DRC Quality Control & Process Improvement 2

Question 1

Which sensitometric step on a film should be used to monitor the speed point in a quality control program?

Accepted Answer

Step with a density closest to 1.0 above base plus fog

Answer

The speed point is identified as the step density closest to 1.0 above base plus fog, representing mid-range film sensitivity.

Question 2

What is the primary purpose of using a reference radiograph in a quality assurance program?

Accepted Answer

To serve as a standard against which current images are compared

Answer

A reference radiograph provides a baseline standard of acceptable image quality for ongoing comparison and quality monitoring.

Question 3

A dental office notices that radiographs consistently show increased contrast but reduced overall density. The MOST likely cause is:

Accepted Answer

Developer solution that is too cool

Answer

Cool developer temperature slows development, reducing overall film density while producing higher apparent contrast due to incomplete development.

Question 4

How often should the automatic processor roller transport system be cleaned according to standard quality control protocols?

Accepted Answer

Daily

Answer

Automatic processor rollers should be cleaned daily to prevent chemical carryover, artifact formation, and contamination between developer and fixer tanks.

Question 5

Which type of artifact appears as a herringbone or tire-track pattern on a processed radiograph?

Accepted Answer

Reversed film placement artifact

Answer

A reversed film placement artifact (embossed dot pattern) appears as a herringbone or tire-track pattern caused by X-rays passing through the lead foil backing.

(DRC) Dental Radiology Certification for Dental Hygienist Practice Test

(DRC) Dental Radiology Certification for Dental Hygienist Practice Test

DRC Quality Control & Process Improvement 2