医用X線CTにおけるサンプリングパラメータと画質の関係に関する基礎的研究 : 量子ノイズの解析的モデルの構築

概要

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The x-ray CT scanner is one of the most important kinds of medical equipment. Especially important is the multislice CT, which presents the new modality of faster gantry rotation speed and multiple detector row system, which produces higher resolution images with faster scan time and wide scan range. So, it is begun to be used for medical checkups. But on the other hand, it is known that radiation is detrimental to human health. The patient dose depends on scanning parameters. In this paper, we studied the relationship between canning-parameter and image quality, and tried to construct a theoretical model of quantum noise in the x-ray CT images. In this model, the theoretical probability density function of projection date was obtained.
岐阜工業高等専門学校の論文
2004-03-01