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RHS exam practice
| Question | Answer |
|---|---|
| the measurement of ionizing radiation exposure in the air is? | Roentgen |
| the body tissue most sensitive to x-ray is? | Lymphocyte(white blood cells) |
| when a tooth is knocked out of the mouth from an injury that is called? | Avulsion |
| if pt. is going through chemo, to take films, what do you need? | Pt. consent, clinical exam, DDS consent, and MD consent. |
| extra oral radiographs are use to evaluate impacted teeth, large lesions, and fractures of the mandible. | Lateral Jaw Projection |
| Somatic effects of radiation do NOT have damaging effects on | offspring |
| what radiation effects increase in severity as more radiation is absorbed by somatic cells? | nonstochastic |
| what decreases the amount of radiation on the tube head? | Intensifying screen |
| what prevents x-rays from escaping the tube head? | Leaded-glass housing |
| the cells that are damaged by way of absorption are | indirect |
| adult PA film size | 2 |
| longest film size | 3 |
| occlusal film size | 4 |
| PA size 2 film detect | periodontal disease |
| occlusal films detect | salivary stone in submandibular gland |
| Insufficient rinsing of processed radiographic film will result in a | Brownish-yellow stain on the radiograph |
| Improper horizontal angulation results in | interproximal area of the teeth to appear overlapped |
| when fixer solution level is too low | a straight BLACK line/border to appear on a radiograph |
| when developer solution level is too low | a straight CLEAR line/border to appear on a radiograph |
| compared to paralleling technique a DISADVANTAGE of bisecting angle technique is | image disortion |
| increased vertical angulation results in | foreshortening of maxillary |
| developing solution too WARM | radiograph appears dark |
| insufficient vertical angulation | Elongation |
| expired films | fogged |
| kVp controls | contrast speed |
| MA controls | the quantity of x-rays being emitted from tubehead |
| focal spot size influences | sharpness of the x-rays |
| voltage is? | measurement of force that refers to the potential def between 2 electrical charges |
| step wedge is? | used to demonstrate film contrast |
| who regulates the manufacturing and installation of x-ray equipment? | Federal gov. |
| If you decrease exposure time what happens | increases the density on duplicating film |
| carious lesions appear (decay) | Radiolucent |
| what mimics caries on interaoral radiographs | Root resorption |
| alveolar crest appears | pointed and sharp |
| dilaceration in an image indicates | root shaped is bent or curved |
| collimation | restrict size of beam |
| normalizing device used to monitor | developing strength |
| distorted image is caused by | improper angulation of central beam due to bending of film packet |
| lead-film image | the embossing pattern of lead-foil backing appears on radiograph. film is put in backwards. |
| blurred image | movement of patient, film, or tube |
| partial image | 1.improper alignment of central beam 2.failure of immerse the film completely in the developing solution 3. contact of film with another film during development |
| Overexposed film | appears to dark, caused by 1. too much radiation exposure 2. too much development time 3. developing solution too warm |
| underexposed films | appears too light 1. insufficient radiation exposure 2. insufficient development time 3. use of an overused developing solution 4. use of cold developing |
| radiopaque | appears white, shows 1. Dentin 2. Enamel 3. Bone |
| Radiolucent | appears Black, shows. 1. cyst 2. tumors 3. decay 4.sinuses 5. abcess 6. pulp 7. acrylics |
Created by:
Drude2012
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