BXMO EXAM STUDY GUIDE
Atom - Answers - Most basic building block of all matter, made up of protons neutrons
and electrons.
Photon - Answers - Smallest possible unit of electromagnetic energy; makes up of
radiation being; produced by bremsstrahlung or characteristic interactions.
Cathode - Answers - Negatively charged
Anode - Answers - Positively charged
Tungsten - Answers - Metal used because it has a high melting point
Focal spot - Answers - Target area on the anode where electrons hit
Glass envelope - Answers - Made a Pyrex glass house the cathode and anode
Focusing cup - Answers - Surrounds cathode a small and large tons and filaments
house focus direct aim electrons towards the anode.
Initial stage - Answers - Begins within 48 hours after exposure. Flu like symptoms set in
( nausea, fatigue, loss of appetite)
Latent stage - Answers - Last about a week initial symptoms disappear changes take
place internally
Manifest illness stage - Answers - The potential so no fever, infection, hemorrhage,
nausea, vomiting, shock and death may follow
Recovery stage - Answers - If those is not lethal body starts to heal may take weeks
Long term somatic effects - Answers - Latent effects, stochastic, repeat exposure. (
catarctogenesis, carcinogenesis, short life span)
Lethal dose - Answers - Radiation does that is fatal to 50% of irradiated human
population within 30 days is called LD 50/30
Quantum mottle - Answers - Caused by an adequate exposure technique.Can be
caused by low mas or kvp
Moire Pattern - Answers - Occurred when grid lines are not aligned correctly
Light spots - Answers - Caused by dust
, Scratches or tears - Answers - Caused by damage to CR plates
Extraneous line patterns - Answers - Caused by noise in the image reader
Fogging - Answers - Background or scatter radiation do to see our plates being more
sensitive
Equivalent dose - Answers - Pregnant female worker must not exceed 0.05 rem/month
and limit for 9 months pregnancy peroid=0.5 Rem
3 principle for protection - Answers - Time, distant and shielding
Air Karma-Roentgen - Answers - Measured with ionization chamber
Rad(radiation absorbed dose) - Answers - Gray(gy) 1 Roentgens, measure tissue dose
Rem( radiation equivalent) - Answers - Sievert(Sv) measure occupational dose
Roentgen - Answers - Radiation exposure in the air
Rad - Answers - Absorb dose
REM - Answers - Equivalent dose
ALARA - Answers - as low as reasonably achievable
Collimator - Answers - Best device for restricting the primary beam.
Positive beam limitation device
Filtration - Answers - Process of removing long wavelength photons from from x-ray
beam place infiltration materials between x-ray tube and patient to absorb long
wavelength photons
KVP - Answers - Density
Quality
Control the speed of electrons, energy of x-ray beam, and penetrating power
mAs - Answers - Controls total Quantity exposure
Exposure time - Answers - Quantity of x rays produced is directly proportional
LET - Answers - Energy is deposited in form of charged particles as it travels through
matter
RBE - Answers - dose of test radiation to the dose of 250 kev( standard)
Atom - Answers - Most basic building block of all matter, made up of protons neutrons
and electrons.
Photon - Answers - Smallest possible unit of electromagnetic energy; makes up of
radiation being; produced by bremsstrahlung or characteristic interactions.
Cathode - Answers - Negatively charged
Anode - Answers - Positively charged
Tungsten - Answers - Metal used because it has a high melting point
Focal spot - Answers - Target area on the anode where electrons hit
Glass envelope - Answers - Made a Pyrex glass house the cathode and anode
Focusing cup - Answers - Surrounds cathode a small and large tons and filaments
house focus direct aim electrons towards the anode.
Initial stage - Answers - Begins within 48 hours after exposure. Flu like symptoms set in
( nausea, fatigue, loss of appetite)
Latent stage - Answers - Last about a week initial symptoms disappear changes take
place internally
Manifest illness stage - Answers - The potential so no fever, infection, hemorrhage,
nausea, vomiting, shock and death may follow
Recovery stage - Answers - If those is not lethal body starts to heal may take weeks
Long term somatic effects - Answers - Latent effects, stochastic, repeat exposure. (
catarctogenesis, carcinogenesis, short life span)
Lethal dose - Answers - Radiation does that is fatal to 50% of irradiated human
population within 30 days is called LD 50/30
Quantum mottle - Answers - Caused by an adequate exposure technique.Can be
caused by low mas or kvp
Moire Pattern - Answers - Occurred when grid lines are not aligned correctly
Light spots - Answers - Caused by dust
, Scratches or tears - Answers - Caused by damage to CR plates
Extraneous line patterns - Answers - Caused by noise in the image reader
Fogging - Answers - Background or scatter radiation do to see our plates being more
sensitive
Equivalent dose - Answers - Pregnant female worker must not exceed 0.05 rem/month
and limit for 9 months pregnancy peroid=0.5 Rem
3 principle for protection - Answers - Time, distant and shielding
Air Karma-Roentgen - Answers - Measured with ionization chamber
Rad(radiation absorbed dose) - Answers - Gray(gy) 1 Roentgens, measure tissue dose
Rem( radiation equivalent) - Answers - Sievert(Sv) measure occupational dose
Roentgen - Answers - Radiation exposure in the air
Rad - Answers - Absorb dose
REM - Answers - Equivalent dose
ALARA - Answers - as low as reasonably achievable
Collimator - Answers - Best device for restricting the primary beam.
Positive beam limitation device
Filtration - Answers - Process of removing long wavelength photons from from x-ray
beam place infiltration materials between x-ray tube and patient to absorb long
wavelength photons
KVP - Answers - Density
Quality
Control the speed of electrons, energy of x-ray beam, and penetrating power
mAs - Answers - Controls total Quantity exposure
Exposure time - Answers - Quantity of x rays produced is directly proportional
LET - Answers - Energy is deposited in form of charged particles as it travels through
matter
RBE - Answers - dose of test radiation to the dose of 250 kev( standard)
