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CTにおける信号雑音比による低コントラスト分解能の評価
Evaluation of Low Contrast Detectability using Signal-to-noise Ratio in Computed Tomography
2007
Medical Imaging and Information Sciences
Evaluation of Low Contrast Detectability using Signal-to-noise Ratio in Computed Tomography
In this paper, we proposed a new quantitative evaluation method of low-contrast detectability for computed tomography(CT)images. It is well known that the contrast-noise-ratio is not enough for CT images to evaluate the lowcontrast detectability as image quality index corresponding to various images with different frequency properties. In order to overcome this problem, we adopted a signal-to-noise ratio based on the matched filter model using low-contrast rod images (disc images)as the input
doi:10.11318/mii.24.106
fatcat:hntaffzyhvbt3fb3a4lgyhvxmi