Table 3.

[18F] FGD-PET/CT parameters related to clinical variables

Variables	cT stage Mean ± SD		TRG Mean ± SD		TRG Mean ± SD
	cT3	cT4	TRG1	TRG2–5	TRG1–2	TRG3–5
SUVmax	21.6 ± 9.3	28.9 ±9.8	22.9 ±9.9	21.7 ±8.8	22.9 ±8.9	21.7 ± 10
	p = 0.01		p = 0.68		p = 0.75
SUVmean	12.6 ± 5.5	16.6 ± 5.7	13.3 ± 5.9	12.5 ± 4.9	13.5 ± 5.4	13.3 ± 5.9
	p = 0.01		p = 0.68		p = 0.6
MTV	18.0 ± 13.2	41.0 ± 43.2	22.4 ± 23.3	16.7 ± 11.7	14.8 ± 10.3	24.4 ± 24.9
	p = 0.003		p = 0.21		p = 0.01
TLG	221.1 ±  172.6	833.5 ± 1053.0	330.1 ± 515.4	222.9 ± 200.8	210.6 ± 183.9	358.9 ± 560
	p = 0.0004		p = 0.23		p = 0.08

T Tumor stage, TRG Tumor regression grade, SD Standard deviation, SUVmax Maximum standardized uptake value, SUVmean Mean standardized uptake value, MTV Metabolic tumor volume, TLG Total lesion glycolysis, p p- value calculated with Student T-test