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1. What significant changes occur in the spectrum of a tungsten-anode x-ray tube if the tube voltage is below 70 kVp? 2. Explain why the

1. What significant changes occur in the spectrum of a tungsten-anode x-ray tube if the tube voltage is below 70 kVp?

2. Explain why the output of a mammographic (i.e., space-charge limited) x-ray tube is much lower than in a general-purpose tube.

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