近期宽视野闪烁γ相机的性能评估。
Performance evaluations of recent wide field scintillation gamma cameras.
作者信息
Lim C B, Hoffer P B, Rollo F D, Lilien D L
出版信息
J Nucl Med. 1978 Aug;19(8):942-7.
Performance characteristics of four recent wide field scintillation gamma cameras were evaluated for 140-keV gamma imaging. Parameters measured included intrinsic spatial resolution, energy resolution, uniformity and linearity distortion, and count-rate capability and its influence on the spatial resolution. The system performance of the cameras was compared with representative parallel-channel collimators in terms of spatial resolution and relative sensitivity. Visual imaging comparisons of each camera system were performed by taking images of Rollo phantom containing four different lesion sizes, with four different contrast ratios, for equal imaging time.
对四台最新的宽视野闪烁γ相机进行了140 keVγ成像的性能特性评估。测量的参数包括固有空间分辨率、能量分辨率、均匀性和线性畸变，以及计数率能力及其对空间分辨率的影响。根据空间分辨率和相对灵敏度，将这些相机的系统性能与代表性的平行通道准直器进行了比较。通过在相同成像时间内拍摄包含四种不同病变大小、四种不同对比度的Rollo体模图像，对每个相机系统进行了视觉成像比较。
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