Quantitative and clinical impact of MRI-based attenuation correction methods in [18F]FDG evaluation of dementia

EJNMMI Research

Table 3 The mean absolute difference (\( \overline{D_{abs}} \)) in z-score between PET_MRAC and PET_CT and the range of the difference (D), with pons and cerebellum as reference regions

MRAC method	\( \overline{D_{abs}} \) (σ) (pons) mean ± std	D (σ) (pons) [min max]	\( \overline{D_{abs}} \) (σ) (cerebellum) mean ± std	D (σ) (cerebellum) [min max]
PET_DeepUTE	0.19 ± 0.16	[− 0.43, 0.76]	0.15 ± 0.11	[− 0.60, 0.60]
PET_UCL	0.21 ± 0.15	[− 0.69, 0.47]	0.15 ± 0.12	[− 0.64, 0.44]
PET_DixonBone	0.48 ± 0.27	[− 1.52, 0.31]	0.23 ± 0.20	[− 1.14, 1.42]
PET_DixonNoBone	0.53 ± 0.35	[− 1.77, 0.74]	0.32 ± 0.28	[− 1.32, 1.67]
PET_UTE	1.13 ± 0.47	[− 2.85, − 0.02]	0.54 ± 0.40	[− 1.64, 2.49]