6182578
Descrição
FlashCards por RadTech Fairy, atualizado more than 1 year ago
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Criado por RadTech Fairy
aproximadamente 8 anos atrás
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| Questão | Responda |
| kV | Kilovoltage controls the energy (penetrating power) of the x-ray beam |
| mA | Milliamperage controls the quality or number of x-rays produced |
| ms | Exposure time controls the duration of the exposure usually in milliseconds |
| CONTRAST | the difference in density between adjacent areas of a radiographic image |
| DENSITY | the amount of "blackness" on the processed radiograph |
| What is the primary controlling factor of DENSITY? | mAs controls the quantity of x-rays emitted from the x-ray tube AND the duration of exposure |
| What's the primary controlling factor of CONTRAST? | kV higher kV = lower contrast lower kV = higher contrast |
| Annode Heel Effect | The patient should be positioned so the thicker portion of the body (part) is at the CATHODE end of the x-ray tube The thinner part of the body (part) should be positioned under the ANODE |
| What happens to your image if the CR is not centered on the grid? | The image will be laterally off center |
| What happens to your image if the GRID is off-level? | Image will be blurred |
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