Joël Greffier, Anaïs Viry, Antoine Robert, Mouad Khorsi, Salim Si-Mohamed
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引用次数: 0
Abstract
In recent years, computed tomography (CT) has undergone a number of developments to improve radiological care. The most recent major innovation has been the development of photon-counting detectors. By comparison with the energy-integrating detectors traditionally used in CT, these detectors offer better dose efficiency, eliminate electronic noise, improve spatial resolution and have intrinsic spectral sensitivity. These detectors also allow the energy of each photon to be counted, thus improving the sampling of the X-ray spectrum in multiple energy bins, to better distinguish between photoelectric and Compton attenuation coefficients, resulting in better spectral images and specific color K-edge images. The purpose of this article was to make the reader more familiar with the basic principles and techniques of new photon-counting CT systems equipped with photon-counting detectors and also to describe the currently available devices that could be used in clinical practice.
近年来，计算机断层扫描（CT）经历了一系列发展，以改善放射治疗。最近的重大创新是光子计数探测器的开发。与 CT 传统使用的能量积分探测器相比，这些探测器具有更好的剂量效率，消除了电子噪声，提高了空间分辨率，并具有内在的光谱灵敏度。这些探测器还可以对每个光子的能量进行计数，从而改进了多个能量分区的 X 射线光谱采样，更好地区分光电衰减系数和康普顿衰减系数，从而获得更好的光谱图像和特定颜色的 K 边图像。本文旨在让读者更加熟悉配备光子计数探测器的新型光子计数 CT 系统的基本原理和技术，同时介绍目前可用于临床实践的设备。
期刊介绍：
Diagnostic and Interventional Imaging accepts publications originating from any part of the world based only on their scientific merit. The Journal focuses on illustrated articles with great iconographic topics and aims at aiding sharpening clinical decision-making skills as well as following high research topics. All articles are published in English.
Diagnostic and Interventional Imaging publishes editorials, technical notes, letters, original and review articles on abdominal, breast, cancer, cardiac, emergency, forensic medicine, head and neck, musculoskeletal, gastrointestinal, genitourinary, interventional, obstetric, pediatric, thoracic and vascular imaging, neuroradiology, nuclear medicine, as well as contrast material, computer developments, health policies and practice, and medical physics relevant to imaging.
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