质量不变的情况下大幅降低剂量。·使用专用软件工具进行剂量管理变得越来越重要。

引用格式

·Zinsser D, Marcus R, Othman AE等。计算机断层扫描中的剂量降低和剂量管理——现状。Fortschr Röntgenstr 2018; 190: 531 - 541。

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