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EPI dosimetry
EPID can determine transmission
dose in the entire irradiation field,
and thus, the exit or midline dose in
a plane can be obtained.
Using this information, the dose
homogeity in the e.g. target volume
can be assessed.
M. Essers, et al. Int J Radiat
Oncol Biol Phys 34:931-41,
1996.