Patient 3D Model
Photo Credit: Fred W. Baker III
To gather movement data, reflective markers are placed at key points on a patient, including legs, arms and hips. Encircling the room are eight specialized cameras with light-emitting diodes, known as LEDs, that flash at 120 times per second and record in true three-dimensional volume reflections of the markers in various positions as the patient walks. The angle and position of every joint -- ankles, hips, arms, pelvis, etc. -- is recorded in real time and expressed as stick-figure renditions of the patient walking.
Page last updated Tue August 16th, 2011 at 00:00