نتایج جستجو برای: partial volume effects

تعداد نتایج: 2012014  

Journal: :Japanese Journal of Radiological Technology 1984

Journal: :Japanese Journal of Radiological Technology 1992

Journal: :Proceedings of the National Academy of Sciences 1987

Journal: :Japanese Journal of Radiological Technology 1996

2005
Hillary Protas Paul M. Thompson Kiralee M. Hayashi

Objectives Due to the small thickness of cortical gray matter in the brain, biological interpretation of image values in the cortical regions on FDG PET images is confounded by tissue atrophy and partial volume effects, especially in patients with Alzheimer Disease (AD). In this study, we developed a method that employs a well established MRI-based cortical brain surface mapping technique to ac...

2017
Pascal Monnin Nicolas Sfameni Achille Gianoli Sandrine Ding

Longitudinal partial volume effects (z-axial PVE), which occur when an object partly occupies a slice, degrade image resolution and contrast in computed tomography (CT). Z-axial PVE is unavoidable for subslice objects and reduces their contrast according to their fraction contained within the slice. This effect can be countered using a smaller slice thickness, but at the cost of an increased im...

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