Deck 13: Screen-Film Radiographic Technique

Question 1

List the following tissues in order from the most radiolucent to the most radiopaque.
I. muscle
II. fat
III. lung
IV. bone

A) IV, I, II, III
B) III, I, II, IV
C) III, II, I, IV
D) II, III, I, IV

Answer 1

III, II, I, IV

Question 2

An increase in mAs causes _____ in beam quality and _____ in beam quantity.

A) an increase, a decrease
B) an increase, no change
C) an increase, an increase
D) no change, an increase

Answer 2

no change, an increase

Question 3

At least a _____% change in mAs is necessary to produce a visible change in optical density.

A) 10
B) 15
C) 30
D) 50

Answer 3

30

Question 4

Both beam quality and beam quality are increased by _____.

A) increasing kVp
B) using 3-phase voltage
C) increasing mAs
D) both A and B

Question 5

Which technique would give the highest patient dose?

A) 90 kVp/200 mA @ 0.02 sec
B) 87 kVp/400 mA @ 0.02 sec
C) 74 kVp/400 mA @ 0.04 sec
D) 65 kVp/300 mA @ 0.1 sec

Question 6

A radiograph is taken using 75 kVp @ 20 mAs. Which change in technique would increase contrast but maintain the same density?

A) 85 kVp @ 10 mAs
B) 85 kVp @ 40 mAs
C) 65 kVp @ 20 mAs
D) 65 kVp @ 40 mAs

Question 7

What are the four primary exposure factors?

A) kVp, mAs, filtration, and voltage ripple
B) mA, time, distance, and filtration
C) kVp, mAs, time, and SID
D) mA, time, kVp controls, and focal spot size

Question 8

Beam penetrability is increased if _____ is/are increased.

A) mAs
B) SID
C) kVp
D) all of the above

Question 9

Added filtration has the effect of _____ the beam quality and _____ patient dose.

A) reducing, increasing
B) reducing, reducing
C) increasing, reducing
D) increasing, increasing

Question 10

A _____% increase in kVp has the same effect on optical density as doubling the mAs.

A) 5
B) 15
C) 30
D) 50

Question 11

There is a direct relationship between the quantity of x-rays and the _____.

A) milliamperage
B) kilovolt peak
C) filter thickness
D) voltage ripple

Question 12

If mAs is increased from 20 mAs to 40 mAs,the patient dose will _____.

A) not be affected
B) increase slightly
C) be halved
D) be doubled

Question 13

Beam quality is improved when the _____ is increased,but _____ has no effect on beam quality.

A) kilovoltage, filtration
B) kilovoltage, milliamperage
C) milliamperage, kilovoltage
D) milliamperage, filtration

Question 14

When only the optical density needs to be changed,only the _____ should be adjusted.

A) mAs
B) kVp
C) SID
D) filtration

Question 15

Patient thickness should be measured with the _____.

A) caliper
B) eyes
C) hands
D) SID tape

Question 16

The small focal spot will provide a _____.
I. higher quality x-rays beam
II. greater quantity of x-rays
III. finer detail of image

A) I only
B) I & III
C) III only
D) I, II & III

Question 17

Changes in kVp affect _____.

A) optical density
B) image contrast
C) image noise
D) all of the above

Question 18

A radiograph taken using 65 kVp @ 10 mAs is too light. Which technique would double the optical density while producing a wider scale of contrast?

A) 75 kVp @ 10 mAs
B) 75 kVp @ 20 mAs
C) 55 kVp @ 20 mAs
D) 55 kVp @ 40 mAs

Question 19

Which medical condition may require a lower technique?

A) atelectasis
B) emphysema
C) pneumonia
D) pleural effusion

Question 20

A radiograph with a long scale of contrast will have _____ latitude and _____ contrast.

A) narrow, low
B) narrow, high
C) wide, low
D) wide, high

Question 21

Foreshortening is caused by a(n)_____.

A) angled beam when the body part is parallel the image receptor
B) angled body part when the beam is perpendicular to the image receptor
C) angled beam that is perpendicular to the body part
D) perpendicular beam and the body part parallel to the image receptor

Question 22

With automatic exposure control the exposure is terminated when the optimum _____ is reached.

A) OD
B) time
C) mAs
D) kVp

Question 23

Sharpness of detail can be improved by increasing _____.

A) SID
B) OID
C) focal spot size
D) all of the above

Question 24

A variable mAs technique chart has a set kVp and specific mAs settings for _____.

A) small, medium, and large parts
B) every 2 cm of thickness
C) every 6 cm of thickness
D) either A or B

Question 25

In a variable kVp technique chart,the optimal mAs is set for each body part and there is a _____ kVp increase for each cm of thickness.

A) 6
B) 4
C) 2
D) 1