Term
| The purposes of radiation are: |
|
Definition
1) to protect the patient
2) to the protect the operator
3) to protect the auxillary personnel |
|
|
Term
| To avoid gonadal exposure to x-rays, which of the following should be used? |
|
Definition
|
|
Term
| the three basic factors in radiation protections are? |
|
Definition
|
|
Term
| the first exposure time was approximately? |
|
Definition
|
|
Term
| in 1895 wilhem conrad roentgen discovered? |
|
Definition
|
|
Term
| when exposing a radiograph, the operator should stand? |
|
Definition
| at least 6 feet from the x-ray head |
|
|
Term
| the body structure(s) most sensitive to ionizing radiation is: |
|
Definition
|
|
Term
| the cells of a body least susceptible to radiation x-rays are: |
|
Definition
|
|
Term
| the recommended collimation of the radiation beam at the patient's skin surface is? |
|
Definition
|
|
Term
| the amount of radiation is a type of: |
|
Definition
| cummulative in the entire body |
|
|
Term
| scattered radiation is a type of: |
|
Definition
|
|
Term
|
Definition
a) stray radiation
b) secondary radiation
c) the primary beam |
|
|
Term
| which cells are most sensitive to the x-rays? |
|
Definition
|
|
Term
| the first clinical sign of x-ray dermatitis is: |
|
Definition
|
|
Term
| the lead diaphragm determines the size and shape of the : |
|
Definition
|
|
Term
| the minimum lead apron standards are: |
|
Definition
| at least 1x2 foot in size, 0.24 mm of lead |
|
|
Term
| through collimation the primarty x-ray beam should not exceed____inches in diameter |
|
Definition
|
|
Term
| what is the most effective shield in blocking or attenuating x-rays? |
|
Definition
|
|
Term
| what eliminates the weaker rays? |
|
Definition
|
|
Term
|
Definition
| controls quantity of electrions |
|
|
Term
|
Definition
| measures the amount of radiation received for a give period of time |
|
|
Term
| in production of the x-rays which % of energy is converted into useful x-radiation? |
|
Definition
|
|
Term
| where does the electronic cloud form? |
|
Definition
|
|
Term
|
Definition
a) heating the cathode to a high temperature
b) rapidly moving electrons
c) speeding electrons bombarding a tungsten target |
|
|
Term
| the cathode is the ____ terminal |
|
Definition
|
|
Term
| the anode is the_____terminal |
|
Definition
|
|
Term
| which type of film can be used extraorally? |
|
Definition
|
|
Term
|
Definition
a) shows entire tooth
b) shows the area surrounding the apex
c) comes in various sizes |
|
|
Term
| which extraoral radiograph shows one entire side of the skull? |
|
Definition
|
|
Term
| what is the size of most commonly usef intraoral film? |
|
Definition
|
|
Term
| what is placed in the film packet to protect from secondary radiation? |
|
Definition
|
|
Term
| what type of radiograph shows the crown portion of the maxillary and the mandibular posterior teeth and detects proximal caries? |
|
Definition
|
|
Term
| the five basic steps in processing x-ray films are: |
|
Definition
develop
rinse
fix
wash
dry |
|
|
Term
| what acts as the solvent in both the developer and the fixer? |
|
Definition
|
|
Term
| the ideal temperature range for the developer and fixer is: |
|
Definition
|
|
Term
| which of the following does not take place during the developing step: |
|
Definition
|
|
Term
| clean running water is used after developing and fixing to: |
|
Definition
remove most of the alkaline developer
reduce the change of contamination of fixed
remove any remaining fixing solution |
|
|
Term
| if a radiography remains in the developing solution too long, it will be: |
|
Definition
|
|
Term
|
Definition
more dense
don't allow the passage of x-rays
appear light (white) on radiograph
mental restorations |
|
|
Term
|
Definition
| a natural opening in the bone |
|
|
Term
| all dots must be either concave or convex in order to tell: |
|
Definition
|
|
Term
| foreshortening of the tooth in a radiograph results from: |
|
Definition
| the vertical angle being too high |
|
|
Term
| when the x-rays beams are not directed to the center of the film, leaving a portion of the film unexposed the result is: |
|
Definition
|
|
Term
| overlapping is a result of: |
|
Definition
| incorrect horizontal angulation |
|
|
Term
| in the paralleling technique the centrail ray is perpendicular to: |
|
Definition
the tooth (teeth)
the film packet |
|
|
Term
| blurred film can result from: |
|
Definition
|
|
Term
| which is the positve (+) degree angle used for? |
|
Definition
|
|
Term
| the dot on the film is placed towards what surface is the anterior and posterior teeth when taking PA's? |
|
Definition
| incisal or occlusal surface |
|
|
Term
|
Definition
| the curved boney eminence at distal end of maxillary alveolar ridge |
|
|
Term
|
Definition
| located along the roots of the maxillary bicuspid and molars |
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