Final Mon. 10/14

Question 0

3 factors that contribute to distortion

Answer 0

• object thickness
• object shape
• object position

Question 1

To minimize size distortion & blur one must

Answer 1

• increase SID

* decrease OID

Question 2

How does focal spot size & blur relate

Answer 2

•The larger the focal spot the more blur

Question 3

The smaller the focal spot the better the

Answer 3

•special resolution

Question 4

Quantity is related to

Answer 4

•mAs

Question 5

Quality is related to

Answer 5

•kVp

Question 6

Factors that influence quality

Answer 6

• kVp

* filtration

Question 7

Low kVp =

Answer 7

• high contrast
• short gray scale
• narrow latitude

Question 8

What will decrease patient dose high or low grid ratio

Answer 8

•low grid ration

Question 9

Does a grid have an effect on magnification?

Answer 9

•yes because of the Increase of OID

Question 10

Besides grid ratio what will also effect the clean up of scatter

Answer 10

•frequency

Question 11

Factors that reduce detail

Answer 11

• SID
• OID
• Focal spot size

Question 12

High speed vs low speed screens

Answer 12

• higher speed- decreases patient dose but increases blur

* low speed-increases patient dose but decreases blur, better detail

Question 13

Does mAs have anything to do with detail?

Answer 13

•no cuz they have nothing to do with blur

Question 14

Does processing have anything to do with density/contrast

Answer 14

•Yes can cause blur or grain/over or under developed

Question 15

Compensating wedge filter the thickest part should be on ankle or toes

Answer 15

•the thickest part should be over the toes

Question 16

What body habitus will require an increase in technique

Answer 16

•hypersthenic

Question 17

Does focal spot have anything to do with contrast

Answer 17

•no

Question 18

If distance is halved then mAs is

Answer 18

1/4 the original