EJNMMI Physics

Table 5 Comparison of the dosimetry outcomes

From: A head-to-head comparison between two commercial software packages for hybrid dosimetry after peptide receptor radionuclide therapy

			Kidneys	Red marrow	Tumour lesions
Mono-exponential	Absolute difference (Gy/GBq)	Bias	0.026 ± 0.12	0.047 ± 0.019	−0.37 ± 0.86
	Absolute difference (Gy/GBq)	95% LOA	−0.37 − 0.42	0.01 − 0.08	−2.05 − 1.31
	Relative difference (%)	Bias	−0.53 ± 29.03	116 ± 38.5	−8.36 ± 19.19
	Relative difference (%)	95% LOA	−57.4 − 56.4	41.0 − 192	−46.0 − 26.3
	Spearman correlation		0.903	−0.701	0.963
	ICC - agreement		0.708	Negative	0.804
Bi-exponential	Absolute difference (Gy/GBq)	Bias	−0.042 ± 0.16	0.088 ± 0.015	0.39 ± 0.92
	Absolute difference (Gy/GBq)	95% LOA	−0.348 − 0.265	0.057 − 0.118	−1.41 − 2.19
	Relative difference (%)	Bias	−5.63 ± 32.07	169 ± 12.8	−9.52 ± 26.66
	Relative difference (%)	95% LOA	−68.5 − 57.2	144 − 194	−42.7 − 61.8
	Spearman correlation		0.491	−0.418	0.907
	ICC - agreement		0.537	Negative	0.921

LOA limits of agreement, ICC intraclass correlation coefficient

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