Table 1.

Comparison of average errors in model simulations between the present method (QURT) and other conventional ones.

Method		QURT	SIRT	FBP
Tilt-angle
Range	Step
± 90°	2°	0.00330	0.0133	0.0409
	10°	0.0116	0.0568	0.129
± 70°	2°	0.0134	0.0769	0.104
	10°	0.0189	0.0895	0.166
± 50°	2°	0.0373	0.108	0.185
	10°	0.0381	0.114	0.249