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Abstract #1460

Exposure Measurements on MR-Workers at the Stray Field of 1.5T, 3T, and 7T MR Systems

Jens Groebner1, Reiner Umathum2, Michael Bock2, Wolfhard Semmler2, Jaane Rauschenberg2

1Medical Physics in Radiology , German Cancer Research Center, Heidelberg, Germany; 2Medical Physics in Radiology, German Cancer Research Center, Heidelberg, Germany

Due to the insufficient experimental data on static magnetic field exposure and new ICNIRP limitations an exposure measurement instrument was developed. With the new probe actual B0 and time varying magnetic fields due to movement in the stray field can be detected simultaneously. Therefore, personal exposure of 10 healthcare workers and MR physicists during normal operating procedures could be determined. Peak exposure limits are exceeded during all procedures.