Estimating intrafraction tumor motion during fiducial-based liver stereotactic radiotherapy via an iterative closest point (ICP) algorithm

Table 3 Residual error with and without (w/o) rotational corrections. Statistical analysis was performed using paired sample t-test analysis

	Error w/o rotational correction	Error with rotational correction	p-value
	Mean ± SD	Mean ± SD	p-value
\|e^x\|(mm)	0.68 ± 0.26	0.31 ± 0.15	< 0.001
\|e^y\|(mm)	0.57 ± 0.21	0.39 ± 0.13	< 0.001
\|e^z\|(mm)	0.74 ± 0.31	0.39 ± 0.21	< 0.001
\|e^d\|(mm)	1.19 ± 0.36	0.65 ± 0.23	< 0.001

ISSN: 1748-717X