Phase-contrast magnetic resonance imaging
Semiautomated 3D liver segmentation using computed tomography and magnetic resonance imaging
... arterial phase and portal venous phase with delays of 40 seconds and 60 seconds, ...venous phase from the 41 subjects was used for seg- mentation as it provides homogeneous enhancement of the liver ...
181
Animal Functional Magnetic Resonance Imaging: Trends and Path Toward Standardization
... Cerebral blood flow can be measured non-invasively with Arterial Spin Labelling (ASL), which uses radiofrequency pulse(s) to magnetically label the blood water in major arteries by inverting the longitudinal ...
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Automated left ventricular diastolic function evaluation from phase-contrast cardiovascular magnetic resonance and comparison with Doppler echocardiography.
... in imaging principles of the two techniques, including the difficulties of plane or beam positioning, but also by technical limitations inherent to the CMR ...PC-CMR imaging as opposed to Doppler ...
12
Volume coil based on hybridized resonators for magnetic resonance imaging
... area, Magnetic Resonance Imaging (MRI) is one of the major diagnostic modalities based on the quantum spin of ...static magnetic field B0, spins tend to align either positively or negatively, ...
7
Acquisition and reconstruction methods for magnetic resonance imaging
... weighted imaging (SWI) ...raw phase of each echo, normalizing by their TEs, and averaging to improve ...for imaging phase and susceptibility ...the phase of the imaged object, otherwise ...
138
Pathological mechanism for delayed hyperenhancement of chronic scarred myocardium in contrast agent enhanced magnetic resonance imaging
... Experimental protocol Isolated hearts were placed in Langendorff perfusion apparatus positioned in the center of a 7T magnet. The hearts were perfused by mixture of pig blood with K-H solution at perfusion pressure of ...
10
Ascending aorta backward flow parameters estimated from phase-contrast cardiovascular magnetic resonance data: new indices of arterial aging
... Methods We studied 80 asymptomatic subjects without overt car- diovascular disease and free of significant aortic regurgi- tation (50 men, age: 42±17 years) who underwent cine and PC-CMR imaging of the thoracic ...
3
Geometric and numerical methods in the contrast imaging problem in nuclear magnetic resonance
... The contrast imaging problem was analyzed in a series of recent articles using geometric optimal control [ 6 , 11 ] or numerical indirect methods [ 7 ], and leads to experimental work described in [ 10 , 26 ...
42
Design algorithms for parallel transmission in magnetic resonance imaging
... resulted in slightly less on‐resonance uniformity than the narrow‐band design, but significantly better mitigation than RF shimming alone. Figure 50a) shows the standard deviation ( σ ) plots comparing the ...
158
Molecular Magnetic Resonance and Ultrasound Imaging of Tumor Angiogenesis
... Micro Marker ανβ3-targeted and control (IgG) mi- crobubbles (Visual Sonics, Toronto) with a diameter of approximately 2-3 µm were manually injected via the retro-orbital vein (50 µL per injection, injection time: 2 ...
10
Advances in perfusion magnetic resonance imaging in Alzheimer’s disease
... / La version de cette publication peut être l’une des suivantes : la version prépublication de l’auteur, la version acceptée du manuscrit ou la version de l’éditeur. For the publisher’[r] ...
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Mechanostereoselective One-Pot Synthesis of Functionalized Head-to-Head Cyclodextrin [3]Rotaxanes and Their Application as Magnetic Resonance Imaging Contrast Agents
... This imaging study evidences that both rotaxanes dis- play higher contrast enhancement than the commercial CA Gd-DOTA over the full observation period, without the typical liver accumulation observed for ...
6
On Single-Image Super-Resolution in 3D Brain Magnetic Resonance Imaging
... [1]. Magnetic resonance imaging (MRI), in particular T1-weighted scans, is well suited for structural studies of brain changes since it provides high soft tissue contrast and allows multiple ...
5
On the generation of sampling schemes for Magnetic Resonance Imaging
... The latter is really uncommon in the literature and is actually an important challenge since it might permit to uncover the meso-scale brain architecture at ultra-high magnetic field (7 T and above). For ...
48
Parallel magnetic resonance imaging reconstruction problems using wavelet representations
... Parallel Magnetic Resonance Imaging As detailed in Section ...the phase encoding step has also to be ...global imaging time without significantly degrading the image quality is of great ...
209
Combining electroencephalography and functional magnetic resonance imaging for neurofeedback
... 2.1 i n t r o d u c t i o n tal and cognitive disorders. Thus NF exists in two different forms: the current state of research, and its practical applications. These two forms are not neces- sarily mutually ...
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Compact tomographic X-ray phase-contrast imaging of breast cancer
... We further combine quantitative phase imaging with computed tomography (CT) which enables us to investigate internal structures in 3D. Existing techniques for phase r[r] ...
108
On Single-Image Super-Resolution in 3D Brain Magnetic Resonance Imaging
... non-invasive imaging technique used to visualize internal body ...external magnetic field. Similar to any other imaging modality, the loss of spatial res- olution in the acquisition process can be ...
6
Diffusion Maps Clustering for Magnetic Resonance Q-Ball Imaging Segmentation
... diffusion magnetic resonance imag- ing (dMRI) can help recovering complex white matter fiber ...tensor imaging (DTI) [ 1 ] is restricted in these conditions due to the hypothesis that the diffusion ...
13
Spatio-spectral regularization to improve magnetic resonance spectroscopic imaging quantification
... (19,20), as implemented in (7 –9). More recently, some quantifica- tion methods have proposed exploiting not only the spectral but also the spatial context of MRSI signals by incorporating spatial priors into the ...
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