sp 2006

Question 1

To double the density of a film by using mAs, what would you do?

Answer 1

increase the mAs by 100%

Question 2

T/F. A reciprocating grid is thicker than a stationary grid?

Answer 2

T

Question 3

When converting from a grid with a low ratio to a grid with a high ratio, how to do maintain good film quality?

Answer 3

increase the mAs

Question 4

Which type of grid is recommended for spinal radiography in the usual chiropractic office?

Answer 4

focused grid

Question 5

What effect on scatter does using a high kV technique have?

Answer 5

produces more scatter

Question 6

What is the preferred focused grid range for spinal radiography?

Answer 6

40” to 72”

Question 7

If a film has an overall darkened gray appearance but visible structures, what is the probable cause of the problem?

Answer 7

exposure of the film to scatter

Question 8

The term “optimal kV” refers to what?

Answer 8

the lowest possible mAs with acceptable contrast on the film

Question 9

How many lines per inch are recommended for a stationary grid?

Answer 9

100-103

Question 10

Diminished penetration at the periphery of a grid is termed what?

Answer 10

grid cut-off

Question 11

If a film is said to be “burned out” what would it look like?

Answer 11

too dark

Question 12

What is the main reason why a “fixed kV technique is preferred”?

Answer 12

contrast is consistent

Question 13

Primary AND scattered rays that leave the patient and reach the grid is termed what?

Answer 13

remnant radiation

Question 14

T/F. A moving grid would produce the least amount of grid lines?

Answer 14

T

Question 15

Exceeding the optimal kV range while maintaining good density will yield a film with what type of contrast?

Answer 15

long scale contrast

Question 16

As a general rule, if you are going to x-ray an elderly patient, how should you adjust your radiographic technique?

Answer 16

decrease that shit

Question 17

Using a 10:1 stationary grid would have what effect on patient exposure?

Answer 17

increase it

Question 18

If you took a lateral cervical with 66 kV at 100 mAs for 1/10 of a second at 72” FFD and it was too light but you could see the structures, how would you adjust your retake to solve the problem?

Answer 18

increase kV by 15%

Question 19

About how much increase in mAs is required when going from a non-grid technique to a technique with a 12:1 grid?

Answer 19

increase mAs by 5x

Question 20

If you took a 14”x17” lateral lumbar film and saw that the L5-S1 area was too light, what would be the best thing to do for the retake?

Answer 20

take a spot 8”x10” lateral, increase the mAs by 60% and increase the kV

Question 21

If you saw a blood vessel on end (axially) on a chest film it would probably look like which would of the 4 natural body (subject) densities?

Answer 21

metal…wtf mate

Question 22

If you saw 2 structures each with paralleling tracks of calcification overlying the articular pillars diverging at the superior and close at the inferior, what would you be looking at?

Answer 22

part of the thyroid cartilage you dumb fuck

Question 23

If you took an A-P lumbar on a thin patient using 85 kV at 100 mAs with the exposure time of 1/2 second, and the film demonstrated all of the structures but was too light…what should you do?

Answer 23

increase the mAs by doubling it

Question 24

You first take an A-P lumbar film using 90 kV with 100 mAs for 1 second at 40” SID. When you look at the film you see it is very gray and you are going to retake it…what should you do?

Answer 24

use 200 mAs and decrease the kV by 15%

Question 25

You take a lateral cervical film at 65 kV and 10 mAs without a grid, it is light but you can see the structures…what should you do?

Answer 25

increase the kV by 15%