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a Magnetic device, comprising two oppositely polarized magnets, enhances magnetic drug targeting in deep tissues. b Magnetic device contains a sharp zero point surrounded by constant field gradients. c Pre- and postcontrast images have similar signal distributions in the control. However, mice that have been exposed to the device show much less T2 signal (hypointensity) postcontrast. Water control labeled “w”. Scale bar = 5 mm.
Reproduced with permission from Ref. [211]
