Keywords: Low-Field MRI, New Devices, Feild mapping robot
Motivation: Measurement of parameters like magnetic field and temperature inside a magnet bore is of interest at all MR magnetic field strengths to characterize the system and use that information for downstream image quality improvement or to determine safety thresholds.
Goal(s): Build and test a simple 3D movement robot.
Approach: we design, build and test a simple 3D movement robot with a sensor holder as a standalone system using a Raspberry Pi and a 16 channel ADC hat.
Results: The robot is capable of sub-millimeter measurements. We demonstrate the 3D field mapping of a 50mT scanner as an example use of the robot.
Impact: We designed and built a $2000 3D field mapping robot to map a very low field scanner’s magnet. The system is standalone exploiting Raspberry Pi’s system on a chip architecture and is scalable to include 16 analog inputs (sensors).
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