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Abstract #1759

Magnetic gradient mapping of a 3T MRI scanner using a modular array of novel three-axis Hall sensors

Joris Pascal1, Nicolas Weber2,3, Jacques Felblinger2,3, and Julien Oster2,3

1FHNW, University of Applied Sciences and Arts Northwestern Switzerland, Muttenz, Switzerland, 2U947, Inserm, Nancy, France, 3IADI, Université de Lorraine, Nancy, France

This paper presents a multi-point and modular magnetic field sensor system compatible with a 3T-MRI environment. The system features a three-axis magnetometer on a chip. This monolithic sensor is to our knowledge the only integrated sensor commercially available that provides full field vector information as well as sufficient dynamic range and acquisition rate for MRI-applications. We have validated experimentally our demonstrator through the measurement of static magnetic field and magnetic field gradients simultaneously acquired at nine locations within a MRI bore (Prisma, Siemens, Erlangen, Germany).

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