Meeting Banner
Abstract #0595

Continuous Motion Tracking and Correction Using NMR Probes & Gradient Tones

SUMMA25Maximilian Haeberlin1, Lars Kasper1, David Otto Brunner1, Christoph Barmet1, Klaas Paul Pruessmann1

1Electrical Engineering, Institute for Biomedical Engineering, Zurich, Switzerland

We propose to combine NMR field probes and gradient reference tones as a means to autocalibrate real-time slice tracking for head MRI. Being fully autocalibrated, the method needs no extra sequence parts for position determination and is very sensitive for typical readouts.

Keywords

acquisition adding additional affected allow amplitude applied approx around artifacts asked band bands biomedical body bulk calibrated certain channel coil combine concurrently congruence conjunction continuous coordinate correction corrects denoted denotes dense desired despite distinct domain drawbacks dynamic dynamics electrical elements encoding engineering entire even evolution experiment fails field fields filtered filtering fitting fixed frame free frequencies frequency good gradient head healthy heavily impaired in vivo individual injected inserted institute interleave little lived long monitor monitoring motion mounted must nucleus occurred onto optical orthogonal pair patterns periods permanent phantom phones posed position precision prevents probe probes projecting prolongs proportional propose proposed prospective quality rather readily readout readouts real recently reconstructed reconstruction reconstructions rendering repetition repetitions represents resolution reveals rigid rigidly rotational sensitivity sharp short slice slightly solved sometimes space spectrum spin square stop subject substantial superior switched system tailored task tissue tone tones track tracking trajectories trajectory translational unaffected underlying updating volunteer warp waveform