GXMO TEST REVIEW QUESTIONS AND
ANSWERS
The American Registry of Radiologic Technologists (ARRT) was put in place to - Answer-established
standards and examinations to certify technologists. and maintains a lists of registered technologists.
The American Society of Radiologic Technologists (ASRT) are a - Answer-Professional organization
continuing education promoting research and guidelines for radiography instruction
The A.L.A.R.A concept.... - Answer-1. All exposure must have a benefit
2. All exposures ALARA
3. Dose levels should remain below
4. Maximum allowed
5. (Ten Commandments)
Position patient and equipment for procedure (Digital) - Answer-positions patient body part
positions image receptor
positions x-ray machine
Apply lead shielding to protect patient
,What are some of the duties of a limited radiography+ - Answer-Evaluate radiographic images and send
to physician for interpretation
Ensure that all anatomy is included
ensure image is of acceptable quality
Thank the patient and give final instruction
escort patient to exit
A limited radiographer operates in what manner - Answer-operates in an ethical and legal environment
based upon the health care worker- patient relationship
being considerate, respectful, and maintaining patients privacy
What is a Control panel - Answer-The portion of the x-ray unit that contains the master switch, the
indicator light, the selector buttons, and the exposure button.
The light box helps by doing what - Answer-marking films after exposure but before processing
What form does some radiation go through the patient - Answer-absorbed, scattered, transmitted
Image receptor is what kind of devices - Answer-The device that receives the energy of the x-ray beam
and forms the image of the body part
Scatter radiation ( on a x-ray table) is what - Answer-A form of secondary radiation that occurs when an
x-ray beam has been deflected from its path by interaction with matter is called
Digital systems operate at what speed class? - Answer-have a much wider dynamic range (latitude) than
film screen systems resulting in fewer retakes
,What is a range of exposures the imaging system can receive and render as an image tone # - Answer-
digital receptors
What does digitization / to digitize do - Answer--assign a number to each pixel-assign a shade of grey to
each number
What has continuous variation with infinite possible values - Answer-analog information
What is a area of unsharpness at each image border due to focal spot source of radiation.i.e. soft tissues
edges around # - Answer-penumbra
What is caused by movement of the x-ray tube, the pt or IR during exposure-voluntary and involuntary
motion - Answer-motion unsharpness
If the increase in kVp what happen to attenuation # - Answer-it is decrease
What does differential attenuation mean - Answer-each tissue attenuates the beam differently or absorb
radiation differently
A variation in beam density as it passes thru pt is called what - Answer-subject contrast
low contrast has many what colors - Answer-shades of gray instead of black and white, -long scale
What does deviation index (DI) mean - Answer-variation from TEI (Target Exposure Index) or the amount
of underexposure or overexposure
What is meant by the exposure indicator - Answer-a numeric representation of the quantity of exposure
received by a digital image receptor, and tells you whether or not the radiograph is over or under
exposed
, What is digital Imaging - Answer-a process through which a picture is converted into a series of square
electronic dots known as pixels
also a term is exposure indicator of the radiograph
The number of protons in the xray beam / mAs are called - Answer-quantity
MA definition - Answer-quantity per sec
If a focal spot size is smaller you will get what # - Answer-better sharpness
What is 54 V through tube circuit makes 54,000 V (54kV) - Answer-transferring volts
x-ray (outgoing current) has what - Answer-high voltage: 110 kV
current: 100 mA
DC current
x-ray Incoming current are - Answer-low voltage: 110 V
current: 100 A
AC current
Low voltage circuit is control by what # - Answer-Control Panel/ control circuit
A full wave rectification system has - Answer-requires 4 diodes
produces twice as much radiation per second as half wave rectified system
ANSWERS
The American Registry of Radiologic Technologists (ARRT) was put in place to - Answer-established
standards and examinations to certify technologists. and maintains a lists of registered technologists.
The American Society of Radiologic Technologists (ASRT) are a - Answer-Professional organization
continuing education promoting research and guidelines for radiography instruction
The A.L.A.R.A concept.... - Answer-1. All exposure must have a benefit
2. All exposures ALARA
3. Dose levels should remain below
4. Maximum allowed
5. (Ten Commandments)
Position patient and equipment for procedure (Digital) - Answer-positions patient body part
positions image receptor
positions x-ray machine
Apply lead shielding to protect patient
,What are some of the duties of a limited radiography+ - Answer-Evaluate radiographic images and send
to physician for interpretation
Ensure that all anatomy is included
ensure image is of acceptable quality
Thank the patient and give final instruction
escort patient to exit
A limited radiographer operates in what manner - Answer-operates in an ethical and legal environment
based upon the health care worker- patient relationship
being considerate, respectful, and maintaining patients privacy
What is a Control panel - Answer-The portion of the x-ray unit that contains the master switch, the
indicator light, the selector buttons, and the exposure button.
The light box helps by doing what - Answer-marking films after exposure but before processing
What form does some radiation go through the patient - Answer-absorbed, scattered, transmitted
Image receptor is what kind of devices - Answer-The device that receives the energy of the x-ray beam
and forms the image of the body part
Scatter radiation ( on a x-ray table) is what - Answer-A form of secondary radiation that occurs when an
x-ray beam has been deflected from its path by interaction with matter is called
Digital systems operate at what speed class? - Answer-have a much wider dynamic range (latitude) than
film screen systems resulting in fewer retakes
,What is a range of exposures the imaging system can receive and render as an image tone # - Answer-
digital receptors
What does digitization / to digitize do - Answer--assign a number to each pixel-assign a shade of grey to
each number
What has continuous variation with infinite possible values - Answer-analog information
What is a area of unsharpness at each image border due to focal spot source of radiation.i.e. soft tissues
edges around # - Answer-penumbra
What is caused by movement of the x-ray tube, the pt or IR during exposure-voluntary and involuntary
motion - Answer-motion unsharpness
If the increase in kVp what happen to attenuation # - Answer-it is decrease
What does differential attenuation mean - Answer-each tissue attenuates the beam differently or absorb
radiation differently
A variation in beam density as it passes thru pt is called what - Answer-subject contrast
low contrast has many what colors - Answer-shades of gray instead of black and white, -long scale
What does deviation index (DI) mean - Answer-variation from TEI (Target Exposure Index) or the amount
of underexposure or overexposure
What is meant by the exposure indicator - Answer-a numeric representation of the quantity of exposure
received by a digital image receptor, and tells you whether or not the radiograph is over or under
exposed
, What is digital Imaging - Answer-a process through which a picture is converted into a series of square
electronic dots known as pixels
also a term is exposure indicator of the radiograph
The number of protons in the xray beam / mAs are called - Answer-quantity
MA definition - Answer-quantity per sec
If a focal spot size is smaller you will get what # - Answer-better sharpness
What is 54 V through tube circuit makes 54,000 V (54kV) - Answer-transferring volts
x-ray (outgoing current) has what - Answer-high voltage: 110 kV
current: 100 mA
DC current
x-ray Incoming current are - Answer-low voltage: 110 V
current: 100 A
AC current
Low voltage circuit is control by what # - Answer-Control Panel/ control circuit
A full wave rectification system has - Answer-requires 4 diodes
produces twice as much radiation per second as half wave rectified system
