712 / 1694
By using the patient’s breathing trace (from an
external surrogate) and a 4D phantom, are you
checking…?
A. Which dose the tumour will
actually receive over the whole
treatment course
B. Whether the patient’s breathing
is similar to what you expected
from your 4DCT
C. Whether all the technical
parameters (alignment of the
imaging system, etc…) are
within constraints
D. All of the above