Radiation Oncology

Table 1 Correlation between the whole respiratory cycle target motion/volume and PTV and IPSL parameters

From: Correlation between target motion and the dosimetric variance of breast and organ at risk during whole breast radiotherapy using 4DCT

		PTV			IPSL
		D_mean	HI	CI	V₅	V₁₀	V₂₀	V₃₀	V₄₀	V₅₀	D_mean
LR	r	−0.471	0.289	0.085	0.607	0.453	0.297	0.161	0.125	0.067	−0.307
LR	P	0.170	0.419	0.814	0.062	0.188	0.405	0.656	0.731	0.854	0.301
AP	r	−0.855	0.594	−0.820	−0.099	−0.653	−0.857	−0.897	−0.951	−0.975	0.798
AP	P	0.002	0.070	0.003	0.786	0.041	0.002	0.000	0.000	0.000	0.006
SI	r	0.693	−0.545	0.791	0.086	0.575	0.752	0.777	0.862	0.884	0.804
SI	P	0.026	0.104	0.006	0.812	0.082	0.012	0.008	0.001	0.001	0.005
Vector	r	−0.651	0.518	−0.846	−0.161	−0.651	−0.808	−0.824	−0.891	−0.905	−0.779
Vector	P	0.041	0.125	0.002	0.657	0.042	0.005	0.003	0.001	0.000	0.008
volume	r	−0.200	0.250	0.316	0.459	0.455	0.416	0.346	0.352	0.354	0.480
volume	P	0.579	0.485	0.374	0.182	0.186	0.232	0.327	0.319	0.315	0.161

Abbreviations: PTV planning target volume; IPSL ipsilateral lung; LR lateral; AP anteroposterior; SI superoinferior; V_x volume receiving more than x Gy; D_mean the mean dose.

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ISSN: 1748-717X

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