Abstract #0144

Measurement of Microscopic Head Motion During Brain Imaging

Julian Maclaren¹, Brian S. Armstrong², Robb T. Barrows², K. A. Danishad³, Thomas Ernst⁴, Colin L. Foster², Kazim Gumus⁴, Michael Herbst¹, Ilja Y. Kadashevich³, Todd P. Kusik², Qiaotian Li², Cris Lovell-Smith¹, Tom Prieto⁵, Peter Schulze³, Oliver Speck³, Daniel Stucht³, Maxim Zaitsev¹

¹Dept. of Radiology, University Medical Center, Freiburg, Germany; ²Electrical Engineering, University of Wisconsin-Milwaukee; ³Biomedical Magnetic Resonance, Otto-von-Guericke University, Magdeburg; ⁴Dept. of Medicine, University of Hawaii; ⁵Dept. of Neurology, Medical College of Wisconsin

This work describes the design, construction and testing of an MR-compatible in-bore camera capable of measuring head motion with a precision of around 10 micrometres. The system is used to quantify cardiac and breathing-related head motion in normal subjects during simultaneous MR imaging.