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Table 1 Planning parameters

From: Total Body Irradiation (TBI) using Helical Tomotherapy in children and young adults undergoing stem cell transplantation

Pt. no. Single dose Fractions Total dose Lung sparing y/n Pitch Pitch legs MF MF legs Field width t
1 2 6 12 y 0.43 / 1.5 / 5 1236 s (=20.6 min)
2 2 6 12 y 0.43 / 1.3 / 5 815 s (=13.6 min)
3 2 6 12 y 0.43 0.43 2.1 1.1 5 1812 s (=30.2 min)
4 2 6 12 y 0.3 0.43 2 1.3 5 1791 s (=29.9 min)
5 2 6 12 y 0.3 0.43 2 1.1 5 1851 s (=30.9 min)
6 2 6 12 y 0.45 / 1.22 / 5 916 s (=15.3 min)
7 2 6 12 y 0.35 0.4 2 1.1 5 1738 s (=29.0 min)
8 2 6 12 y 0.3 0.4 2 1.1 5 1723 s (=28.7 min)
9 2 6 12 y 0.3 0.4 2 1.1 5 1649 s (=27.5 min)
10 2 6 12 y 0.4 0.4 2 2 5 2374 s (=39.6 min)
  1. All patients were treated with single doses of 2 Gy applied twice a day with an interfraction interval of at least eight hours on three consecutive days to a total dose of 12 Gy with lung sparing to a Dmean of 10 Gy and a Dmin of 8 Gy. Pitch values of 0.3-0.45 and modulation factors (MF) of 1.1-2.1 were used. Field width of 5 cm.