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GXMO STUDY GUIDE ACTUAL EXAM WITH
CORRECT ACTUAL QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST 2025 ALREADY GRADED A+
increasing the SID; maintaining the small focal spot - ANSWERS-When a largeOID is used, recroded detail can be improved by:
decreased contrast - ANSWERS-Fog affects radiographic quality by causing detail - ANSWERS-Motion of the patient, either voluntary or involuntary, duringthe exposure will result in decreased
quantum mottle - ANSWERS-A term used to describe a grainy or mottled image mAs - ANSWERS-Radiographic density is primarily controlled by adjusting the step-up transformer - ANSWERS-What device is not located within the controlconsole
Scope of practice is limited - ANSWERS-The term limited operator is usedbecause the
Reciprocity - ANSWERS-Credentials issued in one area are recognized in another Radiologist, obstetrician, pediatrician - ANSWERS-Physicians that have receivedextensive additional training and would be considered a specialist
A radiologist - ANSWERS-A specialist who interprets radiographs and performsspecial imaging procedures is called
A physician - ANSWERS-An order for an x-Ray examination is issued by Explain the procedure and the preparation to the patient; position the patientcorrectly in relation to the film and the x-Ray tube - ANSWERS-What are the duties of a limited operator ASRT - ANSWERS-The largest professional organization for radiologictechnologists is the
ASRT - ANSWERS-The curriculum for limited x-Ray machine operators ispublished by the
Solid; liquid - ANSWERS-Considered a basic form of matter Mass - ANSWERS-The quantity of matter that makes up any physical object iscalled the
Electron - ANSWERS-Located in an orbit around the nucleus of an atom Electron - ANSWERS-Has a negative electric charge Roentgen - ANSWERS-X-rays were discovered by Organization that accredits schools for radiologic technologists - ANSWERS-Thejoint review committee on education in radiologic technology (JRCERT) is the
Limited operator - ANSWERS-Another term that has the same meaning aspractical radiographer is
True - ANSWERS-To determine the credentials needed for you to practicelimited radiography, you should contact the appropriate state agency
Neutrons; protons - ANSWERS-Considered fundamental particles of atoms
Ionized - ANSWERS-When a neutral atom gains or loses an electron, the atom issaid to be
Potential energy - ANSWERS-Mechanical energy can be classified as eitherkinetic energy or
Electromagnetic energy - ANSWERS-X-rays consist of Wavelength - ANSWERS-X-rays with greater energy have a shorter ____and aremore penetrating
Gamma rays - ANSWERS-What has the shortest wavelengths They are highly penetrating and invisible; they cause certain crystals tofluoresce; they travel in straight lines at the speed of light - ANSWERS-Accurate statements regarding the characteristics of x-rays Photon - ANSWERS-The smallest possible unit of electromagnetic energy is the Electric circuit - ANSWERS-The term for a continuous path of flow of the electriccharges from the power source through one or more electric devices and back to the source is
Space Charge - ANSWERS-An "electron cloud" surrounding the filament of thecathode is referred to as a
target - ANSWERS-Free electrons for x-ray production come from the thermoionic emission - ANSWERS-The creation of the space charge in the x-raytube produces
Bremsstrahlung interactions - ANSWERS-The majority of photons in the x-raybeam are created by which process?
heat - ANSWERS-More than 99%of the energy of the electron stream isconverted into
greater dissipation of heat from high technical factors - ANSWERS-The high -speed roatation (10,000 rpm) of the anode enables:
size of the actual and effective focal spot - ANSWERS-The degree of angulationof the x-ray tube target will determine the
two filaments; two focal spot sizes - ANSWERS-A dual-focus x-ray tube has: uneven distribution of radiation within thex-ray field - ANSWERS-The anodeheel effect is a phenomenon of x-ray production that results in:
head is toward the cathode end of the tube - ANSWERS-To take advantage ofthe anode heel effect when making a radiograph of the femur in recumbent anteroposterior projection on a 35 x 43 cm image recemptor (IR)at a 40-inchsource-image distance (SID) the patient shouldbe placed so that the:
kVp - ANSWERS-The penetrating power of the x-ray beam is controlled byvarying the
milliamperes - ANSWERS-The rate of current flow across the x-ray tube ismeasured in
Increased patient dose; twice as much photons in the x-ray beam; increasedradiographic denisity - ANSWERS-Doubling the mA will result in:
milliampere-seconds - ANSWERS-The unit used to indicate the total quantity ofx-ray exposure is
4 - ANSWERS-An x-ray exposure is made using the following factors: 200 mA,0.02 seconds, 70 kVp, 40 inches SID. The value of the mAs for the exposure is:
filter - ANSWERS-The device for removing long-wavelength radiation from theprimary x-ray beam is the:
grid or Bucky - ANSWERS-The device that protects film from being fogged byscatter radiation is called a
collimator - ANSWERS-The device that allows the limited operator to vary thesize of the radiation field is called the
prevent accidental exposure of co-workers - ANSWERS-The purpose of a safetycheck performed before making an exposure is to
throughout the room during an exposure - ANSWERS-A radiation hazard existsin the x-ray room
computed radiography (CR) - ANSWERS-A type of fimless x-ray system thatproduces digital images is called
mAs - ANSWERS-The unit used to indicate the total quantity of x-rays in anexposure is
Incrased mA; Increased exposure time; Decreased source-image distance (SID) -ANSWERS-Which of the following will result in increased radiographic density
tissue density - ANSWERS-The mass density of the body part is referred to as
mAs - ANSWERS-The primary controller of radiographic density is contrast - ANSWERS-The difference in radiographic density between any twoadjacent portions of the image is called
kVp - ANSWERS-The primary factor controlling radiographic contrast and x-raypenetration is
a short scale of contrast - ANSWERS-High contrast produced by low kVp resultsin an image with
fog - ANSWERS-Generalized unwanted exposure on the image is called increased magnification - ANSWERS-A decrease in SID will result in distortion - ANSWERS-a misrepresentation in the size or shape of the structurebeing examined is called:
penumbra - ANSWERS-The "fuzzy" unsharpness at the edges of structures orbody parts is called
less, greater - ANSWERS-The smaller the effective focal spot, the ______ thepenumbra, and the ___________ the recorded detail
back-up timer - ANSWERS-If the AEC fails during the exposure, the ______ willterminate the exposure
Warm up the anode; Do not make repeated exposures near the tube limits -ANSWERS-Which of the following steps should be used to extend x-ray tube life? 3640 HU - ANSWERS-How many heat units (HU) are generated using a high-frequency generator at 200 mA, 0.10 sec, and 85 kVp?
Automatic exposure control (AEC); Anatomically programmed radiography(APR) - ANSWERS-For which type of x-ray generator can the exposure factors from the technique chart be programmed into the system +5% - ANSWERS-For exposure times longer than 10 milliseconds, the maximumvariability of the timer must be maintained within:
False - ANSWERS-Public Law 90-602 states that enerators must terminate theexposure time at 400 mAs
False - ANSWERS-When carrying out quality control of the kVp on the generator,the maximum variability has to be maintained within +10%
True - ANSWERS-The shortest exposure time and lowest dose to the patient isobtained using high-frequency generators
HU=mA x Time x kVp x 1.35 - ANSWERS-The heat unit (HU) formula for three-phase x-ray generator is:
