899 / 1840
Iridium 192 alone
at 5 years
Mobile tongue and floor of mouth
Intersource spacing
local fail. necrosis
9-14 mm (204 pts)
14 % 33 %
15-20 mm (70 pts)
24 % 44 %
70
p=0.13 p=0.04
J.M. Simon et al, Radiother. Oncol. 26, 19, 1993