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RADD 2501 Source Image Distance - Review Questions

# RADD 2501 Source Image Distance - Review Questions - 6 A...

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SID REVIEW 1. State 2 AKA’s for SID. 2. State the inverse square law formula: 3. The exposure rate 3 feet from a source of radiation is 40mR per hour. What is the exposure rate at 6 feet? 4. The exposure rate 3 feet from a source of radiation is 40mR per hour. What is the exposure rate at 12 feet? 5. State the new mAs formula 6. A lumbar spine radiograph requires 30 mAs at 40” SID.
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Unformatted text preview: 6. A lumbar spine radiograph requires 30 mAs at 40” SID. What mAs will be required to achieve the same radiographic density if the SID is changed to 80”? 7. A cervical spine radiograph requires 12 mAs at 72” SID. What mAs is required to achieve the same radiographic density if the SID is changed to 40”?...
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