Title :
fMRI headtracking using a single camera and a lightweight fiducial
Author :
MacFarlane, Duncan L. ; Wildey, Chester R.
Author_Institution :
Electr. Eng. Dept., Univ. of Texas at Dallas, Richardson, TX, USA
fDate :
Aug. 31 2010-Sept. 4 2010
Abstract :
A single CCD/DSP camera based optical system affords six degree of freedom motion tracking for MRI applications with resolutions in the range of <;50 microradians and 10-100 microns. The fiducial target is a lightweight compact three dimensional pattern that allows efficient, centroid based algorithms to determine distance translation and angle rotation at rates of 30Hz. In-magnet tests measure the inherent magnet vibration as well as subject signatures such as those for respiration, speech, swallow and nod.
Keywords :
CCD image sensors; biomedical MRI; image motion analysis; medical image processing; pneumodynamics; speech; CCD camera; DSP camera; angle rotation; centroid based algorithms; distance translation; fMRI headtracking; frequency 30 Hz; lightweight fiducial; magnet vibration; motion tracking; nod; optical system; respiration; single camera; speech; swallow; Cameras; Head; Magnetic resonance imaging; Optical imaging; Protocols; Target tracking; Algorithms; Fiducial Markers; Head; Humans; Magnetic Resonance Imaging; Movement; Photography;
Conference_Titel :
Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE
Conference_Location :
Buenos Aires
Print_ISBN :
978-1-4244-4123-5
DOI :
10.1109/IEMBS.2010.5627894
