Experiments and Analysis of Virtual Observation Points at 7T

PTX excitation may create distinct hot spots inside the human body by constructive interference of electric fields generated by the respective coil elements driven with individual amplitudes and phases. Monitoring global and local peak SAR is a challenging task. In this study, the system global power and the local SAR from Virtual Observation Points (VOP) model in conjunction with rigorous RF modeling that incorporates coupling are demonstrated and verified in-vivo by experiments acquired using the Parallel RF transmission system. The input simulated SAR model is also verified quantitatively using B1+ maps as well as local VOP SAR monitoring.

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.