Abstract #2627

Continuous monitoring of MRI staff exposure to stray magnetic field at 1.5 T and 3 T

Angelo Galante^1,2,3, Valentino Vito³, Elia Braggio⁴, Roberta Milanesi⁴, Vincenzo Giugno⁵, and Marcello Alecci^1,2,3

¹Consiglio Nazionale Ricerche - Istituto SPIN, L'Aquila, Italy, ²Istituto Nazionale Fisica Nucleare - Laboratori Nazionali del Gran Sasso, L'Aquila, Italy, ³Università dell'Aquila, L'Aquila, Italy, ⁴Tecnorad SrL, Verona, Italy, ⁵Azienda Sanitaria Locale 1 - Abruzzo, L'Aquila, Italy

Synopsis

We show how to monitor the MRI staff exposure to the $$$B_0$$$ stray-field. Monitoring is extended to several body districts without interferences with normal hospital operative procedures. The Weighted Peak index is calculated, for different Action Levels limits as from the current EU regulations, to consider the non-sinusoidal nature of exposure. Results show that exposure limits are exceeded even at 1.5 T and their occurrences significantly increase at 3.0 T scanners.

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