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Method of Evaluating the Resolution of a Volumetric Imaging System and Image Phantom Used During the Resolution Evaluation
Method of Evaluating the Resolution of a Volumetric Imaging System and Image Phantom Used During the Resolution Evaluation
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机译:体积成像系统分辨率的评估方法和分辨率评估过程中使用的图像幻像
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摘要
A method for evaluating the spatial resolution of a volumetric medical imaging system comprises imaging an image phantom including a sphere surrounded by a uniform medium. The image phantom is imaged and the resulting volumetric data set is used to generate an edge response function in three dimensions. Differentiating the edge response function produces a plane spread function. The method simultaneously measures the spatial resolution in all directions, providing a bulk measurement resolution. Alternatively, the edge response function may be assembled in a manner so as to independently measure the axial and trans-axial resolution of the volumetric imaging system.
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