Podcast
Questions and Answers
What is a major drawback of CR systems?
What is a major drawback of CR systems?
What is a disadvantage of using single-plate readers in CR systems?
What is a disadvantage of using single-plate readers in CR systems?
What is a source of noise in CR systems?
What is a source of noise in CR systems?
Why do PSP detectors in CR systems pick up background radiation and other scattered radiation?
Why do PSP detectors in CR systems pick up background radiation and other scattered radiation?
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What is a consequence of not erasing signals from stored plates after a day or so in CR systems?
What is a consequence of not erasing signals from stored plates after a day or so in CR systems?
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What is a challenge of taking care of multiple PSPs in CR systems?
What is a challenge of taking care of multiple PSPs in CR systems?
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What is the approximate delay for scanning CR plates?
What is the approximate delay for scanning CR plates?
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What is a disadvantage of using CR systems in facilities with a high patient workload?
What is a disadvantage of using CR systems in facilities with a high patient workload?
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How do modern CR systems address the issue of cassette transfer and plate scanning?
How do modern CR systems address the issue of cassette transfer and plate scanning?
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What is a consequence of PSP detectors being in detection position all the time in CR systems?
What is a consequence of PSP detectors being in detection position all the time in CR systems?
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Study Notes
Digital Radiography (DR) vs. Computed Radiography (CR)
Advantages of DR over CR
- Portability: DR systems allow for portability, whereas CR systems are bulky and fixed
- Image Quality: DR offers better image quality with higher DQE (65%) and lesser artifacts
- Speed: DR provides rapid image viewing within seconds, whereas CR takes around 6-8 minutes
- Patient Throughput: DR enables higher patient throughput due to faster image acquisition and display
- Flexibility: DR detectors can be retrofitted to existing technology, making it more flexible
- Cost: DR is more efficient, with lower costs for replacement parts and maintenance
- Portability and Convenience: DR allows for portable imaging with a single detector and mobile kit, eliminating the need for multiple cassettes
Disadvantages of CR
- Labor-Intensive: CR requires technicians to leave the patient and workstation to remove and insert cassettes into the reader
- Time-Consuming: CR processing time is longer due to the need to readout and process plates
- Noise and Interference: CR detectors are prone to picking up background radiation, scattered radiation, and residual signals
- Labor and Cost: CR requires significant labor and cost for inventory, cleaning, and quality assurance of multiple PSPs
- Delay: CR has a short delay of approximately 1 minute for scanning plates
Key Differences between CR and DR
- Initial Investment: DR has higher initial investment costs than CR
- Image Display: DR provides rapid image viewing, whereas CR takes around 6-8 minutes
- Labor Requirements: DR is completely digitized, while CR requires labor-intensive cassette transfer and processing
- Portability: DR is more portable, whereas CR is bulkier and less portable unless newer wireless systems are used
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Description
Comparing the advantages and disadvantages of Digital Radiography (DR) and Computed Radiography (CR) in medical imaging, including portability and flexibility.
