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EJNMMI Physics
Fig. 7 | EJNMMI Physics

Fig. 7

From: Impacts of acquisition and reconstruction parameters on the absolute technetium quantification of the cadmium–zinc–telluride-based SPECT/CT system: a phantom study

Fig. 7

RCs under different acquisition time. a 32:1 T/B ratio; b 16:1 T/B ratio; c 8:1 T/B ratio; d 4:1 T/B ratio; X-axis indicates different spheres grouped by size; Y-axis indicates RCs; RCs of each sphere were calculated with 5–120 s/frame of acquisition time (from left to right). P values were calculated by using the paired t-test. Fixed reconstruction parameters: 35 iterations, 20 subsets, no filter, AC + SC + RR combination; Fixed acquisition parameters: 15% energy window

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