Predicting temperature increase through local SAR estimation by B1 mapping: A phantom validation at 7T

Xiaotong Zhang; Jiaen Liu; Sebastian Schmitter; Pierre-Francois Van de Moortele; Bin He

doi:10.1109/EMBC.2014.6943788

Predicting temperature increase through local SAR estimation by B1 mapping: A phantom validation at 7T

Xiaotong Zhang
, Jiaen Liu
, Sebastian Schmitter
, Pierre-Francois Van de Moortele
, Bin He

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

7 Scopus citations

Abstract

It has been shown that Electrical Properties d(EPs) of biological tissues can be derived from MR-based B1 measurement. A strong appeal for these 'Electrical Property Tomography' (EPT) methods is to estimate real-time and subject-specific local specific absorption rate (SAR) induced by RF transmission. In order to investigate the feasibility of EPT-based local SAR estimation, following previously proposed EPT protocols, induced local SAR has been firstly estimated under one B1 shim setting for a heating sequence at 7T; whereas with the same acquired B1 information, induced local SAR under a different B1 shim setting has been further predicted. Both of the SAR results have been compared to measured temperature changes using MRI Thermometry based on the proton chemical shift.

Original language	English (US)
Title of host publication	2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1107-1110
Number of pages	4
Volume	2014
ISBN (Electronic)	9781424479290
DOIs	https://doi.org/10.1109/EMBC.2014.6943788 https://doi.org/10.1109/EMBC.2014.6943788
State	Published - Jan 1 2014
Event	2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014 - Chicago, United States Duration: Aug 26 2014 → Aug 30 2014

Publication series

Name	Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISSN (Print)	1557-170X

Other

Other	2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014
Country/Territory	United States
City	Chicago
Period	8/26/14 → 8/30/14

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© 2014 IEEE.

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Zhang, X., Liu, J., Schmitter, S., Van de Moortele, P.-F., & He, B. (2014). Predicting temperature increase through local SAR estimation by B1 mapping: A phantom validation at 7T. In 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014 (Vol. 2014, pp. 1107-1110). Article 6943788 (Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EMBC.2014.6943788, https://doi.org/10.1109/EMBC.2014.6943788

Predicting temperature increase through local SAR estimation by B1 mapping: A phantom validation at 7T. / Zhang, Xiaotong; Liu, Jiaen; Schmitter, Sebastian et al.
2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014. Vol. 2014 Institute of Electrical and Electronics Engineers Inc., 2014. p. 1107-1110 6943788 (Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Zhang, X, Liu, J, Schmitter, S, Van de Moortele, P-F & He, B 2014, Predicting temperature increase through local SAR estimation by B1 mapping: A phantom validation at 7T. in 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014. vol. 2014, 6943788, Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, Institute of Electrical and Electronics Engineers Inc., pp. 1107-1110, 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014, Chicago, United States, 8/26/14. https://doi.org/10.1109/EMBC.2014.6943788, https://doi.org/10.1109/EMBC.2014.6943788

Zhang X, Liu J, Schmitter S, Van de Moortele PF, He B. Predicting temperature increase through local SAR estimation by B1 mapping: A phantom validation at 7T. In 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014. Vol. 2014. Institute of Electrical and Electronics Engineers Inc. 2014. p. 1107-1110. 6943788. (Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference). doi: 10.1109/EMBC.2014.6943788, 10.1109/EMBC.2014.6943788

Zhang, Xiaotong ; Liu, Jiaen ; Schmitter, Sebastian et al. / Predicting temperature increase through local SAR estimation by B1 mapping : A phantom validation at 7T. 2014 36th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBC 2014. Vol. 2014 Institute of Electrical and Electronics Engineers Inc., 2014. pp. 1107-1110 (Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference).

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abstract = "It has been shown that Electrical Properties d(EPs) of biological tissues can be derived from MR-based B1 measurement. A strong appeal for these 'Electrical Property Tomography' (EPT) methods is to estimate real-time and subject-specific local specific absorption rate (SAR) induced by RF transmission. In order to investigate the feasibility of EPT-based local SAR estimation, following previously proposed EPT protocols, induced local SAR has been firstly estimated under one B1 shim setting for a heating sequence at 7T; whereas with the same acquired B1 information, induced local SAR under a different B1 shim setting has been further predicted. Both of the SAR results have been compared to measured temperature changes using MRI Thermometry based on the proton chemical shift.",

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Predicting temperature increase through local SAR estimation by B1 mapping: A phantom validation at 7T

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