TABLE 2

Comparison of ¹¹C-AMT PET–Derived Parameters Between Recurrent Tumor and Radiation Injury Groups

	All patients			Patients with histology after PET (n = 13)
¹¹C-AMT PET parameter	Tumor	Radiation injury	P	Tumor	Radiation injury	P
Lesion SUV	2.68 ± 1.05	1.71 ± 0.48	0.014	2.73 ± 1.21	1.97 ± 0.42	0.26
Lesion-to-cortex SUV ratio	2.14 ± 0.68	1.22 ± 0.26	0.001	2.32 ± 0.69	1.45 ± 0.06	0.034
Lesion VD	0.79 ± 0.40	0.41 ± 0.18	0.012	0.82 ± 0.43	0.56 ± 0.19	0.28
Lesion-to-cortex VD ratio	3.33 ± 1.58	1.58 ± 0.66	0.004	3.22 ± 1.39	2.28 ± 0.24	0.21
Lesion K (mL/g/min)	0.012 ± 0.004	0.006 ± 0.002	0.002	0.012 ± 0.005	0.008 ± 0.001	0.10
Lesion-to-cortex K ratio	2.16 ± 0.55	1.18 ± 0.18	0.00003	2.28 ± 0.56	1.29 ± 0.14	0.006