Abstract #1766

Feasibility of integrating a wearable accelerometer in very low-field MRI to detect motion

Keerthi Sravan Ravi^1,2, Kunal Aggarwal³, John Thomas Vaughan Jr.², Yun Soung Kim⁴, and Sairam Geethanath⁵

¹Biomedical Engineering, Columbia University, New York, NY, United States, ²Columbia Magnetic Resonance Research Center, Columbia University, New York, NY, United States, ³Accessible MR Lab, BMEII, Diagnostic, molecular and interventional radiology, Icahn School of Medicine at Mt. Sinai, New York City, NY, United States, ⁴Biomedical Engineering and Imaging Institute, Dept. of Diagnostic, Molecular and Interventional Radiology,, Mt.Sinai, New York, NY, United States, ⁵Accessible MR Laboratory, Biomedical Engineering and Imaging Institute, Dept. of Diagnostic, Molecular and Interventional Radiology,, Mt. Sinai, New York, NY, United States

Synopsis

Keywords: Low-Field MRI, Low-Field MRIThese artifacts degrade image quality, often causing misdiagnosis. A 6-axis motion tracking sensor (ICM-20649, TDK-InvenSense) with a full-scale range of +-4000 degrees per second for the gyroscope and +-30g for the accelerometer was integrated with a 50mT scanner. The sensor’s readings can successfully be processed to detect motion. However, it resulted in zipper artifacts and degraded image quality in a phantom experiment. Still, the sensor’s placement on the forehead or the temples or the chin might not significantly impact brain data when coupled with slab-wise shimming.

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