Detector size and construction
Perturbations due to construction
Ionization chambers
wall, central electrode, air cavity
Diodes
housing, shielding, sensitive volume
C. McKerracher, D.I. Thwaites /
Radiotherapy and Oncology 79 (2006) 348–351
Perturbations dependent on field size!
Crop
el al
(2009), PMB,54(9), 2951-2969, 2009