Chapter 31 (Module 2) Flashcards by Jason Tarte

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

Diagnosis of images

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

The Joint Commission

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

All of the above

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

All of the above

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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.

Radiology Equipment Vendor

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

Qualified radiographer

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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

Image repeat analysis

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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.

Processor sensitometry

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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.

Motorized synchronous top

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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.

Star test pattern

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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.

Pinhole camera

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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

DUKE chest phantom

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

2 percent

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

1 percent

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

Tape measure

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

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

Computerize dosimeter

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.

All of the above

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

+/- 5 percent

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

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.

Lead mask with a pinhole

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.

Automatic brightness control

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

Three

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

PACS

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.

All of the above

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.

Exposure reporducibility is suspect

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

2, 4, 5, and 6 only

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.

Produce better images of small objects with low subject contrast

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.

Luminance meter

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

1, 2, 5, 7, and 8 only