The DOI matches its Crossref record; 10 of the 10 references it cites were found in a registry or an index.
SAR and B1 field distributions in a heterogeneous human head model within a birdcage coil
Abstract
Calculations of radiofrequency magnetic (B 1) field and specific energy absorption rate (SAR) distributions in a sphere of tissue and a multi‐tissue human head model in a 12‐element birdcage coil are presented. The coil model is driven in linear and quadrature modes at 63, 175, 200, and 300 MHz. Plots of B, field magnitude and SAR distributions, average SAR, maximum local SAR, and measures of B 1 field homogeneity and signal‐to‐noise ratio are given. SAR levels for arbitrary pulse sequences can be estimated from the calculated data. Maximum local SAR levels are lower at lower frequencies, in quadrature rather than in linear coils, and in linear fields oriented posterior‐to‐anterior rather than left‐to‐right in the head. It should be possible to perform many experiments in the head at frequencies up to 300 MHz without exceeding standard limits for local or average SAR levels.
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Cites
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Comparison of linear and circular polarization for magnetic resonance imaging
Glover, G. H., Hayes, C. E., Pelc, N. J., Edelstein, W. A., Mueller, O. M., Hart, H. R., Hardy, C. J., O'Donnell, M., & Barber, W. D. (1985) · Journal of Magnetic Resonance (1969) · doi:10.1016/0022-2364(85)90349-x · Cited by 265
Estimating radiofrequency power deposition in body NMR imaging
Bottomley, P. A., Redington, R. W., Edelstein, W. A., & Schenck, J. F. (1985) · Magnetic Resonance in Medicine · doi:10.1002/mrm.1910020404 · Cited by 171
Hornak, J. P., Szumowski, J., & Bryant, R. G. (1988) · Magnetic Resonance in Medicine · doi:10.1002/mrm.1910060204 · Cited by 104
On the SAR and field inhomogeneity of birdcage coils loaded with the human head
Jin, J., & Chen, J. (1997) · Magnetic Resonance in Medicine · doi:10.1002/mrm.1910380615 · Cited by 92
Šimunić, D., Wach, P., Renhart, W., & Stollberger, R. (1996) · IEEE Transactions on Biomedical Engineering · doi:10.1109/10.477704 · Cited by 84
Homogeneous Tissue Model Estimates of RF Power Deposition in Human NMR Studies
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Cited by
7T vs. 4T: RF power, homogeneity, and signal-to-noise comparison in head images
Vaughan, J. T., Garwood, M., Collins, C. M., Liu, W., DelaBarre, L., Adriany, G., Andersen, P., Merkle, H., Goebel, R., Smith, M. B., et al. (2001) · Magnetic Resonance in Medicine · doi:10.1002/mrm.1156 · Cited by 890
Self-citation9.4T human MRI: Preliminary results
Vaughan, T., DelaBarre, L., Snyder, C., Tian, J., Akgun, C., Shrivastava, D., Liu, W., Olson, C., Adriany, G., Strupp, J., et al. (2006) · Magnetic Resonance in Medicine · doi:10.1002/mrm.21073 · Cited by 317
State of the art direct 13 C and indirect 1 H‐[ 13 C] NMR spectroscopy in vivo . A practical guide
de Graaf, R. A., Rothman, D. L., & Behar, K. L. (2011) · NMR in Biomedicine · doi:10.1002/nbm.1761 · Cited by 117
Metadata
- Authors
- Collins, C. M., Li, S., & Smith, M. B.
- Venue
- Magnetic Resonance in Medicine
- Publisher
- Wiley
- Published
- 1998-12
- Volume
- 40
- Issue
- 6
- Pages
- 847-856
- ISSN
- 0740-3194 (ISSN-L)
- 1522-2594
- OpenAlex
- W2008958501
- Cited by
- 272
- References
- 10
- FWCI
- 7.27
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: SAR and B1 field distributions in a heterogeneous human head model within a birdcage coil. https://app.cochat.ai/papers/10.1002/mrm.1910400610
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- Collins, C. M., Li, S., & Smith, M. B. (1998). SAR and B1 field distributions in a heterogeneous human head model within a birdcage coil. Magnetic Resonance in Medicine. https://doi.org/10.1002/mrm.1910400610
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
