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RADD 2501 Source Image Distance - Sample Problems

RADD 2501 Source Image Distance - Sample Problems - SID...

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SID Problems 1. The intensity of radiation at 2 feet is 25 mR/hr. What is the intensity of radiation at 6 feet? 2. The intensity of radiation at 40” SID is 60 mR/hr. What is the intensity of radiation if we change the SID to 72” SID? Will the image appear overexposed or underexposed? 3. The intensity of radiation at 72” SID is 12 mR/hr. What is the intensity of radiation if we change the SID to 40” SID? Will the image appear overexposed or underexposed? 4. The radiographic density is appropriate when using 30 mAs, 73 kVp at 40”
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Unformatted text preview: SID. What change in exposure factors is necessary to keep image density the same if we change SID to 72”? 5. The radiographic density is appropriate when using 20 mAs, 73 kVp at 72” SID. What change in exposure factors is necessary to keep image density the same if we change SID to 40” SID? 6. Which of these will produce an image with the most geometric sharpness of detail? A. 30 mAs, 73 kVp, 36” SID B. 120 mAs, 73 kVp, 36” SID...
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