Assertion: secondary collimator | /r/HasProperty | positioned after a scattering foil
Facets:
value: for electron therapy
type: PURPOSE
Source sentences:
text: The secondary collimator is positioned after either a flattening filter (for photon therapy) or a scattering foil (for electron therapy).
text: The secondary collimator is positioned after either a flattening filter (for photon therapy) or a scattering foil (for electron therapy).