低剂量CT技术发展及其临床应用

发布时间：2018-07-10 01:54

本文选题：计算机断层扫描技术 + 低剂量　；参考：《中国医学物理学杂志》2016年03期

【摘要】：CT成像技术在临床上具有不可替代的应用价值,但由于CT扫描对患者的辐射剂量较高,因此如何在保证CT图像质量的前提下,降低对患者的辐射剂量是近年来医学影像界关注的重点,也是CT成像技术发展的一个重要方向。近年来依赖于科学技术的迅猛发展,低剂量CT技术也是日新月异,其在临床上的应用也越来越广泛。本文首先概括了传统CT检查存在的普遍问题,随后概述低剂量CT技术的发展情况,再以西门子CT为例,引入解决这些问题的低剂量CT技术,并将西门子低剂量CT技术分成3类:曝光控制技术、双源技术、图像重建技术。分别阐述它们的工作原理,最后从5个方面(胸部、颅面部、心脏冠脉、腹部和头颅)对其在临床上的应用进行了讨论。
[Abstract]:Ct imaging technology has irreplaceable application value in clinic, but because of the high radiation dose of CT scan, how to ensure the quality of CT image, Reducing the radiation dose to patients is the focus of medical imaging field in recent years, and it is also an important direction of CT imaging technology development. In recent years, with the rapid development of science and technology, low-dose CT technology is also changing with each passing day, and its clinical application is more and more extensive. In this paper, the general problems of traditional CT examination are summarized, and then the development of low-dose CT technology is summarized. Then, taking Siemens CT as an example, a low-dose CT technique is introduced to solve these problems. Siemens low dose CT technology is divided into three categories: exposure control technology, dual source technology and image reconstruction technology. Their working principles are described, and their clinical application is discussed from five aspects (chest, craniofacial, coronary artery, abdomen and skull).
【作者单位】：上海理工大学医学影像工程研究所;上海西门子医疗器械有限公司;
【基金】：国家自然科学基金(60972122) 上海市教委科研创新重点项目(14ZZ135)
【分类号】：R814.2

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