Fig. 5.

The figure shows a comparison between spurious echo noise scans with A: operating our newly developed set-up within the MR scanner room and B: operating the electrical equipment outside the 5 Gauss line within the scanner room. Background noise levels were 8 times higher running the pump within the scanner room and additionally there was high intensity at 330 kHz that would potentially result in image artefacts. There was no difference between running the novel set-up and background noise levels in the scanner room without any equipment (data not shown)