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. 2004 Aug 5;64(2):239–245. doi: 10.1136/ard.2004.024224

Figure 2.

Figure 2

 Experimental setup for sagittal joint imaging. The laser is positioned above and a photodetector is placed below the finger joint to be examined. Both, detector and diode laser are attached to stepping motor driven translation stages that permit independent control of the position of the laser diode and photodetector relative to the joint. Detector and laser are connected to a personal computer, where data are collected.