Magnetic microparticles as labeling or contrast medium for medical imaging, an in-vitro feasibility study

Magnetic microparticles such as ferrite or magnetite are suggested for another contrast media than the micro gas bubble family. It can be magnetically agitated when sent to a moving or non-moving body fluid in a body cavity or the capillary system. In vitro phantom tests using 4-5 micron soft ferrite powder proves its feasibility as contrast or labeling media, although safe and controlled admission for animals or humans is yet largely unknown.