PDF(Pubmed)
Abstract：
This study provides an objective comparison of cranial computed tomography (CT) imaging quality and radiation dose between photon counting detectors (PCCTs) and energy-integrated detectors (EIDs). We retrospectively analyzed 158 CT scans from 76 patients, employing both detector types on the same individuals to ensure a consistent comparison. Our analysis focused on the Computed Tomography Dose Index and the Dose-Length Product together with the contrast-to-noise ratio and the signal-to-noise ratio for brain gray and white matter. We utilized standardized imaging protocols and consistent patient positioning to minimize variables. PCCT showed a potential for higher image quality and lower radiation doses, as highlighted by this study, thus achieving diagnostic clarity with reduced radiation exposure, underlining its significance in patient care, particularly for patients requiring multiple scans. The results demonstrated that while both systems were effective, PCCT offered enhanced imaging and patient safety in neuroradiological evaluations.
摘要：
这项研究提供了光子计数探测器（PCCT）和能量集成探测器（EID）之间的颅骨计算机断层扫描（CT）成像质量和辐射剂量的客观比较。我们回顾性分析了76例患者的158例CT扫描，在同一个体上使用两种检测器类型以确保一致的比较。我们的分析集中在计算机断层扫描剂量指数和剂量长度乘积以及脑灰质和白质的对比度噪声比和信噪比上。我们利用标准化的成像协议和一致的患者定位来最小化变量。PCCT显示出更高的图像质量和更低的辐射剂量的潜力，正如这项研究所强调的那样，从而在减少辐射暴露的情况下实现诊断清晰度，强调其在病人护理中的重要性，特别是对于需要多次扫描的患者。结果表明，虽然这两个系统都是有效的，PCCT在神经放射学评估中提供了增强的成像和患者安全性。
