Keywords: New Devices, New Devices, Metamaterials
Motivation: High permittivity metamaterials have shown benefits in UHF MRI. However, precise dielectric constant measurement method for metamaterials is in absence, which may lead to bias in field manipulation.
Goal(s): Developing a precise measurement method to better mimicking dielectric materials’ role in field manipulation, where samples are placed at the reactive near-field region.
Approach: A microstrip line resonator was used to measure resonances of metamaterials. The resonance of dielectric materials with particular properties were chosen as the reference. Their difference in resonance frequency is required to be minimized.
Results: Metamaterials designed using our approach exhibited superior accuracy in mimicking the target dielectric pad.
Impact: The proposed method leads to better mimicking dielectric materials’ role in field manipulation at reactive near region. Metamaterials designed with this method exhibit enhanced B1 field and lower SAR, signifying a significant advancement in UHF MRI and promising precise diagnoses.
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