Magnetic nanoparticles are being increasingly used in numerous
biomedical applications for diagnosis and therapy. During the course of
these applications nanoparticle biodegradation and body clearance may
In this context, a portable, non-invasive, non-destructive and
contactless imaging device can be relevant to trace the nanoparticle
distribution before and after the medical procedure.
We present a method for $in\:vivo$ imaging the
nanoparticles based on the magnetic induction technique, and we show how
to properly tune it for magnetic permeability tomography, maximizing the
A tomograph prototype was designed and built to demonstrate the
feasibility of the proposed method. It includes data collection, signal
processing and image reconstruction.
Useful selectivity and resolution are achieved on phantoms and animals,
proving that the device can be used to monitor the presence of magnetic
nanoparticles without requiring any particular sample preparation. By
this way, we show that magnetic permeability tomography may become a
powerful technique to assist medical procedures.