The use of contrast -- detail -- dose evaluation of image quality in a computed tomographic scanner.

摘要: Limiting-perception measurements of hole patterns in computed tomography reconstructions a low-contrast phantom are used to generate contrast -- detail dose diagrams for various contrasts, diameters, dose, and system modulation transfer functions (MTF). These curves then divided into MTF-dominated, transition, noise-dominated regions. The perceptibility image noise parameterized compared. A limiting-perception factor is difined shown be nearly independent contrast, diameter, MTF the region.