Signal voids of active cardiac implants at 3.0 T CMR.

For device 3, however, there was a strong trend towards smaller B1 field in cranial direction, with the areas in the corner showing a B1 field reduced by up to 35% compared to the measurements in absence of a device.

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Whereas there was a small trend towards smaller B1 values particularly in the front slices (farthest from the front opening, “cranial”), differences were much smaller than the standard deviation over the entire phantom and not significant.

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