什么是锥形束CT，它是如何工作的？

What is cone-beam CT and how does it work?

作者信息

Scarfe William C, Farman Allan G

机构信息

Department of Surgical/Hospital Dentistry, University of Louisville School of Dentistry, 501 South Preston Street, Louisville, KY 40292, USA.

出版信息

Dent Clin North Am. 2008 Oct;52(4):707-30, v. doi: 10.1016/j.cden.2008.05.005.

DOI:10.1016/j.cden.2008.05.005

PMID:18805225

Abstract

This article on x-ray cone-beam CT (CBCT) acquisition provides an overview of the fundamental principles of operation of this technology and the influence of geometric and software parameters on image quality and patient radiation dose. Advantages of the CBCT system and a summary of the uses and limitations of the images produced are discussed. All current generations of CBCT systems provide useful diagnostic images. Future enhancements most likely will be directed toward reducing scan time; providing multimodal imaging; improving image fidelity, including soft tissue contrast; and incorporating task-specific protocols to minimize patient dose.

摘要

本文关于X射线锥束CT（CBCT）采集，概述了该技术的基本操作原理以及几何和软件参数对图像质量和患者辐射剂量的影响。讨论了CBCT系统的优势以及所生成图像的用途和局限性总结。所有当前一代的CBCT系统都能提供有用的诊断图像。未来的改进很可能将朝着减少扫描时间、提供多模态成像、提高图像逼真度（包括软组织对比度）以及纳入特定任务协议以尽量减少患者剂量的方向发展。