Comparative dosimetric findings using accelerated partial breast irradiation across five catheter subtypes

Radiation Oncology

Table 6 The Effect of PTV on D₉₀, D₉₅, D_maxSkin, D_maxRib, V₁₅₀, and V₂₀₀

	Single-lumen		Multi-lumen		SAVI		SAVI 6-1 mini		Total
	(n = 34)		(n = 64)		(n = 243)		(n = 253)		(n = 594)
	r	p	r	p	r	p	r	p	r	p
PTV (cc) vs. D₉₀	.236	.180	.388*	.002	.072	.263	.335*	< .001	−.082*	.046
PTV (cc) vs D₉₅	.102	.565	.382*	.002	.129*	.044	.405*	< .001	.111*	.007
PTV (cc) vs D_maxSkin	−.153	.388	−.301*	.016	−.056	.384	−.350*	< .001	−.021	.603
PTV (cc) vs D_maxRib	−.217	.217	−.325*	.009	−.407*	< .001	−.297*	< .001	.020	.626
PTV (cc) vs V₁₅₀	.513*	.002	.547*	< .001	.808*	< .001	.826*	< .001	.783*	< .001
PTV (cc) vs V₂₀₀	−.332	.055	−.176	.163	.266*	< .001	.586*	< .001	−.125*	.002

Any relationship is demarcated with *. A strong relationship was defined as an r-value greater than 0.5 or less than −0.5 with p < .05. A weak relationship was defined as an r-value between 0.25 and 0.5 or −0.25 and −0.5 with p < .05

ISSN: 1748-717X