CPC G21K 1/04 (2013.01) [A61B 6/06 (2013.01)] | 14 Claims |
1. A collimator comprising:
an adjustable aperture size; and
a first pair of knobs configured to adjust the aperture size by manipulating one or both of the first pair of knobs;
wherein the first pair of knobs are each attached to opposite ends of a first shaft, and
wherein each of the first pair of knobs is configured to adjust a different dimension of the adjustable aperture.
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