Active compensation of rf-pulse transients.
A new approach to compensate rf-pulse transients is proposed. Based on the idea of the response theory of a linear system, a formula is derived to obtain the required excitation voltage profile back from the intended target rf-pulse shape. The validity of the formula is experimentally confirmed by monitoring the rf-field created inside the sample coil with a pickup coil. Since this approach realizes accurate rf-pulse shapes without reducing the Q-factor of the tank circuit of the probe, it can be used not only to suppress the transient tail of the rf-pulse, but also as a general concept for accurate rf-pulsing.
Takeda
Kazuyuki
K
Division of Chemistry, Graduate School of Science, Kyoto University, Sakyo, 606-8502 Kyoto, Japan. takezo@kuchem.kyoto-u.ac.jp
Tabuchi
Yutaka
Y
Negoro
Makoto
M
Kitagawa
Masahiro
M
D000465:Algorithms; D009682:Magnetic Resonance Spectroscopy / Q000379:methods* / Q000706:statistics & numerical data*; D016011:Normal Distribution; D015203:Reproducibility of Results