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EJNMMI Physics
Fig. 5 | EJNMMI Physics

Fig. 5

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. 5

Location of line profiles of 32:1 (a), 16:1 (b), 8:1 (c), and 4:1 (d) T/B ratios through the central slice of the entire phantom. X-axis indicates the pixel position of the phantom; Y-axis indicates the calculated mean uptake values of the phantom; The upper edges of both grey areas are the actual radioactivity concentration in spheres; Different curves were calculated mean uptake values by using different correction combinations (AC + SC + RR, AC + SC, and AC + RR); Fixed reconstruction parameters: 35 iterations, 20 subsets, no filter; Fixed acquisition parameters: 120 s/frame of acquisition time, 15% energy window

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