Field perturbations due to hollow spheres with anisotropic magnetic susceptibility

The magnetic field perturbations produced when simple structures composed of materials with isotropic magnetic susceptibility are exposed to magnetic fields have been well documented, but the effect of material of anisotropic magnetic susceptibility has been less explored. Here, we experimentally investigate the field perturbations produced by spherical shells of pyrolytic graphite sheet, a material with a highly anisotropic susceptibility. It is shown that in agreement with theory, uniform, geometry-dependent field offsets are produced inside the spheres with minimal external field perturbation. The results indicate that hollow spheres with anisotropic susceptibility could form the basis of useful tunable contrast agents.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.