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Final Exam
Radiographic Physics
| Question | Answer |
|---|---|
| Compton scattering is an interaction between an x-ray and a(n) _________ electron that results in ionization and loss of energy. | outer shell |
| At energies below 40 keV, the predominant x-ray interaction in soft tissue and bone is ______________. | photoelectric absorption |
| X-rays transmitted without interaction contribute to ___________________. | the radiographic image |
| If 5% of an incident beam is transmitted through a body part, then 95% of that beam was ______________. | attenuated |
| Compton interactions, photoelectric absorption, and transmitted x-rays all contribute to _________________. | differential absorption |
| The photoelectric effect is an interaction between an x-ray and a(n) _________ electron that results in total x-ray absorption. | inner shell |
| Coherent scattering is an interaction between _______ x-rays and atoms. | low energy |
| High kVp techniques reduce ____________. | patient dose |
| An increase of 15% in kVp is equivalent to increasing mAs _____. | 100% |
| X-ray quantity is _______ proportional to the ________ of the distance from the source. | inversely and square |
| The main purpose of added filtration is to reduce ____________. | patient dose |
| A compensating filter is used to create ________ exposure with a body part of _________ thickness. | uniform and nonuniform |
| X-ray intensity is directly proportional to _____. | mAs |
| Added filtration will ______ beam energy and ______ HVL. | increase and decrease |
| A 10% increase in kVp has ________ effect on x-ray intensity than/as a 10% increase in mAs. | much greater |
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ashleymarshall