Table 2.

In-house (PETTRA) and commercial software (Hermes) show strong correlation and close limits of agreement (LoA) for measuring MTV using the 2.5 method. The three different methods using Hermes software also show strong correlation and LoA with one another, with the highest agreement observed between the 2.5 and PERCIST methods

	Intraclass coefficient (ICC)	Kendall’s tau	Median difference	Lower LoA	Upper LoA
PETTRA 2.5 vs. Hermes 2.5	0.99 *	0.95 *	0.03	−72.5	240.7
Hermes 2.5 vs. Hermes PERCIST	0.98 *	0.89 *	27.32	−2081.8	595.5
Hermes 2.5 vs. Hermes 41%	0.86 *	0.72 *	305.72	2.2	3770.2
Hermes PERCIST vs. Hermes 41%	0.83 *	0.73 *	246.38	−2.5	6081.3

*p < 0.001