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Table 2 Linear regression coefficients of each reconstructed image from the different contrast agent mixtures and of the only individual contrast agent solutions

From: Multicolour imaging with spectral photon-counting CT: a phantom study

Image

Mixed gold and gadolinium

Mixed iodine and gadolinium

Gold only

Gadolinium only

Iodine only

Gold

Gadolinium

Iodine

Gadolinium

Gold

Gadolinium

Iodine

Slope

0.90

0.81

0.95

0.81

0.97

0.98

1.04

Offset

-0.68

0.89

-0.06

0.88

0.04

-0.13

0.22

R2

0.98

0.98

0.99

0.98

0.99

0.98

0.99

RMSE

0.47

0.42

0.13

0.35

0.28

0.35

0.26

95% CI

0.83–1

0.86–1.1

0.96–1

0.77–1

0.9–0.97

0.82–1

0.99–1

  1. RMSE root mean square error, CI confidence interval