Table 3.

Change in HUs with respect to radiation dose groups.

	<20 Gy		20 – 40 Gy		>40 Gy
	Mean	P	Mean	P	Mean	P
T12-HUpre	160.6 ± 48.6	0.09	158.4 ± 39.5	<0.001	159.7 ± 44.8	<0.001
T12-HUpost	145.4 ± 44.1		109.1 ± 45.9		93.2 ± 30.9
L1 – HUpre	159.2 ± 46.8	0.06	158.8 ± 44.6	<0.001	158.5 ± 40.4	<0.001
L1 – HUpost	150.7 ± 50.7		108.3 ± 42.9		92.5 ± 29.3
L2 – HUpre	156 ± 43	0.03	156.8 ± 38.6	<0.001	157 ± 44.7	<0.001
L2 – HUpost	148.9 ± 44.6		108.8 ± 44.9		93.5 ± 29.2