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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Bernardi, P. Cavagnaro, M. Pisa, S. Piuzzi, E. |
| Copyright Year | 2009 |
| Description | Author affiliation: Dipartimento di Ingegneria Elettronica, Sapienza Università di Roma, Via Eudossiana 18, 00184 Roma, Italy (Bernardi, P.; Cavagnaro, M.; Pisa, S.; Piuzzi, E.) |
| Abstract | In this paper radiofrequency power absorption and temperature elevation in the thorax of a pacemaker (PM) holder exposed to the field generated by a 1.5 T (64 MHz) magnetic resonance imaging (MRI) apparatus have been numerically studied. A pacemaker model, constituted by a metallic box equipped with a catheter, has been inserted inside an anatomical body model that is placed inside the birdcage MRI antenna. The results obtained for an input power of 60 W (typical value for MRI examinations) show that SAR safety limits proposed in international guidelines are met, while temperature increments are well above the prescribed recommendations. In particular, by neglecting the blood perfusion, temperature increments up to 30 °C are computed at the catheter tip; these reduce to about 10 °C if a complete thermal model is considered, still remaining over safety limits. |
| Starting Page | 869 |
| Ending Page | 872 |
| File Size | 581754 |
| Page Count | 4 |
| File Format | |
| ISBN | 9781424433858 |
| DOI | 10.1109/ICEAA.2009.5297353 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2009-09-14 |
| Publisher Place | Italy |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Radio frequency Temperature Electromagnetic wave absorption Magnetic resonance imaging Pacemakers Thorax Safety Catheters Power generation Guidelines |
| Content Type | Text |
| Resource Type | Article |
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