Cademartiri Filippo, Meloni Antonella, Pistoia Laura, Degiorgi Giulia, Clemente Alberto, Gori Carmelo De, Positano Vincenzo, Celi Simona, Berti Sergio, Emdin Michele, Panetta Daniele, Menichetti Luca, Punzo Bruna, Cavaliere Carlo, Bossone Eduardo, Saba Luca, Cau Riccardo, Grutta Ludovico La, Maffei Erica
Department of Radiology, Fondazione Monasterio/CNR, 56124 Pisa, Italy.
Department of Bioengineering, Fondazione Monasterio/CNR, 56124 Pisa, Italy.
J Clin Med. 2023 May 23;12(11):3627. doi: 10.3390/jcm12113627.
The photon-counting detector (PCD) is a new computed tomography detector technology (photon-counting computed tomography, PCCT) that provides substantial benefits for cardiac and coronary artery imaging. Compared with conventional CT, PCCT has multi-energy capability, increased spatial resolution and soft tissue contrast with near-null electronic noise, reduced radiation exposure, and optimization of the use of contrast agents. This new technology promises to overcome several limitations of traditional cardiac and coronary CT angiography (CCT/CCTA) including reduction in blooming artifacts in heavy calcified coronary plaques or beam-hardening artifacts in patients with coronary stents, and a more precise assessment of the degree of stenosis and plaque characteristic thanks to its better spatial resolution. Another potential application of PCCT is the use of a double-contrast agent to characterize myocardial tissue. In this current overview of the existing PCCT literature, we describe the strengths, limitations, recent applications, and promising developments of employing PCCT technology in CCT.
光子计数探测器（PCD）是一种新型的计算机断层扫描探测器技术（光子计数计算机断层扫描，PCCT），它为心脏和冠状动脉成像带来了诸多显著优势。与传统CT相比，PCCT具有多能量能力、更高的空间分辨率以及软组织对比度，电子噪声几乎为零，辐射剂量降低，并且造影剂的使用得到优化。这项新技术有望克服传统心脏和冠状动脉CT血管造影（CCT/CCTA）的若干局限性，包括减少重度钙化冠状动脉斑块中的伪影或冠状动脉支架患者中的硬化伪影，以及由于其更好的空间分辨率而对狭窄程度和斑块特征进行更精确的评估。PCCT的另一个潜在应用是使用双造影剂来表征心肌组织。在对现有PCCT文献的当前综述中，我们描述了在CCT中采用PCCT技术的优势、局限性、近期应用和有前景的发展。
