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.