Chapter 31 (Module 2)

Question 1

Quality assurance includes each of the following EXCEPT
a. equipment maintenance.
b. radiology reports accuracy.
c. diagnosis of images.
d. scheduling.

Answer 1

Diagnosis of images

Question 2

The largest hospital accreditation agency is the
a. MSQA.
b. The Joint Commission.
c. Det Norske Veritas (DVN).
d. FDA.

Answer 2

The Joint Commission

Question 3

The Joint Commission approval is linked to ____ reimbursements.
a. federal
b. state
c. insurance company
d. all of the above

Answer 3

All of the above

Question 4

Input for the purchase of new radiographic equipment should include the
a. radiologists.
b. radiographers.
c. administrators.
d. all of the above.

Answer 4

All of the above

Question 5

Installation and acceptance testing of equipment is the responsibility of the
a. radiation physicist.
b. radiology supervisor.
c. radiology equipment vendor.
d. biomedical engineering department.

Answer 5

Radiology Equipment Vendor

Question 6

Routine quality management procedures should be performed by the
a. radiation physicist.
b. qualified radiographer.
c. chief radiologist.
d. biomedical engineering staff.

Answer 6

Qualified radiographer

Question 7

Which quality control should be done on a regular, ongoing basis?
a. collimator accuracy
b. focal spot size estimation
c. image repeat analysis
d. beam HVL

Answer 7

Image repeat analysis

Question 8

Each of the following monitoring tests should be done on a semiannual basis EXCEPT
a. processor sensitometry.
b. focal spot size estimation.
c. collimator accuracy.
d. kilovoltage accuracy.

Answer 8

Processor sensitometry

Question 9

Test tools for focal spot size estimation include each of the following EXCEPT a
a. pinhole camera.
b. star test pattern.
c. line pair resolution tool.
d. motorized synchronous top.

Answer 9

Motorized synchronous top

Question 10

Focal spots measuring 0.3 mm or less should be measured with a
a. star test pattern.
b. pinhole camera.
c. spinning top.
d. dosimeter.

Answer 10

Star test pattern

Question 11

Focal spots measuring 0.3 mm or more should be measured with a
a. star test pattern.
b. pinhole camera.
c. spinning top.
d. SMPTE pattern.

Answer 11

Pinhole camera

Question 12

Which type of equipment is used to measure half-value layers?
a. wire mesh test tool
b. goniometer
c. dosimetry equipment
d. DUKE chest phantom

Answer 12

DUKE chest phantom

Question 13

When testing collimator accuracy, an SID error of ____ is allowed.
a. 20 percent
b. 10 percent
c. 2 percent
d. 0 percent

Answer 13

2 percent

Question 14

The centering mark should be within ____ of the light field central ray.
a. 0 percent
b. 1 percent
c. 11 percent
d. 100 percent

Answer 14

1 percent

Question 15

Distance indicators are checked with a
a. chalk line.
b. cell phone.
c. laser.
d. tape measure.

Answer 15

Tape measure

Question 16

A generator must be recalibrated when the kVp drifts beyond ____ kVp of the labeled setting.
a. 2
b. 5
c. 10
d. 12

Answer 16

5

Question 17

The accuracy of single-phase generator time settings can be measured with a
a. sensitometer.
b. densitometer.
c. computerize dosimeter.
d. penetrometer.

Answer 17

Computerize dosimeter

Question 18

A thorough reject analysis program would include data collection on images produced
a. by each technologist.
b. in each radiographic room.
c. by service engineers.
d. all of the above.

Answer 18

All of the above

Question 19

Exposure time settings should be maintained within ____ of the labeled setting.
a. +/- 5 percent
b. +/- 10 percent
c. +/- 15 percent
d. 0 percent

Answer 19

+/- 5 percent

Question 20

The source-to-skin distance limit for a stationary fluoroscopic unit is ____ inches.
a. 5
b. 12
c. 15
d. 25

Answer 20

15

Question 21

Tomographic system uniformity and completeness of motion are tested with a
a. pinhole camera.
b. wire mesh.
c. lead mask with a pinhole.
d. moving pendulum angle indicator.

Answer 21

Lead mask with a pinhole

Question 22

Tomographic systems should be tested for each of the following EXCEPT
a. automatic brightness control.
b. completeness of motion.
c. section depth indicator accuracy.
d. section thickness accuracy.

Answer 22

Automatic brightness control

Question 23

Most AECs utilize a ____ ion chamber combination.
a. single
b. two
c. three
d. four

Answer 23

Three

Question 24

Computerized storage and transmission systems for digitized images of all types are called
a. DSR.
b. MRI.
c. CT.
d. PACS.

Answer 24

PACS

Question 25

The accuracy of mA stations on a radiographic generator
a. should be measured after the timer and kVp accuracy have been confirmed.
b. tend to drift as the tube ages.
c. are measured using mR/mAs calculations across all mA stations.
d. all of the above.

Answer 25

All of the above

Question 26

You have just taken a CR radiograph of a patient’s knee and the S# is 225. Unfortunately, the image has some degree of motion distortion and needs to be repeated using the same exposure settings. In repeating the image, the new image shows no motion but the S# is now 400. No changes were made to collimation, patient position, exposure techniques, etc. Based upon this new S# value,
a. exposure reproducibility is suspect.
b. the mR/mAs is of no concern.
c. the exposure reproducibility is within tolerable limits.
d. none of the above.

Answer 26

Exposure reporducibility is suspect

Question 27

A qualified x-ray service engineer should be used to evaluate and correct the following radiographic/fluoroscopic imaging features:
1. exam room repeat rates
2. automatic brightness control
3. source-to-skin distance limits
4. fluoroscopic contrast
5. image display monitor brightness/contrast
6. AEC reproducibility

a. 1, 2, 4, and 5 only
b. 2, 3, 5, and 6 only
c. 2, 4, 5, and 6 only
d. 1, 3, 4, and 6 only

Answer 27

2, 4, 5, and 6 only

Question 28

Digital detectors with a higher DQE will
a. require more dose to image adequately.
b. produce better images of small objects with low subject contrast.
c. produce a higher S:N ratio.
d. offer wider exposure latitude and lead to overexposures.

Answer 28

Produce better images of small objects with low subject contrast

Question 29

A common device to measure display monitor quality and characteristics is a/an
a. screen contact test tool.
b. foot candles spectrometer.
c. ABC resolution phantom.
d. luminance meter.

Answer 29

Luminance meter

Question 30

An effective method to assess department image quality is to perform a repeat image analysis. This procedure will demonstrate which of the following department traits?
1. percent of repeat images per room
2. percent of repeat images per radiographer
3. automatic brightness control instability
4. radiologist interpretation accuracy
5. radiographer positioning accuracy
6. patient exam waiting times
7. equipment malfunctions
8. radiographer exposure technique accuracy
9. transmission times to PACS

a. 1, 2, 3, 7, and 9 only
b. 1, 2, 5, 7, and 8 only
c. 3, 4, 6, 7, and 9 only
d. 2, 5, and 8 only

Answer 30

1, 2, 5, 7, and 8 only