1383 / 1578
Conclusion
CT and 4DCT
▪
Expiration phases are more stable and give a better estimation of
the true GTV
▪
The average image overestimates the GTV volume around 35%
▪
Check the image quality at the end of inspiration
Dosimetry
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Good homogeneity in the beam output results
▪
Dose comparison at the center of the sphere seems not affected by
motion – Nonetheless over the central 2D plan measured by films
the dose agreement rate is lower for the dynamic plan
▪
Participating in external audits is useful
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