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Questions and Answers
Which category of errors do the majority of radiographic errors fall into?
Which category of errors do the majority of radiographic errors fall into?
- Exposure errors
- Patient preparation errors
- Processing errors
- Technique and projection errors (correct)
What type of artifact is caused by incorrect vertical angulation?
What type of artifact is caused by incorrect vertical angulation?
- Double image artifact (correct)
- Pressure mark artifact
- Radiopaque artifact
- Dot artifact
Which exposure error results in a blank image on the radiograph?
Which exposure error results in a blank image on the radiograph?
- Image with high and low contrast
- Low density image
- Blank image is not an exposure error (correct)
- High density image
What is the consequence of PID (Position Indicating Device) alignment artifact on the radiograph?
What is the consequence of PID (Position Indicating Device) alignment artifact on the radiograph?
What type of error results in apices being cut off on the radiograph?
What type of error results in apices being cut off on the radiograph?
Which error results in a high density image (faint) on the radiograph?
Which error results in a high density image (faint) on the radiograph?
What type of artifact is caused by a dropped film corner?
What type of artifact is caused by a dropped film corner?
Which type of error leads to a distorted image on the radiograph?
Which type of error leads to a distorted image on the radiograph?
What type of error is characterized by a film with no image at all?
What type of error is characterized by a film with no image at all?
Which anatomical structure is most often ghosted in an OPG ghost image?
Which anatomical structure is most often ghosted in an OPG ghost image?
What leads to distortion due to patient's movement in dental X-rays?
What leads to distortion due to patient's movement in dental X-rays?
Which error results in a smudge resembling a fingerprint on the film?
Which error results in a smudge resembling a fingerprint on the film?
What type of error is indicated by yellowish brown discoloration on the X-ray film?
What type of error is indicated by yellowish brown discoloration on the X-ray film?
Which error is characterized by a black line on the X-ray film?
Which error is characterized by a black line on the X-ray film?
What does a ghost image in an OPG resemble?
What does a ghost image in an OPG resemble?
What is the cause of the lead apron artifact seen in X-rays?
What is the cause of the lead apron artifact seen in X-rays?
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Study Notes
Radiographic Errors
- Majority of radiographic errors fall into the category of positioning errors.
Vertical Angulation Errors
- Incorrect vertical angulation causes a type of artifact called "elongation" or "foreshortening".
Exposure Errors
- Insufficient exposure results in a blank image on the radiograph.
PID Alignment Artifact
- Consequence of PID alignment artifact on the radiograph is a blurred or distorted image.
Radiograph Image Errors
- Apices being cut off on the radiograph is a result of incorrect positioning of the PID.
- High density image (faint) on the radiograph is caused by overexposure.
Film Artifacts
- Dropped film corner causes a type of artifact called a "corner cut-off" or "film edge artifact".
- Distorted image on the radiograph is a result of incorrect film placement or incorrect film size.
Film Errors
- Film with no image at all is a result of underexposure or no exposure.
OPG Ghost Image
- The anatomical structure most often ghosted in an OPG ghost image is the vertebral column.
- OPG ghost image resembles the inverted and blurred shape of the imaged object.
Patient Movement Errors
- Patient movement during exposure leads to distortion on the radiograph.
Film Handling Errors
- Smudge resembling a fingerprint on the film is a result of handling the film carelessly.
- Yellowish brown discoloration on the X-ray film is an indication of outdated or expired film.
- Black line on the X-ray film is an indication of a film with a light leak or a hole.
Lead Apron Artifact
- Lead apron artifact seen in X-rays is caused by the lead apron being in the X-ray beam.
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