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EJNMMI Research
Fig. 3 | EJNMMI Research

Fig. 3

From: Ra-223 SPECT for semi-quantitative analysis in comparison with Tc-99m HMDP SPECT: phantom study and initial clinical experience

Fig. 3

a–d Comparison of SPECT image quality of the cylindrical phantom between the energy window settings of 84 keV ± 20% and 84 keV ± 10%. SPECT counts in hot rod (Hr) and background (BKG), and the standard deviation of BKG (SD) were measured. CNR and HBR are defined in the text. MEGP medium-energy general purpose, HEGP high-energy general purpose, CNR contrast-to-noise ratio, HBR hot rod-to-background ratio

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