Referenced Items are not available for this document.
Specific absorption rate (SAR) and temperature increases produced inside a thorax model by an MRI apparatus equipped with a birdcage antenna operating at 64 MHz have been studied both experimentally and numerically. Considering a pacemaker (PM) equipped with a unipolar catheter inserted inside the thorax model, peak SARs averaged over 1 mg between 240 and 6400 W/kg, depending on the catheter section and length, on its position inside the phantom, and on field polarization have been obtained close to the catheter tip. On the other hand, the average SAR in the whole thorax is not influenced by the presence of the PM. Temperature increments from 0.6degC to 15degC have been obtained for 6-min MRI investigations with the lowest values when the radio-frequency (RF) magnetic field is linearly polarized along a direction perpendicular to the implant plane.
Published in:
Electromagnetic Compatibility, IEEE Transactions on
(Volume:50
,
Issue:
1
)
Date of Publication: Feb. 2008
- Page(s):
- 35 - 42
- ISSN :
- 0018-9375
- INSPEC Accession Number:
- 9799929
- Digital Object Identifier :
- 10.1109/TEMC.2007.915282
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 22 February 2008
- Issue Date :
- Feb. 2008
- Sponsored by :
- IEEE Electromagnetic Compatibility Society
About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies
A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2013 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.
