表 2.

比较使用Autocal校准MLC叶片到位精度前后3种验证方式结果

Comparison of 3 dose verification methods before and after MLC calibration using Autocal software (Mean±SD)

Autocal time	Mapcheck			Arccheck			3DVH
	3%/3 mm	2%/2 mm		3%/3 mm	2%/2 mm		3%/3 mm	2%/2 mm
P1: Mapcheck (After autocal) vs Arccheck (After autocal); P2: Arccheck (After autocal) vs 3DVH (After autocal); P3: 3DVH (After autocal) vs Mapcheck (After autocal).
Before autocal	88.80±1.81	85.05±1.90		87.61±1.98	83.78±2.05		89.87±2.28	86.61±2.42
After autocal	99.25±0.53	95.81±0.69		98.13±0.99	94.25±1.05		98.30±1.15	94.30±1.12
P	0.001	0.005		0.003	0.002		0.002	0.001
P1	0.021	0.032		-	-		-	-
P2	-	-		0.011	0.028		-	-
P3	-	-		-	-		0.008	0.015