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Bushong Ch 1
Radiologic Science
Question | Answer |
---|---|
A boulder sitting on top of a mountain is said to possess | potential energy |
Water and steam are different forms of | matter |
What is the largest source of natural environmental radiation? | radon |
What are examples of thermal energy? | boiling water, heated eye on a stove |
The first discovery of xrays occurred during the exposure of fluorescent material during experiments with a cathode tube, what is this material called? | barium platinocyonide |
What would be the work done if a force of 200 N is applied over a distance of 15 meters? | W=f*d 3000J |
The removal of an electron from an atom is called: | ionization |
What would constitute a source of man made radiation? | xrays, CT, fluoroscopy |
The person to receive credit for the discovery of x-rays is: | William Roentgen |
The year 1904 represents an important date in the history of radiography, which of the following applies? | Clarence Daly, Edison's assistant, first fatality from radiation |
Interpret the following; 600 mA @ 0.003 = | 1.8 mAs |
Mass is a quantity of matter, and weight is a quantity of matter with respect to | gravity |
What is the formula for velocity? | v=d/t |
Matter is a substance of | atoms and molecules that occupy space |
What are the three cardinal rules of radiography? | time, distance, shielding |
The ____________, is the unit of radiation used to describe the dose of ionizing radiation received by the technologist (occupational) otherwise known as effective dose. | sievert |
The basic quantities measured in mechanics are: | length mass and time |
What was the device Roentgen was using when he discovered x-rays? | Crookes tube |
Two objects of equal mass, must also have equal: | energy |
The Coolidge tube, a vacuum type x-ray tube was used along with the ________________ to provide more control over technical factors ( mAs & kVp) | Snook transformer |
X-ray tube voltages are measured in | kVp |
What is 98 degrees Fahrenheit converted to in degrees Celsius? | 36.6 |
What helps to minimize radiation exposure | X-ray beam filtration, x-ray beam collimation, protective apparel and barriers, fluoroscopic cumulative timer, and the protective tube housing. |