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Hidden-target test on anthropomorphic phantom, pelvic region
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-EPID images (0.2mm pixels)
-Automatic detection of field
outline (Hough transform)
and BB (Kernel based)
-Detection estimated accuracy 0.1 mm
iso
2mm BB in isocenter
Plan 30x30mm open fields
Phantom positionning
kV planar, kV CBCT
imaging
Treatment plan delivery
EPID Image
analysis
Image guidance accuracy