Neuroimaging Applications of Photon-counting CT.

IF 1 4区 医学 Q4 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Siddhant Dogra, Ajay Madhavan, Gul Moonis
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引用次数: 0

Abstract

Photon-counting computed tomography (PCCT) is a new imaging technology that has advanced diagnostic imaging by offering improved spatial and contrast resolution as well as novel spectral imaging capabilities. Unlike conventional CT, which uses energy-integrating detectors, PCCT employs photon-counting detectors that directly measure individual photon energies, enabling applications such as virtual monochromatic imaging (VMI) and material decomposition. These innovations allow for artifact reduction, better visualization of fine anatomic structures, and improved diagnostic accuracy, all while reducing radiation dose. This review explores select applications of PCCT in neuroimaging, focusing on the brain, temporal bone, and spine. In the brain, we discuss how PCCT demonstrates superior performance for evaluating aneurysms, metallic prostheses, and vessel stenosis, offering enhanced visualization of vascular structures and minimizing artifacts. For temporal bone imaging, we review assessment of both complex anatomy and potentially subtle pathologies such as otosclerosis, as well as visualization of implants like cochlear devices and their intricate components. In spinal imaging, we explore how PCCT improves precise detection of causes of cerebrospinal fluid leaks, improves localization of tiny vessels such as the artery of Adamkiewicz and spinal dural arteriovenous fistulas, and reduces metal artifacts associated with postoperative hardware. PCCT addresses limitations of conventional CT while unlocking new diagnostic possibilities across neuroimaging applications. As clinical adoption of PCCT grows, ongoing research and development will refine imaging protocols and expand its utility. The accumulating evidence underscores PCCT's transformative potential to improve diagnostic confidence in neuroimaging and beyond.

光子计数CT在神经影像学中的应用。
光子计数计算机断层扫描(PCCT)是一种新的成像技术,通过提供改进的空间和对比度分辨率以及新的光谱成像能力,具有先进的诊断成像。与传统CT使用能量积分探测器不同,PCCT使用光子计数探测器直接测量单个光子能量,从而实现虚拟单色成像(VMI)和材料分解等应用。这些创新允许减少伪影,更好地可视化精细解剖结构,提高诊断准确性,同时减少辐射剂量。这篇综述探讨了PCCT在神经影像学中的应用,重点是脑、颞骨和脊柱。在脑部,我们讨论了PCCT如何在评估动脉瘤、金属假体和血管狭窄方面表现出卓越的性能,提供了增强的血管结构可视化和最小化伪影。对于颞骨成像,我们回顾了复杂解剖和潜在微妙病理(如耳硬化)的评估,以及耳蜗装置及其复杂部件等植入物的可视化。在脊柱成像方面,我们探讨了PCCT如何提高脑脊液泄漏原因的精确检测,改善微小血管(如Adamkiewicz动脉和脊髓硬膜动静脉瘘)的定位,并减少术后硬体相关的金属伪影。PCCT解决了传统CT的局限性,同时解锁了跨神经成像应用的新诊断可能性。随着PCCT临床应用的增长,正在进行的研究和开发将改进成像方案并扩大其效用。越来越多的证据强调了PCCT在提高神经影像学及其他领域诊断信心方面的变革潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
2.50
自引率
0.00%
发文量
230
审稿时长
4-8 weeks
期刊介绍: The mission of Journal of Computer Assisted Tomography is to showcase the latest clinical and research developments in CT, MR, and closely related diagnostic techniques. We encourage submission of both original research and review articles that have immediate or promissory clinical applications. Topics of special interest include: 1) functional MR and CT of the brain and body; 2) advanced/innovative MRI techniques (diffusion, perfusion, rapid scanning); and 3) advanced/innovative CT techniques (perfusion, multi-energy, dose-reduction, and processing).
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