Chapter 1 Test Flashcards
A battery stored on a shelf is an example of what?
a.) kinetic energy
b.) potential energy
c.) inertia
d.) stable energy
b.) potential energy
500 mA @ _________ ms = 70 mAs
140 ms
A person running is an example of which type of energy?
a.) kinetic
b.) potential
a.) kinetic
Another name for a severe radiation burn is acute radiodermititis.
a.) true
b.) false
a.) true
In terms of radiation measurement, which of the following are considered standard units? Choose all that apply.
a.) columb/kilogram
b.) rem
c.) reontgan
d.) curie
e.) rad
f.) seivert
b.) rem
c.) reongtan
d.) curie
e.) rad
The smaller the area of x ray exposure, the lower the patient dose.
a.) true
b.) false
a.) true
Which of the following will decrease patient dose?
a.) maximize time
b.) minimize patient protection
c.) minimize distance
d.) maximize distance
d.) maximize distance
In einsteins formula, E= mc^2 the c stands for which of the following?
a.) the theory of relativity
b.) mass energy equivalence
c.) acceleration of mass
d.) force
e.) the speed of light
e.) the speed of light
Decreasing beam restriction has no affect on patient dose.
a.) true
b.) false
b.) false
200 mA @ 0.07 s= __________ mAs
14 mAs
Who was Thomas edisons assistant that eventually lost his life for his part in x ray experimentation?
a.) clarence dally
b.) albert einstein
c.) wilhelm roengtan
d.) henri baquerel
a.) clarence dally
The negative electrode of the xray tube is the :
a.) cathode
b.) anode
c.) canode
d.) diode
a.) cathode
The tube head assemply consists of:
a.) tube stand
b.) xray tube
c.) collimator
d.) all of the above
d.) all of the above
One of the cardinal principles of radiation protection states that the radiologic technologist should minimize which of the following?
a.) time
b.) shielding
c.) distance
d.) kvp
e.) mas
a.) time
Exposure times for very early radiographs ranged from:
a.) 20 minutes to 2 hours
b.) 2 hours to 5 hours
c.) 1 minute to 15 minutes
d.) 1 second to 5 seconds
a.) 20 minutes to 2 hours
The first radiograph produced by DR. Roentgen was of
a.) his wifes hand
b.) his neighbors dog
c.) his daughters hand
d.) his assistants hand
a.) his wifes hand
There are _________ kilograms in 1 pound.
a.) 2.5
b.) 2.2
c.) 3.2
d.) 1.2
b.) 2.2
A meaure of the gravitational force extended on a body is quantified by which unit?
a.) power
b.) kilogram
c.) pound
d.) velocity
c.) pound
Which of the following is a primary barrier in an xray room?
a.) the door to the room
b.) the wall behind the tube
c.) the floor below the exam table
d.) the radiographers glass window
c.) the floor below the exam table
A floor mounted xray tube stand is best suited for high volume hospitals.
a.) true
b.) false
b.) false
Permanently installed equipment consist of units on wheels that cen be taken to a patients bedside.
a.) true
b.) false
b.) false
If 20 kg of water freezes, how many kg will the ice weigh?
a.) 20 kg
b.) 10 kg
c.) 3 kg
d.) 5 kg
a.) 20 kg
Gray is the SI equivalent of RAD.
a.) true
b.) false
a.) true
In the SI system, the unit of measure for length is:
a.) meter
b.) mile
c.) kilometer
d.) foot
a.) meter
Electromagnetic, chemical, electrical and thermal are all types of:
a.) ionizing radiation
b.) energy
c.) waves
d.) non ionizing radiation
b.) energy
The british system unit of measure for mass is:
a.) ton
b.) gram
c.) pound
d.) kilogram
c.) pound
Which of the following is the required lead or lead equivalent for a primary barrier in an xray room?
a.) 1/25
b.) 1/32
c.) 1/16
d.) 1/3
c.) 1/16
The metric system is also known as the:
a.) british system
b.) french system
c.) system international (SI)
d.) system of units (SU)
c.) system international (SI)
An atomic clock is used to provide an accurate account of which unit of measurement?
a.) The system international (SI) unit of measure for time
b.) no correct answer
c.) all are correct
d.) the standard unit of measurement for time
e.) the british unit of measure for time
c.) all are correct
Which of the following are considered fundamental quantities?
a.) velocity, force, power
b.) work, energy, power and force
c.) mass length and time
d.) time, matter and space
c.) mass length and time
Heat is produced inside the xray tube in excess due to the fact that x ray production is an ineffiecent process.
a.) true
b.) false
a.) true
During Dr. Roentgens discovery of x light what is the material that fluoresced when he energized the cathode ray tube?
a.) tungsten
b.) barium plantinocyde
c.) acyrlic paint
d.) barium sulfate
b.) barium plantinocyde
The purpose of the mirror inside the collimator is to:
a.) reflect the light source
b.) focus the xray beam
c.) restrict the x ray beam
d.) allow the patient to see himself or herself
a.) reflect the light source
When screening for pregnancy, routine or elective radiographic exams should be limited to which of the following?
a.) during the onset of menstration
b.) 10 days following the onset of menstration
c.) early trimester
d.) 10 days before the onset of menstration
b.) 10 days following the onset of menstration
An example of how xrays were used for entertainment or business gain in a dangerous manner was the:
a.) x ray stove polish
b.) fluoroscopic show fitter
c.) x ray headache tablets
d.) x ray golf balls
b.) fluoroscopic shoe fitter
Choose all that apply.
a.) xray are affected by electric or magnetic fields
b.) xrays can be focused by a lens
c.) xrays travel at the speed of light
d.) xrays travel in straight lines
c.) xrays travel at the speed of light
d.) xrays travel in straight lines
1.5 sec = ________ ms
1500
In a typical radiographic room, the anode is located:
a.) over the head end of the table
b.) over the foot end of the table
c.) within the control panel
d.) in the middle of the table
a.) over the head end of the table
When the distance between the x ray source and radiographer increases, the effective dose to the radiographer will:
a.) decrease
b.) no chance
c.) increase
a.) decrease
Which of the following are considered derived quantities? Choose all that apply.
a.) acceleration
b.) force
c.) velocity
d.) length
a.) acceleration
b.) force
c.) velocity
Which of the following is the required lead or lead equivalent for a secondary barrier in an xray room?
a.) 1/32
b.) 1/25
c.) 1/16
d.) 1/3
a.) 1/32
According to the basic principles of radiation protection, a radiographer should minimize what?
a.) sheilding
b.) time
c.) patient protection
d.) distance
b.) time
In the early 1900s where might you find a fluoroscopic apparatus being used for the general public?
a.) apothecary
b.) shoe store
c.) clothing store
d.) market
b.) shoe store
Einsteins formula E=MC^2 demonstrates the relationship between
a.) matter and energy
b.) mass and electromagnetic energy
c.) energy and electricity
d.) electricity and mass
a.) matter and energy
Choose all that apply.
a.) xrays travel at the speed of light
b.) xrays are electrically neutral, therefore unaffected by electric or magnetic fields
c.) xrays release small amounts of heat when passing through matter
d.) xrays can ionize matter
e.) xrays travel at half the speed of light
a.) xrays travel at the speed of light
b.) xrays are electrically neutral, therfore unaffected by electric or magnetic fields
c.) xrays release small amounts of heat when passing through matter
d.) xrays can ionize matter
Xrays were discovered:
a.) december 8, 1895
b.) december 8, 1805
c.) november 8, 1985
d.) november 8, 1895
d.) november 8, 1895
To help dissipate heat produced during xray production the xray tube housing is filled with:
a.) tungsten
b.) air
c.) oil
d.) water
c.) oil
The speed of light can be quantified as 3 x 10^8 m/s.
a.) true
b.) false
a.) true
___________ is the push or pull that changes the motion of the object.
a.) velocity
b.) force
c.) momentum
d.) acceleration
b.) force
Radiation with sufficeint energy to detach an electron from an atom describes:
a.) radiation therapy
b.) electromagnetic radiation
c.) ionizing radiation
d.) ion pair
c.) ionizing radiation
Energy in a stored state is:
a.) potential energy
b.) power
c.) kinetic energy
d.) energy in motion
a.) potential energy
In the SI system, the unit of measure for time is:
a.) second
b.) day
c.) hour
d.) minute
a.) second
Which of the following early pioneers developed the fluoroscope?
a.) wilhelm roentgen
b.) alexander bell
c.) william crookes
d.) thomas edison
e.) jj thompson
d.) thomas edison
Anything that occupies space, has form, shape and mass is called:
a.) mass
b.) weight
c.) matter
d.) energy
c.) matter
In an xray department you should always strive to follow what important principle?
a.) ARRLA
b.) ARALA
c.) ALARA
d.) AARAL
c.) ALARA
Velocity is a measure of what?
a.) inertia
b.) speed
c.) stamina
d.) acceleration
b.) speed
The intensity or quantity of radiation diminishes over distance.
a.) true
b.) false
a.) true
The property of an object with mass that resists a change in its state of motion is:
a.) inertia
b.) momentum
c.) power
d.) energy
a.) inertia
1 inch is equal to how many centimeters?
a.) 2.45 cm
b.) 2 cm
c.) 2.54cm
d.) 2.40 cm
c.) 2.54cm
The positive electrode of the xray tube is the:
a.) canode
b.) cathode
c.) anode
d.) diode
c.) anode
Newtons first law of motion states that unless acted on by an external force, an object at rest does waht/
a.) will stay at rest
b.) will move very slowly
c.) none of the above
d.) will accelerate very quickly
a.) will stay at rest
A fluoroscope apparatus is a device that allows dynamic xray examination using xrays and a fluorcent screen.
a.) true
b.) false
a.) true
The device that restricts the xray beam to the area of interest is the:
a.) tube housing
b.) crosshair
c.) collimator
d.) mirror
c.) collimator
Which tube stand configuration is the most versatile design and the most widely used in todays hospital setting?
a.) wall mount
b.) floor ceiling mount
c.) floor mount
d.) ceiling mount
d.) ceiling mount
Exposure, dose, and dose equivalent are:
a.) fundamental quantities
b.) derived quantities
c.) specific to SI units
d.) radiologic quantities
d.) radiologic quantities
Who discovered xrays?
a.) wilhelm roentgen
b.) clarence dally
c.) thomas edison
d.) albert einstein
a.) wilhelm roentgen
The device is located just under the xray table and holds the image receptor in place is the:
a.) exit assembly
b.) bucky assembly
c.) grid assembly
d.) floating assembly
b.) bucky assembly
lead shutters are part of the:
a.) collimator
b.) tube housing
c.) xray tube
d.) tube stand
a.) collimator
Xrays have a constant velocity.
a.) true
b.) false
a.) true
Early cathode ray tubes were very efficient and attributed to minimal patient dose.
a.) true
b.) false
b.) false
A radiographers dosimetry report is expressed in?
a.) mrem
b.) mr
c.) mci
d.) mrad
a.) mrem
1 kilohertz (kHz) is equal to:
a.) 1000000 hertz
b.) 100 hertz
c.) 1000000 herts
d.) 1000 hertz
d.) 1000 hertz
In order reduce occupational dose during a portable radiographic of the chest, the technologist should:
a.) stand several feet away from the patient during the exposure
b.) decrease the exposure time and increase techniques
c.) apply lead sheilding over the patients pelvis
d.) apply a grid to the image receptor
a.) stand several feet away from the patient during the exposure
