Method, system, processing circuitry, and computer program product for calibrating flip angles of non-excitation rf transmit pulses
AssigneeCanon Kabushiki Kaisha
InventorsAndrew James WHEATON, David Otto BRUNNER
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Abstract
A method, system, processing circuitry, and computer program product for calibrating flip angles of non-excitation RF pulses of a magnetic resonance imaging (MRI) pulse sequence based on spatial positions of the non-excitation RF pulses when used as part of a process in which MRI image data is captured (e.g., when using inversion recovery pulses).
Claims21
A method for adjusting a flip angle of a first non-excitation RF pulse of a pulse sequence including excitation RF pulses and the first non-excitation RF pulse when imaging using a magnetic resonance imaging apparatus, the method comprising:
- receiving a B1 correction function in a first dimension;
- receiving the pulse sequence including the excitation RF pulses and the first non-excitation RF pulse;
- and
- adjusting the flip angle of the first non-excitation RF pulse based on the received B1 correction function and based on a first spatial position of the first non-excitation RF pulse.
An apparatus for adjusting a flip angle of a first non-excitation RF pulse of a pulse sequence including excitation RF pulses and the first non-excitation RF pulse when imaging using a magnetic resonance imaging apparatus, comprising:
- processing circuitry configured to:
- receiving a B1 correction function in a first dimension;
- receiving the pulse sequence including the excitation RF pulses and the first non-excitation RF pulse;
- and
- adjusting the flip angle of the first non-excitation RF pulse based on the received B1 correction function and based on a first spatial position of the first non-excitation RF pulse.
A non-transitory computer-readable storage medium storing computer-readable instructions that, when executed by a computer, cause the computer to perform a method comprising:
- receiving a B1 correction function in a first dimension;
- receiving the pulse sequence including the excitation RF pulses and the first non-excitation RF pulse;
- and
- adjusting the flip angle of the first non-excitation RF pulse based on the received B1 correction function and based on a first spatial position of the first non-excitation RF pulse.
Dependencies are inferred from the claim text.