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

fYear

2010

fDate

Aug. 31 2010-Sept. 4 2010

Firstpage

5673

Lastpage

5676

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Engineering in Medicine and Biology Society (EMBC), 2010 Annual International Conference of the IEEE

Conference_Location

Buenos Aires

ISSN

1557-170X

Print_ISBN

978-1-4244-4123-5

Type

conf

DOI

10.1109/IEMBS.2010.5627894

Filename

5627894