[PDF] Top 20 Development and optimisation of high-field MRI techniques

... numerical optimisation algorithm once the coil has been loaded with the ...a high-B i central region that is slightly oblique for the quadrature drive, and is only slightly better for 4-port Tx and ... See full document

... In practice, the performance evaluation of supercomputers is still substantially driven by singlepoint estimates of metrics (e.g., MFLOPS) obtained by running characteristic benchmarks or workloads. With the rapid ... See full document

... topology optimisation to buildings and civil engineering ...Topology optimisation problems utilize the firmest mathematical basis, to account for improved weight-to-stiffness ratio and perceived aesthetic ... See full document

... multi-phase optimisation strategy is a process rec- ommended for developing and evaluating e-Health inter- ventions through identifying and refining active intervention components and their dose prior to under- ... See full document

... shape of the hyper-surface and provides a fast evaluation of any point in it. Typically, the neural network is trained in a batch mode, prior to the optimisation process – essentially ªoff-lineº (Arkadan and Chen, ... See full document

... clinical MRI settings are addressed, and solutions for practical problems are ...clinical MRI techniques can be translated to non-invasive small animal pancreatic imaging with high ... See full document

... standard MRI systems without the need for sophisticated hard- or ...on high field ...in MRI images acquired with a multi-element transmit coil by adjusting transmit phases and/or ...static ... See full document

... laboratory techniques and experiments may also be unsatisfactory because of the insufficient practical hours (Short & Tomlinson, ...laboratory techniques due to only one session of the practical ... See full document

... UHF MRI techniques, including the LFS and QS mapping methods detailed in this thesis, potentially offer more accurate visualization of early myelin changes in gray and white matter not visualized on ... See full document

... magnetic field strengths available clinically (3T) or for re- search ( ⱖ ...These techniques make locating microbleeds in- creasingly easier due to the increased SNR, which makes increased resolution ... See full document

... coupling between adjacent resonant loops by overlapping the adjacent loops. When the overlap in loops approaches roughly ~ 15% of their total area, the EMF induced in either loop is cancelled by the voltage present in ... See full document

... The development of AD pathology is thought to begin up to decades before presentation of the first clinical symptoms. Individuals who show some AD pathology, but no clinical symptoms can be termed as having ... See full document

... treatment, high-resolution arterial imaging by DSA or CT angiography is used to plan ...between field strengths, 7T exhibited higher sensitivity and specific- ity than 3T for detecting flow voids and ... See full document

... require any additional hardware beyond what is already being used for MRI. Compared to DTI, the application of MRS to SCI may have more advantages. For instance, MRS can provide metabolic information about the ... See full document

... Our observations on seasonal fluctuations in the field emphasize the importance in assessing larval numbers, of the time of year, presence or absence of a host crop and previous cropping. Such information is also ... See full document

... Computing techniques in the recent past have been used by researchers either in isolation or in conjunction with Adaptive Median filter or Median filter to de-noise ... See full document

... of high resolution and high imaging definition, especially for display of soft tissue, the technology of magnetic resonance imaging (MRI) has developed rapidly since 1980s, and the MRI device ... See full document

... the optimisation of each group takes advantage from combining the global but slow search of PSO with the rapid but local search of Quasi-Newton method ...the optimisation, the first group provides the ... See full document

... 5-1 5-2 5-3 Measured process variables and output of SSD module, filtering not applied, test based on first measurement 126 Ratio of the two variances, critical value and output SSD of m[r] ... See full document

... with the mean flip angle of 63.0°. The mean flip angle of 63.0° is near to the target value of 65.5°. The initial flip angle uniformity in Figure 6d is 18.0%, whereas the uniformity in Figure 6e is 8.0% with the mean ... See full document