Video camera and light system for application in magnetic resonance scanners.
The direct observation and simultaneous recording of subject behavior, e.g. facial movements, during MR imaging is necessary for a variety of functional imaging studies involving phenomena such as emotions, humor, mood, etc. Such observation is also valuable for the monitoring of very ill or young patients. We describe a color video camera and light system which works within the functioning scanner. The camera acquires high resolution video sequences during conventional T(1)-weighted and functional T(2)*-weighted imaging. When fixed to the head coil artefacts during the MRI-acquisition were insignificant. The video allows observation of the face detailed enough to permit FACS scoring of facial expressions. We therefore propose that it can be applied for a wide variety of studies needing visual feedback of subject behavior.
Wild
B
B
Dept. of Psychiatry, University of Tübingen, Osianderstr.24, 72076, Tübingen, Germany. bawild@med.uni-tuebingen.de
Erb
M
M
Lemke
N
N
Scholz
P
P
Bartels
M
M
Grodd
W
W
D016477:Artifacts; D004867:Equipment Design; D005149:Facial Expression; D006801:Humans; D008027:Light; D008279:Magnetic Resonance Imaging / Q000295:instrumentation / Q000379:methods*; D012680:Sensitivity and Specificity; D014741:Video Recording / Q000295:instrumentation*