Keywords: Safety, Safety, Electroencephalography (EEG)
Motivation: Imperfections of B0-field can reduce the MR image quality. To track the B0 change during imaging, NMR field-probes inside the RF coil can be used. Insertion of the field-probes may lead to alteration of the B1+ and pSAR.
Goal(s): To evaluate alterations of B1+ field and pSAR of the 16-channel Tx-array in the presence of NMR field-probes at 9.4T.
Approach: To reach the goal, we simulated the Tx-part of the 16Tx32Rx array loaded by a phantom and human voxel model in the presence of 11 field-probes.
Results: Insertion of field-probes led to a small drop of B1+ and a slight change of pSAR.
Impact: We showed that inserting field-probes doesn’t significantly alter the B1+ field and pSAR of the 16Tx32Rx array coil at 9.4T. Therefore, field-probes can be safely used in-vivo to evaluate B0.
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