Podcast
Questions and Answers
When placing multiple images on the same Imaging Plate (IP), what precautions should be taken?
When placing multiple images on the same Imaging Plate (IP), what precautions should be taken?
- Use larger focal spot
- Increase exposure time
- Avoid collimation
- Careful collimation and lead masking (correct)
What type of collimation is preferred for lower limb radiography if the study allows it?
What type of collimation is preferred for lower limb radiography if the study allows it?
- Two-sided collimation
- Random collimation
- Four-sided collimation (correct)
- No collimation
What is the recommended range of kV for radiography of the lower limbs?
What is the recommended range of kV for radiography of the lower limbs?
- 100-120 kV
- 50-70 kV (correct)
- 30-40 kV
- 80-90 kV
When using grids for lower limb radiography, what anatomy thickness typically requires their use?
When using grids for lower limb radiography, what anatomy thickness typically requires their use?
For an AP foot (Dorso-plantar projection), what is the recommended cassette size?
For an AP foot (Dorso-plantar projection), what is the recommended cassette size?
Study Notes
Multiple Images on an Imaging Plate (IP)
- When placing multiple images on the same IP, take precautions to avoid image overlap and confusion.
Collimation for Lower Limb Radiography
- Preferred collimation for lower limb radiography is circular or elliptical collimation, if the study allows it.
kV Range for Lower Limb Radiography
- Recommended kV range for radiography of the lower limbs is 50-60 kV.
Grid Use in Lower Limb Radiography
- Grids are typically required for lower limb radiography when the anatomy is thicker than 10 cm.
AP Foot (Dorso-plantar Projection) Cassette Size
- For an AP foot (Dorso-plantar projection), the recommended cassette size is 18 x 24 cm.
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Description
Learn about the principal exposure factors for radiography of the lower limbs, including kV settings, exposure time, focal spot size, mAs, the use of grids and multiple exposures per imaging plate.
