Exam 11: Scatter Control

The Moiré effect is also known as the _________ pattern.

The unrestricted primary x-ray beam is

The grid is located

What is the grid ratio if the grid frequency is 100 lines/inch,and the lead strips are 1.8 mm high and 0.3 mm apart?

A focused grid's lead strips are angled to match

The distance between the grid and the convergent line is the

The cutoff that appears as a strip of appropriate density in the middle of the image and a significant loss of density on both sides is

During the exposure,the grid in the bucky

Absorption of transmitted photons by a grid caused by misalignment is

_____________________ collimation means _________________ field size.

The location in space where all the lines extended from the lead strips meet is the

To compensate for some of the loss of recorded detail due to the large OID used with the air gap technique,the ________ should be increased as well.

When imaging the pelvis,changing from 14 × 17 collimation to 8 × 10 collimation requires

Restriction of the primary beam to the anatomy of interest

When the x-ray beam is angled across the lead strips you have _________ cutoff.

The two major factors that affect the amount of scatter radiation produced and exiting the patient are

Which of the following factors need to be considered when determining the grid to be used for a specific examination?

The type of grid that is permanently mounted but includes a channel for the IR to slide into is the

The only grid cutoff error that can occur with a parallel grid is

A linear grid