Effect of electromagnetic interference on very low-field images

Motivation: Very low-field MRI offers several benefits related to accessibility. However, electromagnetic interference (EMI) poses a significant challenge by degrading SNR. Hence, evaluating the effect of EMI on image quality is improvement. Goal(s): The study aims to investigate the influence of EMI on image quality using 50mT. Approach: We varied the distance and amplitude of the EMI producing coil from signal generator. We analyzed the effect of EMI on the image quality. Results: As expected, the SNR decreases with an increase in amplitude. The standard deviation and RMS of the background increase as the increase in amplitude and decrease in distance. Impact: Highlight the influence of EMI on image quality.The results indicate that as the amplitude of the coil increases or the distance between the transmitter and scanner decreases, the signal-to-noise ratio decreases, the standard deviation and RMS of the background increase.