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M6W1
Fundamentals of Radiation
| Question | Answer |
|---|---|
| What sizes and designs are available for sensor image plates for digital x-rays? | Panoramic, cephalometric, full size 0 & 2 |
| What size is occlusal film? | 4 |
| What size is long bitewing film? | 3 |
| Narrow anterior film is size 4? T/F | False, size 1 |
| Child size film is size 4. T/F | False, it's size 0 |
| What size is adult film? | Size 2 |
| An experiment with a cathode ray tube was used to discovered Radiation. T/F | X-rays |
| Ultraspeed film has has the highest speed for the greatest reduction of radiation exposure. T/F | False, insight does |
| What is x-ray film sensitive to? | High temperatures, stray radiation and chemicals |
| What is another name for collimator? | Lead diaphragm |
| What is a focal spot? | Area on the tungsten target that electrons hit, and are transformed into photons |
| The molybdenum _________ ________ is on the cathode side of the x-ray tube. | Focusing cup |
| The electronic timer determines the quality of the x-ray. T/F | False, the kilovoltage determines the quality of an x-ray |
| The milliamperage determines the quantity of an x-ray. T/F | True |
| Radiation dissipates with time. | False, radiation is accumulative |
| What is the MPD per year for radiation workers? | 5 rems or .05 sieverts |
| What tissues and organs are most sensitive to radiation? | Bone marrow & reproductive cells to name a few |
| What is leakage radiation? | A form of radiation that escapes in all directions from the tube head. |
| What is scatter radiation? | Radiation that is deflected from it's path as it strikes matter. |
| Who invented the x-ray? | Wilhelm Conrad Roentgen |
| What film speed reduces developing time? | None |
| Dental Assistants should always fold the lead apron and put it away neatly. T/F | False, it should never be folded |
| Does the paralleling technique require a film holding device? | Yes |
| What is labial mounting? | The mounting dot being out toward the operator when mounting radiographs |
| What is a quality assurance program? | Routine procedures that have been established to ensure high quality and minimal risks to patients |
| Are imaging systems used by dentists? | Yes |
| State the parts of an x-ray from outside in | Outer package, black paper, dental film, black paper, lead foil backing & outer package |
Created by:
ddriggers
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