This work aims to characterize the novel DRX Plus 3543C detector in terms of detective quantum efficiency (DQE) using both a mobile x-ray system called Carestream DRX Revolution Nano and a traditional x-ray system (Carestream DRX Evolution). We used the commercial system DRX Revolution Nano, equipped with a new x-ray source based on CNT technology and field emission (FE) as the electron emitter (cathode). An innovative aspect of this device is its intrinsic selection of the focal spot size. We tested the system using three IEC-specified beam qualities (RQA3, 5 and 7) in terms of modulation transfer function (MTF), normalized noise power spectra (NNPS) and DQE as defined in the IEC 62220-1-1:2015. We compared the results obtained using DRX Revolution Nano and DRX Evolution with correlation and with Bland–Altman plots to study their agreement. RQA3 MTF is slightly lower than the RQA5 and 7 curves between 0.5 and 2.5 cycles mm −1 . We measured MTF values of about 0.6 at 1 ...

中文翻译：

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使用碳纳米管（CNT）移动X射线系统和传统X射线系统的新型无线DRX Plus 3543C的物理特性

这项工作旨在通过使用称为Carestream DRX Revolution Nano的移动X射线系统和传统X射线系统（Carestream DRX Evolution）的检测量子效率（DQE）来表征新型DRX Plus 3543C检测器。我们使用了商业系统DRX Revolution Nano，该系统配备了基于CNT技术的新X射线源和场发射（FE）作为电子发射器（阴极）。该设备的创新之处在于其固有的焦点尺寸选择。我们根据IEC 62220-1-1：2015中定义的调制传递函数（MTF），归一化噪声功率谱（NNPS）和DQE，使用IEC指定的三种光束质量（RQA3、5和7）对系统进行了测试。我们比较了使用DRX Revolution Nano和DRX Evolution及其相关性和Bland-Altman图获得的结果，以研究它们的一致性。RQA3 MTF在0.5和2.5个周期mm -1之间略低于RQA5和7曲线。我们在1 ...处测得的MTF值约为0.6 ...