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patient as a beam em
patient as a beam emitter
| Radiography | Patient as a beam emitter |
|---|---|
| Attenuation | reduction in photons remaining in beam after passing through a given thickness of material |
| Increased part thickness results in? | increased attenuation |
| What is the radiographers greatest variable? | the patient |
| Attenuation = | scatter + absorption |
| Atomic number and density of air is | atomic #7.78, density 1.29 |
| Atomic number and density of fat is? | atomic # 6.46, density 916 |
| Atomic number and density of water is ? | atomic # 7.51, density 1000 |
| Atomic number and density of muscle is ? | atomic # 7.64, density 1040 |
| Atomic number and density of bone is ? | Atomic # 12.31, density 1650 |
| Which has low tissue density and absorbs few photons? | air |
| Which has tissue density similar to water? | fat |
| Which has an effective atomic number slightly less than muscle? | fat |
| Calcium is among the _______ atomic number of elements found in the body. | highest |
| Which absorbs a lot of photons? | bone |
| What is the patients relationship to image quality | subject density, subject contrast, subject detail, subject distortion |
| What is subject density? | how tightly it's packed |
| What is subject contrast? | different body compostions in relation to each other |
| Subject detail is dependent on what? | position within the body and the body's placement in relationship to the IR |
Created by:
akd72012
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