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EJNMMI Physics
Fig. 4 | EJNMMI Physics

Fig. 4

From: Comments on the NEMA NU 4-2008 Standard on Performance Measurement of Small Animal Positron Emission Tomographs

Fig. 4

Evaluation of spatial resolution using a Derenzo phantom. a Reconstruction of Derenzo phantom scan. The labels indicate the diameters and the distance between the rods. The red lines show an example of profile lines which would be used for determination of valley-to-peak ratios to evaluate the spatial resolution. b Distribution of valley-to-peak ratios for the region with a rod distance of 0.9 mm. All ratios are below 0.735, which is marked with a red vertical line

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