In this abstract we propose a new antenna design
as a transmit array element for proton head imaging at 7T that combines a small
feeding dipole that is capacitively coupled, as a so-called ‘indirect’ or
‘passive’ feed, to an ‘Egyptian’ axe dipole. B1+ and SAR
efficiency of the proposed antenna have been compared numerically with a
conventional dipole antenna of the same length. A head array consisting of eight
antenna elements has been constructed and tested. This array element offers a
large reduction in SAR compared to equally sized linear dipoles while
maintaining their B1+ profile as well as reducing the
impact of antenna loading on the resonance frequency.
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