Abstract
Birdcage coils are used to generate radiofrequency (RF) pulses for magnetic resonance imaging (MRI) because of their capability to produce a highly homogeneous B1-field over a large volume within the coil. The interaction between the electromagnetic (EM) field and the biological object to be imaged deteriorates the B1-field homogeneity when the birdcage coils are used for high frequency MRI. The EM field interaction and the specific energy absorption rate (SAR) are computed using finite-difference time-domain (FDTD) method. The FDTD method can model the complex anatomical structure of the human head, the currents in the MRI coil, and the RF shield.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1210-1213 |
| Number of pages | 4 |
| Journal | IEEE Antennas and Propagation Society, AP-S International Symposium (Digest) |
| Volume | 2 |
| State | Published - 1997 |
| Event | Proceedings of the 1997 IEEE Antennas and Propagation Society International Symposium. Part 1 (of 4) - Montreal, Can Duration: Jul 13 1997 → Jul 18 1997 |
ASJC Scopus subject areas
- Electrical and Electronic Engineering