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Fig. 4 | EJNMMI Research

Fig. 4

From: Clinical evaluation of [123I]FP-CIT SPECT scans on the novel brain-dedicated InSPira HD SPECT system: a head-to-head comparison

Fig. 4

Scatterplot of [123I]FP-CIT binding ratios in the caudate nucleus and putamen on the InSPira and NeuroFocus system in patient data. a Scatterplot of specific to non-specific [123I]FP-CIT binding ratios in the caudate nucleus and putamen of data obtained on the InSPira (y-axis) and NeuroFocus (x-axis) system for the human study. b Bland-Altman plot with mean ratios for the two systems on the x-axis and the differences between the two systems on the y-axis (subtracting InSPira from NeuroFocus ratios). The values exceeding 1.96 SD difference (for that ROI) are displayed in red. One value exceeded our pre-defined limits of agreement (1.96 SD difference). This was right putamen ratio for a subject whose [123I]FP-CIT SPECT scan was visually rated as abnormal (PD-like) on both systems

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