668 / 1816
Example: 2D imaging for APBI
3
gold
markers (1.2 x 3mm)
AP kV, lateral MV daily + MV acquisition (open fields)
1cm PTV
No evidence of migration
Average shifts:
- 3mm AP
- 2mm LR
- 2mm sup inf
But displacements of up to 10 mm observed
03/01/13
Leonard et al IJROBP 2010