HW 7-Radiation Imaging Flashcards
Which imaging noise parameter is related to the number of photons that interact with the detector?
- Quantum Mottle
- Scatter Radiation
- Structure Mottle
- Graininess
Quantum Mottle
The ability to distinguish between two separate objects and visually distinguished them from one another is called?
- Resolution
- Precision
- Accuracy
- Imaging
- Resolution
Which of the following is NOT related to spatial resolution?
- Sharp interface between objects
- Small objects
- Low density objects
- High contrast objects
Low density objects
An irregularity on a radiation image that is not due to the proper shadowing of tissue by the primary beam is called
- Penumbra
- An artifact
- Noise
- Quantum Mottle
An artifact
Contrast resolution is associated with which of the following
- Objects with sharp, high density interfaces
- Objects of similar density
- Objects of equal size
- Objects with narrow separations
Objects of similar density
The electron devise used in radiation therapy to image patients is called
- Radiographic Digital Film Cassette
- Electronic Reconstructed Digital Image
- Radiographic Image Portal System
- Electronic Portal Image Device
Electronic Portal Image Device
Artifacts due to a pixel malfunction in the detector would be an example of
- Software artifact
- Noise artifact
- Image Receptor artifact
- Object artifact
Image Receptor Artifact
Which of the following is helpful in reducing patient motion artifacts
- Restricted patient motion
- Detector close to patient
- All of the above
- Shorter imaging time
All of the above
Which of the following are components of imaging noise?
- Structure Mottle
- All answers are correct
- Quantum Mottle
- Graininess
- Scatter Radiation
All answers are correct
Thicker body parts contribute to decrease image quality due to
- Increase scatter within the patient
- Higher energy required
- Higher MAs required
- All answers are correct
Increase scatter within the patient
