Abstract #1860
Correlation of improved local SAR deposition with reduced shading close to hip implants
Thomas Lottner 1,2 , Mathias Nittka 1 , Theresa Bachschmidt 1,3 , Heiko Meyer 1 , and Wolfgang Nitz 1,2
1
Siemens Healthcare, Erlangen, Germany,
2
University
of Regensburg, Regensburg, Germany,
3
Experimental
Physics 5, University of Wrzburg, Wrzburg, Germany
Changing the B1 polarization has shown to reduce
artifacts due to induced currents in metallic implants.
The presented work aims to show that the right
elliptical polarization not just improves image quality,
but furthermore decrease the SAR value near the implant.
Numerical simulations were performed on a human male
with a simplified implant model placed in his right
femoral bone. The optimal polarization was approximated
by an analytical model. The optimized and the circular
polarization were compared and a significant increase of
B1 homogeneity and decrease in local SAR was shown for
the elliptical polarization.
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.
