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Tumor tracking: DMLC
•
Advantages
:
!
Using the available dynamic MLC
!
Using a “work horse” linac
•
Drawbacks
:
!
Only useable with a flattened beam, what with FFF?
!
Tracking and DMLC intensity modulation are coupled:
coupled constraints and increased complexity with higher
modulation and higher velocities
!
Tracking perpendicular to MLC leaf tracks? Leaf leakage?
SBRT 2015 - D. Verellen
5
Static
Not-tracked
Tracked
MLC
“Using the MLC to track the tumour: breathing
leaves
”