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Abstract #2624

Evaluation of a thermal dose based safety concept for 7T pTx coils

Frank Seifert1 and Bernd Ittermann1

1Physikalisch-Technische Bundesanstalt (PTB), Braunschweig und Berlin, Germany

We propose a straightforward procedure to calculate thermal dose values (CEM43) from upper limit values of tissue temperatures utilizing T-matrix formalism. The procedure is evaluated for a 7T 8-channel transmit/receive (pTx) head coil using the RF power data of a long duration neuroscience MR session and a scenario when heating of eye tissue is worst. The proposed approach, as a generalization of the thermal dose concept for body coils, is capable to determine reliably the risk of excessive tissue heating when using pTx coils.

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