Chapter 11 Filtration Radiation Protection Test Review

Low energy photons

Filtration is the process of eliminating undesirable ____ by the insertion of absorbing materials into the primary beam

Increase

As the tubes age they cause a/an ____ in the inherent filtration

Removing low energy photons

Filtration affects patient dose by _______ .

Less

Thicker portions of compensating filters are matched to the ____ dense patient body part

Aluminum, Copper, Glass

What materials are used as a filter?

HVL, half value layer

The amount of material that will reduce the intensity of the primary beam to one-half its original value is the ____ .

Al/Eq

Filtration can be expressed in terms of ____ .

Hardening

Filtration is sometimes called ____ the beam because it removes the low-energy photons.

Less, image

Low-energy photons have ____ energy to exit the patient and make contribution to the ____?

Inherent

What term describes filtration that is part of the x-ray tube and the tube housing?

Uneven/Unequal

A compensating filter is designed to solve a problem involving ____ subject densities

Inherent

Which term best describes the filtration that occurs as the primary beam passes through the glass window of the x-ray tube?

Tube housing

Most of the inherent filtration of a typical x-ray equipment comes from the _____ .

Inherent and Added

Total filtration is equal to the sum of _____ filtration

Added, increased

When filtration is ____, technical factors must be ____ to maintain the same density.

Added

The collimator is considered what type of filtration?

Patient exposure

What is affected by HVL?

Compound

A ____ filter uses 2 or more materials to enhance the absorbing ability of the filter

1.0 mm Al/Eq

What thickness of filtration will result in the lowest entrance skin exposure does to the patient?