GXMO REVIEW QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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Course
GXMO
Institution
GXMO
GXMO REVIEW QUESTIONS AND ANSWERS WITH SOLUTIONS 2024
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 Tech...
GXMO REVIEW QUESTIONS AND ANSWERS
WITH SOLUTIONS 2024
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
main switch does what - ANSWER the switch that generates the power to the x-ray tube
timer and exposure switch - ANSWER Allows the electrons to flow from the cathode to the anode for a
specific period of time. it is located on the primary side of the high voltage transformer. Mechanical.
Part which lets primary radiation leaves in all direction - ANSWER the x-ray tube
x-rays are absorbed, scattered, transmitted through who # - ANSWER the patient
remnant (transmitted primary radiation) radiation and forms latent (hidden) image - ANSWER The (IR)
Image receptor receives
exits x-rays tube via tube port directed toward patient - ANSWER What is the primary radiation #
emitted in all directions from the patient and x-rays - ANSWER What is scatter radiation
transmitted primary radiation directed toward the image receptor. (is scatter and transmitted radiation) -
ANSWER What is remnant radiation
Leakage radiation is emitted in all directions form the x-ray tube housing is called - ANSWER secondary
radiation
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