The aim of this study was to investigate the crossed-dipole antenna by means of electromagnetic simulations and compare it with the surface quadrature head loop and volume head coils in terms of B1+ efficiency for 7T human brain imaging. The crossed-dipole antenna consists of two dipoles placed in a crossed form mounted upon/in an one-side conductor shielded dielectric. This antenna excites the circularly-polarized field and enhances the transmit efficiency in the occipital lobe in a larger FOV compared to the conventional coils. The comparison of the simulated B1+ maps of the coils showed that it is feasible to build it.
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.
Keywords