Podcast
Questions and Answers
What happens to intensifying screens when they are struck by radiation?
What happens to intensifying screens when they are struck by radiation?
- They expand in size.
- They fluoresce. (correct)
- They absorb heat.
- They emit sound.
What is required to identify the type of intensifying screens fitted inside a cassette?
What is required to identify the type of intensifying screens fitted inside a cassette?
- A system of colors.
- A clear numbering system outside the cassette.
- An indelible marker on the outside. (correct)
- A digital labeling inside the cassette.
Which statement best represents the maintenance requirements for cassettes and intensifying screens?
Which statement best represents the maintenance requirements for cassettes and intensifying screens?
- They should be inspected and cleaned regularly. (correct)
- They should be discarded after one use.
- They only need cleaning when visibly dirty.
- They are not required to maintain any records.
What can create marks on films when using intensifying screens?
What can create marks on films when using intensifying screens?
What is typically provided by manufacturers concerning screen speed?
What is typically provided by manufacturers concerning screen speed?
What should be done before removing an old light bulb?
What should be done before removing an old light bulb?
Why should a quartz type bulb not be handled with bare fingers?
Why should a quartz type bulb not be handled with bare fingers?
What is the primary purpose of the light in a collimator?
What is the primary purpose of the light in a collimator?
What is the recommended action if unsure about changing a light bulb?
What is the recommended action if unsure about changing a light bulb?
What can occur if the mirror or light bulb in a collimator is dislodged?
What can occur if the mirror or light bulb in a collimator is dislodged?
What must be done if the grid line pattern or density is unacceptable after the initial exposure?
What must be done if the grid line pattern or density is unacceptable after the initial exposure?
What is the lead equivalent of aprons used for radiation protection?
What is the lead equivalent of aprons used for radiation protection?
Why is lead rubber preferred for making protective items?
Why is lead rubber preferred for making protective items?
What precaution should be taken when storing lead rubber items?
What precaution should be taken when storing lead rubber items?
What cleaning method is recommended for lead rubber aprons?
What cleaning method is recommended for lead rubber aprons?
Which of the following is NOT a type of lead rubber item mentioned?
Which of the following is NOT a type of lead rubber item mentioned?
What is the recommended frequency for checking electrical connections and wiring?
What is the recommended frequency for checking electrical connections and wiring?
What is an important consideration when using lead rubber aprons during radiographic procedures?
What is an important consideration when using lead rubber aprons during radiographic procedures?
What should be done if images from an exposure test are still unacceptable after adjusting the FFDs?
What should be done if images from an exposure test are still unacceptable after adjusting the FFDs?
What action should be taken if a fluorescent tube is found to be brighter than the others after replacement?
What action should be taken if a fluorescent tube is found to be brighter than the others after replacement?
What should be confirmed about the electrical connections during the evaluation?
What should be confirmed about the electrical connections during the evaluation?
What is a necessary check to ensure correct installation of fluorescent tubes?
What is a necessary check to ensure correct installation of fluorescent tubes?
When is it appropriate to replace fluorescent tubes?
When is it appropriate to replace fluorescent tubes?
What is an important aspect of ensuring even light source in viewing boxes?
What is an important aspect of ensuring even light source in viewing boxes?
What needs to be done if there is a noticeable difference in light intensity between viewing boxes?
What needs to be done if there is a noticeable difference in light intensity between viewing boxes?
What is a key factor to check regarding wiring conditions?
What is a key factor to check regarding wiring conditions?
What is a primary benefit of using radiopaque positioning aids?
What is a primary benefit of using radiopaque positioning aids?
What type of bottle can be used as a cassette support in weight bearing views?
What type of bottle can be used as a cassette support in weight bearing views?
Why should the ratchet and fixing mechanisms on positioning pads be inspected regularly?
Why should the ratchet and fixing mechanisms on positioning pads be inspected regularly?
What is a necessary precaution when using improvised positioning aids?
What is a necessary precaution when using improvised positioning aids?
Which of the following materials can be used to create custom shapes for positioning?
Which of the following materials can be used to create custom shapes for positioning?
What should be done to measuring calipers to maintain their accuracy?
What should be done to measuring calipers to maintain their accuracy?
How can calculating radiographic exposure factors be made more accurate?
How can calculating radiographic exposure factors be made more accurate?
How should plastic band mechanisms be maintained?
How should plastic band mechanisms be maintained?
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Study Notes
Equipment Required for Maintenance and Safety
- Ensure correct spare light bulbs are available for immediate access.
- Staff must have adequate training to replace faulty bulbs safely; if uncertain, contact an electrician.
- Use a collimator to align the light beam with the X-ray beam accurately.
Changing a Light Bulb
- Prioritize safety by switching off power before bulb replacement.
- Handle quartz bulbs carefully to avoid contact with skin oils that can reduce lifespan.
- Confirm the replacement bulb matches specifications, particularly any orientation requirements.
- Replace the old bulb promptly to maintain functionality.
Collimator Functionality
- The light in a collimator facilitates accurate alignment of the X-ray beam.
- Accurate bulb and mirror positioning is critical; misalignment can exclude areas of interest or overexpose others.
Intensifying Screens
- Cassettes must be clearly labeled and marked to indicate the type of intensifying screens used.
- Screen speed information should be prominently displayed on the outside of cassettes.
- Regular inspection and cleaning of cassettes and screens are essential; maintain records of these activities.
Lead Rubber Aprons and Gloves
- Lead rubber effectively absorbs radiation and is used in various forms for protection.
- Weekly maintenance includes cleaning with soap and water; avoid folding or exposing to heat.
- Aprons should not be considered a complete shield against scatter; they typically have a lead equivalence of 0.25mm to 0.5mm.
Viewing Box Evaluation
- Check electrical connections and wiring for safety and functionality.
- Ensure fluorescent tubes are correctly installed and emit even light; replace as necessary.
- Replacing tubes at different times can lead to brightness inconsistencies; ensure uniform light across viewing boxes.
Patient Positioning Aids
- Use compression bands and water bottles for effective positioning during procedures.
- Regularly inspect and clean reusable positioning aids to maintain hygiene and effectiveness.
- Ensure any improvised aids are checked for radiolucency.
Patient Measuring Calipers
- Calipers facilitate accurate measurement of body parts for radiographic exposure calculations.
- Any distortion can impact accuracy; store calipers in a secure and organized manner.
- Regular cleaning is necessary to maintain their condition.
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