Abstract #4066

Optimized High-Permittivity Pads Can Reduce SAR and Increase Transmit Field Homogeneity in Fetal Imaging at 3T

Jeroen van Gemert¹, Wyger Brink², Rob Remis¹, and Andrew Webb²

¹Circuits and Systems Group, Delft University of Technology, Delft, Netherlands, ²C.J. Gorter Center for High-Field MRI, Leiden University Medical Center, Leiden, Netherlands

One of the main concerns in fetal MRI is the amount of power that is deposited both in the fetus and the mother. In this work, we show that a well-designed high-permittivity pad can tailor the energy of the RF field such that the transmit efficiency increases and the field becomes more homogeneous. The increase in transmit efficiency subsequently enables a substantial reduction in the SAR in both the mother and the fetus for models of the third, seventh, and ninth months of gestation.

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.