Magnetic resonance imaging apparatus and method for detecting error of magnetic resonance imaging apparatus

A magnetic resonance imaging apparatus comprising:

• a radio frequency (RF) coil configured to transmit and receive an RF signal;
• a bias circuit configured to detune the RF coil in a RF signal transmission mode, and tune the RF coil in a RF signal reception mode;
• a monitoring circuit configured to:
• monitor, in the RF signal transmission mode, a parameter among a bias voltage and a bias current during a first monitoring time period that is shorter than a duration of the RF signal transmission mode;
• and
• monitor, in the RF signal reception mode, the parameter among the bias voltage and the bias current during a second monitoring time period that is shorter than a duration of the RF signal reception mode;
• and
• a controller configured to determine whether the bias circuit is in an abnormal state, based on the monitored parameter among the bias voltage and the bias current.

A method of detecting an error of a magnetic resonance imaging apparatus comprising a radio frequency (RF) coil transmitting and receiving an RF signal, and a bias circuit tuning and detuning the RF coil, the method comprising:

• monitoring a parameter among a bias voltage and a bias current of the bias circuit;
• and
• determining, when the monitored parameter among the bias voltage and the bias current in a steady state, whether the bias circuit is in an abnormal state, based on a determination criteria and the monitored parameter;
• and
• determining, when the monitored parameter among the bias voltage and the bias current is in a transient state, whether the bias circuit is in the abnormal state, based on a second determination criteria and the monitored parameter.

A method of detecting an error of a magnetic resonance imaging apparatus comprising a radio frequency (RF) coil transmitting and receiving an RF signal, and a bias circuit tuning the RF coil in a RF signal transmission mode and detuning the RF coil in a RF signal reception mode, the method comprising:

• monitoring, in the RF signal transmission mode, a parameter among a bias voltage and a bias current during a first monitoring time period that is shorter than a duration of the RF signal transmission mode;
• monitoring, in the RF signal reception mode, the parameter among the bias voltage and the bias current during a second monitoring time period that is shorter than a duration of the RF signal reception mode;
• and
• determining whether the bias circuit is in an abnormal state, based on the monitored parameter among the bias voltage and the bias current.