| 摘要 |
For the purpose of RF pulse tuning so as to effectively utilize the capacity of an RF transmission apparatus, in tuning the RF pulse for excitation use so as to make the flip angle of spins identical with its target value, the pulse width of the RF pulse is consecutively increased from its predetermined initial value until the flip angle of spins become identical with its target value (902 through 912). Further, if the flip angle fails to reach its target value even though the amplitude of the RF pulse is raised to the adjustable maximum, the next increment of the pulse width is determined according to the extent of failure to attain the target.
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