Fig. 1
From: Dual energy window imaging for optimisation of P/V ratios in VP SPECT
Final linear regression of perfusion count rate normalised to 1 MBq of administered [99mTc]Tc-MAA, and a camera-collimator sensitivity of 1 cps/MBq (PCRnorm) as a function of the dual energy window count ratio of the ventilation study (Eratio). Regression line (blue solid line), 95% confidence band (dark grey), and 95% prediction bands (red dashed lines). Image generated in RStudio