Noise has profound influence on CT image quality.
噪声是影响CT图像质量的重要因素。
The sizes of focal spot and detector aperture are the factors affecting ct image quality.
射线源焦点及探测器孔径大小是导致CT图象降质的主要因素。
Ct image quality for mass and patch in the lung of patients that were selected randomly was compared.
比较了不同扫描条件下，患者肺部肿块影及片状影的CT图像质量。
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