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CT snapshot and mobility
•
Try to obtain the data from your own patient population, using
your own technology and workflows!
•
If this is not practical, refer to relevant literature.
•
Example mobility oesophagus:
Welch
et al.
(Gastroentrology 1982), Dieleman
et al.
(IJROBP 2007)
Amplitude (mm)
SD (mm)
Upper & mid 1/3 GEJ Upper & mid 1/3 GEJ
Welch
4
1
6
2
Snapshot CT: Σ = 0.33*amplitude = 0.33*4 = 1.32 mm
Intrafraction organ mobility: σ = 1.00
The PTV 2017 - D. Verellen
Dieleman
3
1
4
1