PROBLEM TO BE SOLVED: To provide a system capable of imaging tissue including magnetically susceptible elements.SOLUTION: The system performs positive contrast localization of magnetic (e.g., superparamagnetic) particles in vivo or in vitro by means of SWIFT-MRI using the imaginary component of MR image data in combination with an anatomic reference image derived from the real component or the magnetic component.SELECTED DRAWING: Figure 5B
LOCALIZATION OF MAGNETIC PARTICLES BY MEANS OF SWIFT-MRI