FREE AND STUDY GAMES ABOUT SCATTER RADIATION

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FREE AND STUDY GAMES ABOUT SCATTER RADIATION

EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -89 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: An IR that has a grid permanently mounted to its surface

Answer:

Grid Cassette

Question 2: Grids need to be applied when

Answer:

Anatomic part is thicker than 10 cm and KVP is above 60.

Question 3: Radiolucent

Answer:

Allows radiation through

Question 4: Types of beam - restricting devices

Answer:

Aperture Diaphragm, Cones, Cyclinders, collimators

Question 5: The larger the body part, the more tissues to interact with photons, so...

Answer:

More scatter is created Question 6: As grid ratio increases: Contrast, patient dose, and likelihood of grid cut off

_______

Answer:

Increases

Question 7: ___ is not useful and exposes IR and degrades images

Answer:

Scatter Question 8: Beam restriction serves 2 purposes:

Answer:

Limiting patient exposure, reducing amount of scatter radiation

Question 9: Grids require

Answer:

Additional mAs, resulting in higher patient dose.

Question 10: KVP

Answer:

Contrast Question 11: What contains lead strip or lines that have a precise height, thickness, and space between them and are radiopaque

Answer:

Grids

Question 12: What are the two types of grid patterns?

Answer:

Linear and Cross - Hatched

Question 13: What are the two types of grids?

Answer:

Stationary and Moving grids Question 14: A collimator has sets of _____ at right angles to one another that move in opposing pairs

Answer:

Lead Shutters

Question 15: The most common beam restrictor in radiography is

Answer:

Collimator

Question 16: Radiopaque

Answer:

Blocks radiation Question 17: When a grid used at a distance other than specified as a focal range. Will have grid cut off along the peripheral edges of the image. Higher grid ratio requires a greater positioning accuracy.

Answer:

Off Focus Grid Error

Question 18: The lead shutters have 2 purposes.

Answer:

Regulate field size and reduce penumbra Question 19: The air gap technique, the greater the gap, the greater the reduction in ____

Answer:

scatter reaching the IR Question 20: Matches the size of the cassette and is used by placing it on top of the image receptor

Answer:

Wafer grid

Question 21: When the tube is angled across the long axis of the grid strips. Improper tube or grid positioning. Most common occurs with stationary grids being used for mobile exams or decubitus views

Answer:

Off-level grid error Question 22: Has lead lines that are angled or canted to match the angle of divergence of the primary beam

Answer:

Focused Grid

Question 23: Higher Z#, ____ PE, and ____ scatter

Answer:

More, Less

Question 24: Scatter decreases

Answer:

Contrast Question 25: Move during the xray exposure in a lateral direction and blurs the grids lines

Answer:

Moving grids Question 26: The convergent and convergent point are important because they determine the

Answer:

Focal distance of a focused grid

Question 27: ______ allows more transmitted photons to reach the IR

Answer:

Focused Grid

Question 28: Limiting the xray beam field size is accomplished with a

Answer:

Beam - restricting device