Jennifer Nussbaum1, Simon Gross1, David O. Brunner1, Christoph Barmet1,2, Thomas Schmid1, Benjamin E. Dietrich1, Markus Weiger1, and Klaas P. Pruessmann1
the spatiotemporal magnetic field evolution during MR procedures for image reconstruction
and real-time field control, best field probe performance is desired. We propose
improved field probes with 19F spherical droplet samples formed and positioned
with gelled deuterium oxide. It is shown
that these spherical samples have an isotropic k-space range and thus de-phase
less along the capillary than the common probes. Furthermore, with BIR-4 adiabatic plane rotation pulses the flip angle can
be perfectly adjusted, opening a new realm of field monitoring methods.