论文标题
散射和电子噪声对选择伽玛计算机断层扫描的检测器的影响
Effect of scattering and electronic noise upon selection of detectors for Gamma Computerized Tomography
论文作者
论文摘要
由于技术发展和持续改进，计算机断层扫描（CT）已成为各个领域的重要工具。对于图像解释和从CT图像获取信息的高质量CT图像是可取的。各种事情都会影响CT图像质量。各种研究小组已经研究并试图通过检查与CT几何形状相关的噪声/误差来改善图像质量。这项研究旨在选择CT检测器，该检测器在投影数据中产生最少的噪声。在CT中通常使用的三个不同的伽马射线检测器已在散射和电噪声方面进行了比较。这项工作证明了坎普尔定理1对散射噪声的敏感性，并用于量化散射噪声的相对水平。检测器多次测量信号，并使用信号的标准偏差来计算电子噪声。观察到与常规电子探测器相比，IC CSI（TL）闪烁检测器会产生低电子噪声和相对散射噪声。 NAI（TL）和HPGE。
Computed tomography (CT) has become a vital tool in a variety of fields as a result of technological developments and continual improvement. High-quality CT images are desirable for image interpretation and obtaining information from CT images. A variety of things influence the CT image quality. Various research groups have investigated and attempted to improve image quality by examining noise/error associated with CT geometry. This study aims to select detectors for CT, which yield the least amount of noise in projection data. Three distinct gamma-ray detectors that are routinely used in CT have been compared in terms of scattering and electrical noise. The sensitivity of Kanpur Theorem-1 to scattering noise is demonstrated in this work and used to quantify the relative level of scattering noise. The detector measures the signal multiple times, and the standard deviation of the signal is used to calculate the electronic noise. It is observed that IC CsI(Tl) scintillation detector produces low electronic noise and relative scattering noise as compared to conventional electronic detectors; NaI(Tl) and HPGe.
