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Abstract #1388

Detecting Respiratory Motion Using Accelerometer Sensors: Preliminary Insight

Eddy Solomon1,2, Syed Saad Siddiq1,2, Daniel K Sodickson1,2, Hersh Chandarana1,2, and Leeor Alon1,2
1Radiology, New York University School of Medicine, New York, NY, United States, 2New York University Grossman School of Medicine, New York, NY, United States

MRI scans are often under continues involuntary motion which weakens their reliability and diagnostic utility for examining the chest and abdomen. Acquisitions using traditional external sensors (e.g. respiratory belt) and self-gated techniques tend to be highly sensitive to patient position and setup, and on MR sequence parameters. Here, we demonstrate the use of accelerometer sensors for detecting respiratory signals. We show how the use of this simple sensor, with its relatively small dimensions, high sampling rate capability, and low cost, can produce motion corrected-images under free-breathing conditions.

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