Browsing by Author "Kopanoğlu, Emre"
Now showing items 1-4 of 4
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Decreasing SAR of a multi-dimensional central brightening inhomogeneity correction pulse using nonlinear gradient fields and VERSE
(ISMRM, 2012-05)To correct for B1 inhomogeneity artifacts, multi-dimensional pulses are widely used. However, such pulses increase SAR significantly. In this study, we compare, and combine two SAR reduction methods, the variable rate ... -
Localizing the excitation to reduce scan time using nonlinear gradient fields
(ISMRM, 2012)elatively low SAR, but they cannot excite local regions and therefore causes long scan times. Although small volumes can be excited using multi-dimensional excitation pulses, such pulses are long and/or have relatively ... -
Novel techniques regarding specific absorption rate and field of view reduction in magnetic resonance imaging
(Bilkent University, 2012)In this dissertation, novel strategies regarding the reduction of the specific absorption rate (SAR) and the reduction of the total scan time, and analytic calculation methods for the lower limit on the specific absorption ... -
Statistically segregated k-space sampling for accelerating multiple-acquisition MRI
(IEEE, 2019)A central limitation of multiple-acquisition magnetic resonance imaging (MRI) is the degradation in scan efficiency as the number of distinct datasets grows. Sparse recovery techniques can alleviate this limitation via ...
