Magnetic resonance imaging 3.0 T
Diffusion Maps Clustering for Magnetic Resonance Q-Ball Imaging Segmentation
... whole-body 3 Tesla Magne- tom Trio scanner (Siemens, Erlangen) equipped with an 8- channel head array coil [ 36 ...echo-planar- imaging sequence, TE = 100 ms, TR = 12 s, 128 × 128 image matrix, FOV = 220 × ...
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Design algorithms for parallel transmission in magnetic resonance imaging
... in 3 equally spaced sections along z within the excited slice provides a good compromise between computation cost and acceptable convergence to the desired ...
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3D SPARKLING trajectories for high-resolution T2*-weighted Magnetic Resonance imaging
... Fig. 6. 0.6 mm isotropic ex vivo results comparing z-variable stack-of-sparkling (SOS), 3D radial and 3D Poisson disk lines (PD-lines) sampling for a total number of shots of 1140, i.e., an acquisition time of 45 s. FOV ...
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On Single-Image Super-Resolution in 3D Brain Magnetic Resonance Imaging
... Unlike the conventional unfolding performed in 3D reconstruc- tion algorithms such as in [6], this method unfolds the tensor sequen- tially, in each direction, thus preserving the local 3D information. 2.3. 3D ...
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Gradient waveform design for variable density sampling in Magnetic Resonance Imaging
... B. Simulations Next, we performed simulations to show that the sampling density is better preserved using our approach than relying on the optimal control approach. For doing so, we use travelling salesman-based (TSP) ...
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Molecular Magnetic Resonance and Ultrasound Imaging of Tumor Angiogenesis
... molecular imaging, whatever imaging modalities, MR or ...simultaneous imaging by both modalities does not provide any evidence that could explain the funda- mental biological fixation ...
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Spatio-spectral regularization to improve magnetic resonance spectroscopic imaging quantification
... estimation error is measured as RMSE k,r averaged over all me- tabolites and all voxels. The increase in accuracy due to the in- corporation of the spatial –spectral prior (in the proposed method) is clearly observed. ...
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Advanced image reconstruction in parallel magnetic resonance imaging : constraints and solutions.
... in the outer region. Both kNyquisl and .1k mu are important determinants of the quality of self-calibrating parallel image reconstructions. In order to ensure accurate extraction of sensitivity information, we chose a ...
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Volume coil based on hybridized resonators for magnetic resonance imaging
... cage. 3 Here, the reso- nance frequencies are now fixed by the resonance frequency of the half-wavelength dipoles and the hybridization ...a resonance frequency more sensitive to the dielectric index ...
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New insights on gas hydrate formation in sand through magnetic resonance imaging
... C 3 H 8 , CO 2 , N 2 , H 2 , THF, etc [1-8]. The discovery of this interesting substance goes back to 1811 when Sir H umphry Davy observed a hydrate of chlorine in his lab [9]. In 1934, Hammerschmidt reported the ...
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Combining electroencephalography and functional magnetic resonance imaging for neurofeedback
... 2.3.2 Today: diversification of approaches Thus, the beginnings of NF were marked by scientific discoveries that were both surprising and promising, but also by the parallel development of a new age industry based ...
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Biomechanical modeling and Magnetic Resonance Imaging to investigate CSF flow physiology
... of 3 rigid tubes of length L k and sec- tion A k , k ∈ {s, v, c}, filled of cerebro-spinal fluid (CSF) of density ρ and dynamic viscosity µ, and ended with 3 compliant ...
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Integration of magnetic resonance spectroscopic imaging into the radiotherapy treatment planning
... 5.4 Discussion In order to apply the MRSI technique to routine clinical practice, it is im- portant to maximize the accuracy and the robustness of the quantification. Additionally, both processing time and technique ...
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Semiautomated 3D liver segmentation using computed tomography and magnetic resonance imaging
... Axial portal venous phase CT images for each patient were saved as DICOM files and uploaded onto an imaging post-processing display software (SliceOmatic 4.3 Rev-11, TomoVision, Montreal, Canada). For a given ...
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Spatio-spectral regularization to improve magnetic resonance spectroscopic imaging quantification
... Experiments with synthetic data show that the proposed method increases the accuracy and the robustness of the quan- tification against noise (Fig. 3). The presented spectral –spatial prior prevents the ...
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On Single-Image Super-Resolution in 3D Brain Magnetic Resonance Imaging
... Unlike the conventional unfolding performed in 3D reconstruc- tion algorithms such as in [6], this method unfolds the tensor sequen- tially, in each direction, thus preserving the local 3D information. 2.3. 3D ...
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Evaluating Computational Models of Vision with Functional Magnetic Resonance Imaging
... in Magnetic Resonance images, a pattern of brain atrophy centered on the thalamus predicts the evolution in Alzheimer’s disease for elderly patients [Stonnington et ...Functional Magnetic ...
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Sleep stabilizes visuomotor adaptation memory: a functional magnetic resonance imaging study
... ± 3 years, 16 females), right-handed (Oldfield, 1971), healthy volunteers were recruited by ...a 3-day constant sleep schedule before the first visit and kept to the same schedule for three more days, until ...
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Animal Functional Magnetic Resonance Imaging: Trends and Path Toward Standardization
... We assessed studies performed using animals, i.e., all species except homo sapiens. The rat and specifically the Sprague– Dawley strain was the most common species and strain used in fMRI studies, representing 55% of the ...
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On the generation of sampling schemes for Magnetic Resonance Imaging
... The first contribution of this paper is to provide a review of existing theoretical CS results in Section 3. This review permits to establish general principles for designing efficient sampling patterns. The ...
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