| CPC G01R 33/0029 (2013.01) [G01R 33/383 (2013.01)] | 17 Claims |
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1. A method, comprising:
projecting a low-field strength magnetic field toward an object of interest located within a field of view;
transmitting a radio frequency pulse sequence to a radio frequency coil assembly configured to selectively excite magnetization in the object of interest within the field of view, wherein the radio frequency pulse sequence defines a time of repetition and comprises a signal acquisition period within each time of repetition;
receiving an output signal from the radio frequency coil assembly during the signal acquisition period;
receiving a sample signal from the radio frequency coil assembly at an interference period within the time of repetition, wherein the interference period flanks the signal acquisition period, wherein the interference period comprises a pair of interference periods flanking the signal acquisition period, wherein the pair of interference periods comprises a first interference period and a second interference period, wherein the first interference period and the second interference period are symmetric with respect to the signal acquisition period therebetween, and wherein the sample signal comprises a first sample signal received in the first interference period and a second sample signal received in the second interference period;
comparing the output signal and the sample signal to identify an interference component, wherein comparing the output signal to the sample signal to identify the interference component comprises comparing the first sample signal to the second sample signal to identify interference arising during both the first sample signal and the second sample signal;
adjusting the output signal based on the interference component; and
recording the adjusted output signal in a k-space matrix.
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