FREE RADIOLOGY AND STUDY GAMES ABOUT

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FREE RADIOLOGY AND STUDY GAMES ABOUT

RADIOGRAPHIC GRIDS EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -86 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Where do we place the grid?

Answer:

between the patient & IR

Question 2: The ___ the grid ratio the less positioning lattitude

Answer:

higher

Question 3: What is the most commonly used moving grid?

Answer:

reciprocating

Question 4: Most common grid frequency used in rad dept. is ___ per inch

Answer:

100 lines

Question 5: Which grid produces the highest contrast?

Answer:

16:1

Question 6: 2 physical properties responsible for efficiency of a grid inn removing scatter

Answer:

grid ratio/grid frequency Question 7: Because of grid impurities, never accept a grid unless you inspect it with an ____

Answer:

industrial radiograph

Question 8: The most important way to reduce scatter production is ____.

Answer:

collimation Question 9: CR must be centered to both grids and perpendicular to film and cannot have any angle with ___.

Answer:

cross hatch grids Question 10: _____ require sensors in the bucky drawer to measure the size of the cassette.

Answer:

Automatic shuttering Question 11: When the primary beam is absorbed by the lead strips this is called ____.

Answer:

cut off

Question 12: _____ is based on positioning lattitude along with other factors

Answer:

grid selection

Question 13: For the most patient protection use...

Answer:

high kV Question 14: The most popular stationary grids vary from ___ to ___ lines per inch.

Answer:

60 to 80

Question 15: What is the downside of using air gap?

Answer:

increase magnification

Question 16: Most stationary are

Answer:

12:1

Question 17: Stationary to moving will increase patient dose ___.

Answer:

15% Question 18: In grid frequency, the thinner the strips and greater the chance of scatter rays passing through the more _____

Answer:

number of lead strips per inch

Question 19: The ____ grid ratio the more position lattitude we have

Answer:

lower Question 20: May provide soem filtration of scattered x-rays, produces less visible grid lines, absorbs more primary beam requiring higher techniques

Answer:

aluminum interspace material

Question 21: Grid ratio produce most density with a ____.

Answer:

5:1 grid

Question 22: In a focused grid when CR is not centered (area below CR will have density & rest white) and the grid is not parrallel with plane of the tube you will have ____

Answer:

off center, off level cut off

Question 23: As you increase grid ratio you ___ contrast and ____ density

Answer:

increase, decrease Question 24: Parrallel grids are used with techniques under ____ and with portable units.

Answer:

100 kVp Question 25: The angle of transmission in low ratio grid is ____ than in high ratio(meaning more scatter & primary can pass through a lower ratio grid)

Answer:

greater Question 26: Mostly used inn cervical/chest area and SID must increase to compensate for increase in OID is ________.

Answer:

Air gap technique

Question 27: Sensors are located on the tube stand to monitor _____.

Answer:

SID

Question 28: The number of lines per inch is ______

Answer:

grid frequency