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. Author manuscript; available in PMC: 2014 Apr 1.
Published in final edited form as: Nucl Med Biol. 2013 Feb 9;40(3):321–330. doi: 10.1016/j.nucmedbio.2012.12.003

Figure 4.

Figure 4

Corrected count rate vs. activity in the FOV for three different energy windows and the same cone angle. The source was a cylinder (2-cm diameter × 7.5-cm length) containing a uniform solution of 18F centered in the FOV. Numerical values assigned to each curve are the lower energy window settings. The upper level setting was fixed at 650 keV. Correction fails at approximately 14.8 MBq (400 μCi) of 18F in the field of view.