Numerical Calculations of SAR in a 3.0T High Field Whole-Body MRI Scanner
Abstract
Compared with commonly clinically used Magnetic Resonance Imaging (MRI) scanners in many hospitals, the newly developed 3.0 Tesla high field whole-body MRI scanners have many advantages because of their higher signal-to-noise-ratio (SNR) and the associated spatial resolution. It is particularly useful for brain related imaging and research. But these high magnetic field systems would also increase the possibility of excessive radiofrequency (RF) heating inside a patient. Thus limits on the specific absorption rate (SAR) are specified to regulate the RF energy deposited inside a patient. Here we present the use of Finite Difference Time Domain (FDTD) method to numerically calculate SAR inside a realistic human body model. The calculated result provides useful SAR information for the development of new imaging sequences used in these high field MRI scanners.
- Publication:
-
APS Ohio Sections Fall Meeting Abstracts
- Pub Date:
- October 2003
- Bibcode:
- 2003APS..OSF..P026Z