Ch. 31 Quality Management (Exp II) Flashcards
Quality assurance includes each of the following EXCEPT:
a. Equipment maintenance
b. Filing systems
c. Diagnosis
d. Scheduling
c. Diagnosis
The largest hospital accreditation agency is the:
Joint Commision
The Joint Commission approval is linked to _____ reimbursement.
Federal, state, and insurance company
Input for the purchase of new radiographic equipment should include the:
Radiologists, radiographers, and administrators
Installation and acceptance testing of equipment is the responsibility of the:
Radiology equipment vendor
Routine quality management procedures should be performed by the:
Qualified radiographer
Which monitoring tests should be done on a daily basis?
Processor sensitometry
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
a. Processor sensitometry
Test tools for focal spot size estimation include each of the following EXCEPT:
a. Pinhole camera
b. Star test pattern
c. Line pair resolution tool
d. Motorized synchronous top
d. Motorized synchronous top
Focal spots measuring 0.3 mm or less should be measured with a:
Star test pattern
Focal spots measuring 0.3 mm or more should be measured with a:
Pinhole camera
Which type of equipment is used to measure half-value layers?
a. Sensitometer
b. Aluminum filters
c. Dosimetry equipment
d. More than one of the above
d. More than one of the above
When testing collimator accuracy, an SID error of ____ is allowed.
2%
The centering mark should be within ____ of the light field central ray.
1%
Distance indicators are checked with a:
Tape measure
A generator must be recalibrated when the kVp drifts beyond ____ kVp of the labeled setting.
5
The accuracy of single-phase generator time settings can be measured with a:
Spinning top test
The accuracy of three-phase generator time settings can be measured with a:
Motorized synchronous spinning top test
Exposure time settings should be maintained within ____ of the labeled setting.
+/- 5%
The source-to-skin distance limit for a stationary fluoroscopic unit is ____ inches.
15
Tomographic system uniformity and completeness of motion are tested with a:
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
a. Automatic brightness control
Most AECs utilize ____ ion chambers in various combinations.
Three
Computerized storage and transmission systems for digitized images of all types are called:
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
d. 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,
Exposure reproducibility is suspect.
A qualified x-ray service engineer should e used to evaluate and correct the following radiographic/fluoroscopic imaging features:
- Film processor sensitometry
- Automatic brightness control
- Source-to-skin distance limits
- Fluoroscopic contrast
- Image display monitor brightness/contrast
- AEC reproducibility
- Automatic brightness control
- Fluoroscopic contrast
- Image display monitor brightness/contrast
- AEC reproducibility
Digital detectors with a higher DQE will:
Produce better images of small objects with low subject contrast
A common device to measure display monitor quality and characteristics is a:
SMPTE pattern
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?
- Percent of repeat images per room
- Percent of repeat mages per radiographer
- Automatic brightness control instability
- Radiologist interpretation accuracy
- Radiographer positioning accuracy
- Patient exam waiting times
- Equipment malfunctions
- Radiographer exposure technique accuracy
- Transmission times to PACS
- Percent of repeat images per room
- Percent of repeat mages per radiographer
- Radiographer positioning accuracy
- Equipment malfunctions
- Radiographer exposure technique accuracy
