2.

施源器处理后不同配准框大小对配准精度的影响

Effect of different sizes of the registration region on registration precision after removing the applicators

Structures	Regions	DSC	S vs M	S vs L	M vs L
	S	0.699±0.104	t=0.780, P=0.448	t=2.237, P=0.042	t=2.671, P=0.018
HRCTV	M	0.689±0.125
	L	0.647±0.142
	S	0.777±0.090
IRCTV	M	0.747±0.096	t=2.843, P=0.013	t=3.915, P=0.002	t=3.521, P=0.003
	L	0.703±0.123
	S	0.686±0.213
Bladder	M	0.755±0.214	t=-4.058, P=0.001	t=-2.869, P=0.012	t=3.699, P=0.002
	L	0.724±0.208
	S	0.621±0.190
Rectum	M	0.679±0.156	t=-3.588, P=0.003	t=1.044, P=0.314	t=4.71, P=0.000
	L	0.598±0.186