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M6W4
Radiation Basics
Question | Answer |
---|---|
What is a black region on an x-ray called? | radiolucent |
What is the imaginary plane that is from the bottom of the eye socket to the top of the ear? | Frankfort plane. |
What is vertical angulation? | Angulation from top to bottom. |
Where is intraoral film used? | Inside the mouth. |
What is a white or light region on the x-ray called? | radiopaque |
What is a pattern that results from placing the film backwards in the mouth called? | Herringbone pattern |
Where are the x-ray tube step-up and step-down transformers located? | In the tube head. |
Vertical angulation is left to right. T/F | False, horizontal angulation is left to right |
What is primary radiation also known as? | The central beam. |
A bitewing shows the entire area and surrounding surfaces. T/F | False, a PA or periapical shows the entire tooth and surrounding surfaces. |
What is overlapping a result of? | Improper horizontal angulation. |
What is it called when x-rays are processed in a manual tank? | Manual processing |
Double exposure is radiographs that are reproduced on specialized film. T/F | False, duplicating is radiographs that are reproduced on specialized film. |
What is a measurement unit for electrical current? | mA or milliamperage |
What is thermionic emission? | The process of heating a current to allow electrons to be given off. |
Double exposure is a technique error in which the film was exposed twice. T/F | True, double exposure is a technique error in which the film was exposed twice. |
The image of a tooth is shortened. | Foreshortening |
Is overlapping an area an anode that the electrons hit? | No, the focal spot is the are on the anode that the electrons hit. |
What makes the image of a tooth appear longer than it actually is? | Elongation |
What is cell division in the sex cells? | Mitosis |
What is the second chemical solution used to process radiographs? | Fixer solution |
Is the topographic technique used to diagnose TMJ disease? | MRI, or magnetic resonance imaging is used to diagnose TMJ disease. |
Leakage radiation is deflected from it's path as it strikes matter. T/F | Flase, scatter radiation is deflected from it's path as it strikes matter. |
What are wavelengths that have high frequency, penetrating power and energy? | Short wavelengths have high frequency, penetrating power and energy. |
What is automatic processing? | Processing or developing x-rays using automated equipment. |
Kodak Ultra Speed has the highest speed for the greatest reduction in radiation to the patient. T/F | False Kodak insight has highest speed for the greatest reduction in radiation to the patient. |
Hydroquinone blackens the silver halide crystals in the developer. T/F | True, hydroquinone blackens the silver halide crystals in the developer. |