We are developing a near/in MRI bore device and we are having imaging artifacts in our 1.5 t/64 MHz MRI scans. We are comfortable with shielding devices for far field EMI and have done this successfully in the past. We are using similar techniques for this product and we are not seeing noise in the 64 MHz range using our off site test equipment. We are however seeing near field magnetic and electric noise near the pcb components. We know we can shield the electrical component but will not be able to shield the magnetic component without using ferrous metal. We are not sure the magnetic component is the cause of our as the noise appears at many frequencies but not near 64 MHz. My 2 thoughts are why does this small noise make artifacts as it dissipates an inch or so from the pcb and the frequencies are different. I am wondering if the distance may not matter. As the scanner moves and encodes voxels across a region, perhaps it encodes the small magnetic noise as it encodes the pcb area. And I am wondering if the magnetic frequency not being near 64 MHz matters as the noise would be heavily affected by the eddy currents and changing gradients so in my mind, who knows what this might be doing to the small magnetic noise and vise versa. My gut tells me any small amount of broad noise, possibly changing noise (think electronic component arcing) is easily picked up by the MRI and the like arcing noise it is aggressively distributed across the MRI image…Any thoughts or experiences appreciated!