PDF(Pubmed)
Abstract：
Dynamic digital radiography (DDR) is a high-resolution radiographic imaging technique using pulsed X-ray emission to acquire a multiframe cine-loop of the target anatomical area. The first DDR technology was orthostatic chest acquisitions, but new portable equipment that can be positioned at the patient\'s bedside was recently released, significantly expanding its potential applications, particularly in chest examination. It provides anatomical and functional information on the motion of different anatomical structures, such as the lungs, pleura, rib cage, and trachea. Native images can be further analyzed with dedicated post-processing software to extract quantitative parameters, including diaphragm motility, automatically projected lung area and area changing rate, a colorimetric map of the signal value change related to respiration and motility, and lung perfusion. The dynamic diagnostic information along with the significant advantages of this technique in terms of portability, versatility, and cost-effectiveness represents a potential game changer for radiological diagnosis and monitoring at the patient\'s bedside. DDR has several applications in daily clinical practice, and in this narrative review, we will focus on chest imaging, which is the main application explored to date in the literature. However, studies are still needed to understand deeply the clinical impact of this method.
摘要：
动态数字射线照相（DDR）是一种高分辨率的射线照相成像技术，使用脉冲X射线发射来采集目标解剖区域的多帧电影循环。第一个DDR技术是立位胸部采集，但是最近发布了可以放置在患者床边的新便携式设备，显着扩大其潜在的应用，尤其是胸部检查。它提供有关不同解剖结构运动的解剖和功能信息，比如肺，胸膜,胸腔,还有气管.可以使用专用的后处理软件进一步分析原生图像，以提取定量参数，包括膈肌运动,自动投影的肺面积和面积变化率，与呼吸和运动相关的信号值变化的比色图，和肺灌注。动态诊断信息以及该技术在可移植性方面的显着优势，多功能性，和成本效益代表了一个潜在的游戏规则改变者的放射诊断和监测在病人的床边。DDR在日常临床实践中有多种应用，在这篇叙述性评论中，我们将专注于胸部成像，这是迄今为止文献中探讨的主要应用。然而,仍需要研究深入了解这种方法的临床影响。
