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. Author manuscript; available in PMC: 2019 Jul 27.
Published in final edited form as: Phys Med Biol. 2018 Jul 27;63(15):155013. doi: 10.1088/1361-6560/aacec3

Fig. 3.

Fig. 3.

NEMA NU-4 sensitivity measurements: The NEMA recommended point source was centered within the transverse FOV and stepped axially in 1 mm step. A peak absolute sensitivity of 12.4% is measured when using a 255 – 765 keV energy window.