697 / 1694
ITV
• Straightforward (?)
• Physician time
(contouring)
• Coverage is ensured
• Larger volumes of lung
irradiated if large motion
• Needs an elaborate 4D
viewer?
MidVentilation
• Counterintuitive (?)
• Physicist time
(choice of
phase + margin calculation)
• Smaller lung volume
irradiated
• Requires special
software?
Do not delay the introduction/routine use of 4D-CT
because of this issue!