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. Author manuscript; available in PMC: 2016 Feb 7.
Published in final edited form as: Phys Med Biol. 2015 Jan 16;60(3):1325–1337. doi: 10.1088/0031-9155/60/3/1325

Table 2.

Correlation between camera 1 and camera 2.

Source System Count rate measurement Pearson coefficient
Disk source 1 ROI 0.2250
Entire FOV 0.4718
2 ROI 0.6581
Entire FOV 0.5091
3 ROI 0.4400
Entire FOV −0.1330
Small rod 3 ROI 0.1878
Entire FOV −0.1473
Large rod 3 ROI 0.0667
Entire FOV 0.2291