20 / 1694
With the exception of a few early studies:
•
Marks et al 1976
•
Daily films for Hodgkin Lymphoma
patients
•
Comfortable immobilization is a must
(or 16% error incidence)
•
Errors can be due to (1) movement of
the patient and (2) movement of
external land- marks in relation to
internal anatomy.
•
Stopped using films after the study !
•
“Perhaps, daily treatment films
should be required in cases in which a
precise treatment setup is necessary”