Chapter 1 Quiz Flashcards
To help dissipate heat produced during xray production, the xray tube housing is filled with:
a.) air
b.) tungsten
c.) water
d.) oil
d.) oil
In the early 1900’s where might you find a fluoroscope apparatus being used for the general public?
a.) clothing store
b.) shoe store
c.) market
d.) apothecary
b.) shoe store
1.5 sec = __________ ms
1500 ms
Energy in a stored state is:
a.) energy in motion
b.) potential energy
c.) power
d.) kinetic energy
b.) potential energy
The tube head assembly consists of
a.) xray tube
b.) collimator
c.) tube stand
d.) all of the above
d.) all of the above
500 mA @ ___________ ms = 70 mAs
140 ms
Gray is the SI equivalent of RAD.
a.) true
b.) false
a.) true
What is the acceleration of a javelin if the inital velocity is 0, the final velocity is 15 m/s and the time of travel is 3 seconds?
a.) 1 m/s
b.) 5 m/s
c.) 10 m/s^2
d.) 5 m/s^2
d.) 5 m/s^2
Newtons first law of motion states that unless acted on by an external force, an object at rest does what?
a.) will accelerate very quickly
b.) will move very slowly
c.) will stay at rest
d.) none of the above
c.) will stay at rest
In order to reduce occupational dose during a portable radiograph of the chest, the technologist should:
a.) apply lead sheilding over the patients pelvis
b.) stand several feet away from the patient during exposure
c.) stand to the side of the patients bed
d.) apply a grid to the image receptor
b.) stand several feet away from the patient during exposure
What is the velocity of a ball that takes 1 1/2 minutes to travel 20 meters?
a.) .067 m/s
b.) 4m/s
c.) 13.3 m/s
d.) 0.22 m/s
d.) 0.22 m/s
A person running is an example of which type of energy?
a.) potential
b.) kinetic
b.) kinetic
Which of the following is required lead or lead equivalent for a primary barrier in an xray room?
a.) 1/32
b.) 1/3
c.) 1/25
d.) 1/16
d.) 1/16
In the SI system the unit of measure for length is:
a.) foot
b.) mile
c.) kilometer
d.) meter
d.) meter
mAs controls the __________ of photons in the xray beam.
a.) inertia
b.) quantity
c.) quality
d.) penetrating power
b.) quantity
In terms of radiation measurement, which of the following are considered standard, or british units? Choose all that apply
a.) roentgan
b.) coloumb/kilogram
c.) rem
d.) suivert
e.) curie
f.) rad
a.) roentgan
c.) rem
e.) curie
f.) rad
Choose all that apply.
a.) xrays travel in straight lines
b.) xrays travel at the speed of light
c.) xrays are affected by electric or magnetic fields
d.) xrays can be focused by a lens
a.) xrays travel in straight lines
b.) xrays travel at the speed of light
A floor mounted xray tube stand is best suited for high volume hospitals.
a.) true
b.) false
b.) false
A floor mounted xray tube stand is best suited for high volume hospitals.
a.) true
b.) false
b.) false
Decreasing beam restriction has no affect on patient dose.
a.) true
b.) false
b.) false
500 mA @ _________ s = 70 mAs
0.14s
An atomic clock is used to provide an accurate account of which unit of measurement?
a.) the british unit of measure for time
b.) all are correct
c.) the standard unit of measure for time
d.) the system international (SI) unit of measure for time
e.) no correct answer
b.) all are correct
The device that restricts the xray beam to the area of interest is the:
a.) crosshair
b.) mirror
c.) tube housing
d.) collimatord
d.) collimator
The negative electrode of the xray tube is the:
a.) anode
b.) cathode
c.) diode
d.) canode
b.) cathode
Who was thomas edison assistant that eventullay lost his life for his part in xray experimentation?
a.) clarence dally
b.) albert einstein
c.) wilhelm roengtan
d.) henri bacquerel
a.) clarence dally
A fluoroscope apparatus is a device that allows dynamic xray examination using xrays and a fluorscope screen.
a.) true
b.) false
a.) true
If a person ran 100 meters in 10 seconds, what is their average velocity?
a.) 1000 m/s
b.) 10 m/s
c.) 15 m/s
d.) 90 m/s^2
b.) 10 m/s
How much work is done to move a patient 50 meters if a force of 10 N is applied?
a.) 500 J
b.) .2 J
c.) 300 J
d.) 5J
a.) 500J
The purpose of the mirror inside the collimator is to:
a.) restrict the xray beam
b.) focus the xray beam
c.) allow the patient to see himself or herself
d.) reflect the light source
d.) reflect the light source
The first radiograph produced by DR. roengtan was of:
a.) his assistants hand
b.) his wifes hand
c.) his neighbors dog
d.) his daughters hand
b.) his wifes hand
A batter stored on a shelf is an example of what?
a.) stable energy
b.) kinetic energy
c.) inertia
d.) potential energy
d.) potential energy
1 inch is equal to how many centimeters?
a.) 2 cm
b.) 2.45 cm
c.) 2.54 cm
c.) 2.54 cm
Exposure times for very early radiographs ranged from:
a.) 20 minutes to 2 hours
b.) 1 second to 5 seconds
c.)) 2 hours to 5 hours
d.) 1 minute to 15 minutes
a.) 20 minutes to 2 hours
According to the basic principles of radiation protection, a radiograph should minimize what ?
a.) distance
b.) sheilding
c.) time
d.) patient protection
c.) time
When were xrays discovered?
November 8, 1895
Who discovered xrays?
a.) clarence dally
b.) thomas edison
c.) wilhelm roengtan
d.) albert einstein
c.) wilhelm roengtan
Early cathode ray tubes were very effiecent and attributed to minimal patient dose.
a.) true
b.) false
b.) false
The speed of light can be quantified as 3 * 10^8 m/s.
a.) true
b.) false
a.) true
REM is the unit used for absorbed dose.
a.) true
b.) false
b.) false
1 kilohertz is equal to:
a.) 1000000000 hertz
b.) 1000000 hertz
c.) 100 hertz
d.) 1000 hertz
d.) 1000 hertz
anything that occupies space, has form, shape, and mass is called:
a.) matter
b.) mass
c.) energy
d.) weight
a.) matter
During Dr. Roentgens discovery of x light what is the material that fluoresced when the cathode ray tube was energized?
a.) acrylic paint
b.) barium sulfate
c.) barium platinocyanide
d.) tungsten
c.) barium platinocyanide
200 mA @ 0.07s = __________ mAs
14
Decreasing beam restriction has no affect on patient dose.
a.) true
b.) false
b.) false
