1MEDP 4111 Homework A

1MEDP 4111 Homework A - Saragusa 1 Nick Saragusa 1/30/07...

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Saragusa 1 Nick Saragusa 1/30/07 MEDP 4111 Section 01 Homework A 1. Briefly note two ways (for each) by which a real x-ray source, object, and receptor differ from ideal. A real x-ray source differs from ideal by the x-rays not being parallel, and that there is a finite size source of x-rays. An object differs from ideal through the absorption of energy, which reduces contrast, and the motion of a patient and his or her organs that result in blurring and also reduces contrast. A receptor differs from ideal by intrinsic resolution and secondary radiation and scatter. 2. What are the characteristic x-ray energies produced by bombarding a roentgenium target with 120-keV electrons? What are the characteristic x-ray energies produced from the same target with 140-keV electrons? (In both cases, consider only transitions to fill a vacancy in the K-shell.) 3. Bremsstrahlung x-rays are emitted when electrons collide with the atoms in the x- ray tube target. Explain (with words and/or diagram) why these x-rays exhibit a
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This note was uploaded on 09/22/2010 for the course PSYC 2040 taught by Professor Adair during the Spring '10 term at LSU.

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1MEDP 4111 Homework A - Saragusa 1 Nick Saragusa 1/30/07...

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