936 / 1195
Summary
Frequent soft-tissue imaging provides feedback & an
opportunity to adapt to changing conditions; to better
control the treatment process.
On-line correction is desirable, but may not be sufficient.
Dose accumulation (with deformable image registration) is
required for proper Tx assessment.
A logical direction for improving quality.
Adaptive schemes may permit PTV margin reduction, and
other opportunities to improve treatment:
Assure minimum target dose.
Spare more normal tissue volume.