منابع مشابه
Adaptive Segmentation of MRI Data
Intensity-based classification of MR images has proven problematic, even when advanced techniques are used. Intrascan and interscan intensity inhomogeneities are a common source of difficulty. While reported methods have had some success in correcting intrascan inhomogeneities, such methods require supervision for the individual scan. This paper describes a new method called adaptive segmentati...
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In this paper, we present a novel algorithm for adaptive fuzzy segmentation of MRI data and estimation of intensity inhomogeneities using fuzzy logic. MRI intensity inhomogeneities can be attributed to imperfections in the RF coils or some problems associated with the acquisition sequences. The result is a slowly-varying shading artifact over the image that can produce errors with conventional ...
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This article presents the application of a segmentation algorithm based on numerical solution of a partial differential equation of the level set type with incorporated a priori knowledge of the processed data. The semi-implicit complementary-volume numerical scheme is used to derive the algorithm. In particular, we focus on the segmentation of the left heart ventricle from the cardiac MRI data...
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In this paper, we present a novel algorithm for adap-tive fuzzy segmentation of MRI data and estimation of intensity inhomogeneities using fuzzy logic. MRI intensity inhomogeneities can be attributed to imperfections in the RF coils or some problems associated with the acquisition sequences. The result is a slowly-varying shading artifact over the image that can produce errors with conventional...
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Functional Magnetic Resonance Imaging (fMRI) is a recently developed neuroimaging technique with capacity to map neural activity with high spatial precision. To locate active brain areas, the method utilizes local blood oxygenation changes which are reflected as small intensity changes in a special type of MR images. The ability to non-invasively map brain functions provides new opportunities t...
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ژورنال
عنوان ژورنال: IEEE Transactions on Medical Imaging
سال: 1996
ISSN: 0278-0062,1558-254X
DOI: 10.1109/42.511747