Assertion: collimator | /r/MadeOf | tungsten
Facets:
value: most commonly
type: DEGREE
Source sentences:
text: A collimator in this instance is most commonly made of tungsten, and is rated according to how many half value layers it contains, i.e., how many times it reduces undesirable radiation by half.
text: A collimator in this instance is most commonly made of tungsten, and is rated according to how many half value layers it contains, i.e., how many times it reduces undesirable radiation by half.