Tortora Mario, Gemini Laura, D'Iglio Imma, Ugga Lorenzo, Spadarella Gaia, Cuocolo Renato
Department of Advanced Biomedical Sciences, University of Naples "Federico II", Via Sergio Pansini 5, 80131 Naples, Italy.
Department of Clinical Medicine and Surgery, University of Naples "Federico II", Via Sergio Pansini 5, 80131 Naples, Italy.
J Imaging. 2022 Apr 15;8(4):112. doi: 10.3390/jimaging8040112.
Photon-counting computed tomography (CT) is a technology that has attracted increasing interest in recent years since, thanks to new-generation detectors, it holds the promise to radically change the clinical use of CT imaging. Photon-counting detectors overcome the major limitations of conventional CT detectors by providing very high spatial resolution without electronic noise, providing a higher contrast-to-noise ratio, and optimizing spectral images. Additionally, photon-counting CT can lead to reduced radiation exposure, reconstruction of higher spatial resolution images, reduction of image artifacts, optimization of the use of contrast agents, and create new opportunities for quantitative imaging. The aim of this review is to briefly explain the technical principles of photon-counting CT and, more extensively, the potential clinical applications of this technology.
光子计数计算机断层扫描（CT）是一项近年来越来越受关注的技术，因为借助新一代探测器，它有望从根本上改变CT成像的临床应用。光子计数探测器克服了传统CT探测器的主要局限性，能够提供无电子噪声的超高空间分辨率，具有更高的对比度噪声比，并能优化光谱图像。此外，光子计数CT可以减少辐射剂量，重建更高空间分辨率的图像，减少图像伪影，优化造影剂的使用，并为定量成像创造新机会。本综述的目的是简要解释光子计数CT的技术原理，并更广泛地阐述该技术潜在的临床应用。
