Fast automatic segmentation of thalamic nuclei from MP2RAGE acquisition at 7 Tesla
نویسندگان
چکیده
منابع مشابه
Acquisition Methods for fMRI at 7 Tesla
FMRI and high field, which application? For most imaging applications the benefit of 7+ Tesla scanners is quite obvious: there is more signal which can be used to improve SNR-starved images or, in case of an SNR surplus, it can be invested in shorter acquisitions without compromised image quality. In the typical BOLD fMRI experiment (2-3 mm isotropic spatial resolution, volume TR of 2-3 seconds...
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The nuclei of the thalamus have traditionally been delineated by their distinct cyto/myeloarchitectural appearance on histology. Here, we show that diffusion tensor magnetic resonance imaging (DTI) can noninvasively resolve the major thalamic nuclei based on the characteristic fiber orientation of the corticothalamic/thalamocortical striations within each nucleus. Using an automatic clustering ...
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Recent work shows that diffusion tensor imaging (DTI) can help resolving thalamic nuclei based on the characteristic fiber orientation of the corticothalamic/thalamocortical striations within each nucleus. In this paper we describe a novel segmentation method based on spectral clustering. We use Markovian relaxation to handle spatial information in a natural way, and we explicitly minimize the ...
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PURPOSE To compare two pulsed, volumetric chemical exchange saturation transfer (CEST) acquisition schemes: steady state (SS) and pseudosteady state (PS) for the same brain coverage, spatial/spectral resolution and scan time. METHODS Both schemes were optimized for maximum sensitivity to amide proton transfer (APT) and nuclear Overhauser enhancement (NOE) effects through Bloch-McConnell simul...
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Several recent studies explored the use of unsupervised segmentation methods for segmenting thalamic nuclei from diffusion tensor images. These methods provide a plausible segmentation on individual subjects; however, they do not address the problem of consistently identifying the same functional areas in a population. The lack of correspondence between the segmented nuclei make it more difficu...
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ژورنال
عنوان ژورنال: Magnetic Resonance in Medicine
سال: 2020
ISSN: 0740-3194,1522-2594
DOI: 10.1002/mrm.28608