Question

16 multiple choice 1 point
in mammography tubes, the glass window of the tube is replaced with ____________ to reduce patient skin exposure.
molybdenum
beryllium
graphite
pyrex
17 multiple choice 1 point
most of the inherent filtration of a typical x - ray equipment comes from the
dielectric oil.
window of the glass envelope.
plexiglas collimator shadow plate.
collimator mirror.

Explanation:

1. In mammography tubes, beryllium is used to replace the glass window to reduce patient skin exposure due to its low - atomic - number and good x - ray transparency properties.
2. The inherent filtration of a typical x - ray equipment mainly comes from the window of the glass envelope as it is part of the x - ray tube structure through which x - rays pass first and can absorb some low - energy x - rays.

Answer:

1. B. beryllium
2. B. window of the glass envelope