Angiosarcoma of the Scalp and Face: A Dosimetric Comparison of HDR Surface Applicator Brachytherapy and VMAT

Table 1

Dosimetric comparison of HDR-SA brachytherapy and VMAT for organs at risk.

	n^a	Median brachy^b	Median VMAT^c	value
Brain Dmax	12	43 Gy	37.5 Gy	0.021
Brain V50% (25.5 Gy)	12	194.0 cc	6.1 cc	<0.001
Brain V80% (40 Gy)	12	1.3 cc	0.0 cc	0.002
Mean lacrimal gland	23	14.2 Gy	2.9 Gy	0.007
Mean orbit	23	14.5 Gy	2.8 Gy	0.004
Mean lens	23	12.3 Gy	2.4 Gy	0.014
Mean cochlea	22	10.6 Gy	3.4 Gy	<0.001
Mean parotid	18	16.9 Gy	4.3 Gy	0.989

Key: ^an: number, ^bbrachy: brachytherapy, ^cVMAT: volumetric-modulated arc therapy.