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Langen et al. IJROBP 70:1272-80. 2008
APBI with helical Tomotherapy
- two plans for 10 patients (standard helical and
fixed beam (topotherapy
))
- NSABP B-39/RTOG 0413 guidelines for target coverage and normal tissue dosimetry
Helical
Topotherapy
Target
V100 (%)
95
95
Uninvolved ipsilat. breast
V50 (%)
30
40
Ipsilat. lung
V10Gy (%)
17
10
Heart (left sided)
V2Gy (%)
13
5
The
conformation
of the prescription dose to the target was greater for
helical deliveries
,
while the
ipsilateral lung and heart
dose were significantly reduced for the
topotherapy
plans.
Topotherapy beams