General Electric Company

Atsushi Mark Takahashi

Richard Scott Hinks

The present embodiments are directed towards artifact reduction in slice select pulse sequences utilized in ultra short echo time imaging sequences. In one embodiment, a method includes determining a desired slice select thickness, determining a radiofrequency pulse shape and duration based upon the desired slice select thickness while maintaining a desired relationship between excitation k space and radiofrequency amplitude, and determining radiofrequency scaling based on the determined radiofrequency pulse shape and duration.

Reduction of slice select artifacts in half pulse excitations used in ultrashort TE (UTE) imaging

A pulse sequence is defined to acquire calibration MR data used to characterize on-axis and cross-axis eddy currents resulting from gradient pulses used to spatially encode MR data. The amplitudes and time constants of those eddy currents can then be measured and used to guide calibration of an MRI system to reduce image artifacts.

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Menlo Park, CA, United States of America

Atsushi Mark Takahashi