Final answer:
A "multifield" image intensifier refers to the modes of magnification. In an Anger or gamma camera, the lead collimator and an array of detectors are used to produce light flashes in the scintillators. The overall magnification of a multiple-element system is the product of the individual magnifications of its elements.
Step-by-step explanation:
A "multifield" image intensifier refers to the modes of magnification. In an Anger or gamma camera, the lead collimator and an array of detectors are used to produce light flashes in the scintillators. The light output is converted to an electrical signal by the photomultipliers, and a computer constructs an image from the detector output. The overall magnification of a multiple-element system is the product of the individual magnifications of its elements.