Keywords: Signal Representations, Signal Representations
Motivation: Point-of-Care Low Field MRI scanners are predominantly stifled by generic time-varying EMI, engendered by adjoined scanner electronics, environmental interference & radiation close to the lamor frequency and extraneous , creating decreased signal-to-noise ratio and artifacts on images.
Goal(s): Passive Faraday Shielding & Effectiveness Testing, EMI Detection, Cancellation using a single RF coil.
Approach: Passive Faraday Shielding using Aluminium and Copper sheets, Shielding Effectiveness testing using calibrated transmitters and receivers, EMI detection & cancellation using a single RF coil.
Results: Faraday Passive Shielding done and upto 74dB EMI attenuation effective. Active EMI detection & cancellation showed EMI reduction up to approximately 53% in signal strength and 46% image quality.
Impact: Broadband and Structured EMI elimination using passive faraday shielding with additional suppression techniques like system grounding, detection and elimination using a single coil will significantly improve signal strength by curbing signal loss and consequently better image quality.
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