Luoroscopy ARRT Exam Actual UPDATED Exam 400

Luoroscopy ARRT Exam (Actual / ) UPDATED Exam 400 Questions And 100% Verified Correct Answers

what mag modes are available? - <<>>if you have a 16" II, you can have 12,9,6, and 4.5 "

Compton effect - <<>>hits the outer electron, incomplete transfer of energy, electron released and a low energy xray is deflected

photoelectric absorption - <<>>x-ray totally absorbed by inner shell electron, x-ray overcomes binding energy and knock out the electron and an outer shell electron takes it place. When the outer electron moves to its new place, a characteristic x-ray is formed

what is the product of photoelectric absorption? - <<>>electron flying , characteristic x-ray, and positive ion

LD 50/30 - <<>>whole body dose of radiation that can be lethal to 50% of the exposed population within 30 days

• 400-500 Rem (4-5 Sv) lethal with no treatment

- treatment : antibiotics fluids increase the survival rates by

80%

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types of Somatic effects - <<>>- prompt somatic effects occur right away such as temporary hair loss and skin redness -delayed somatic effects can occur years later such as cancer

Genetic effects - <<>>occur in offspring ; damage to fetus, sperm and egg

damage to the eye is what type of effects? - <<>>deterministic

threshold dose for cataracts - <<>>1.5 Gy (150 Rads)

types of eye damage you can get from radiation - <<>>cataracts, glaucoma , cancer, retinopathy

what organ receives the highest dose? - <<>>skin

dose for transient erythema - <<>>200 Rads

dose for transient epilation - <<>>300 Rads

dose for epilation and erythema to worsen - <<>>500-1000 rads

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dose for permanent epilation and skin peels - <<>>10-15 Gy

dose for moist/ dry desquamation ( skin peels off) to occur and lead to dermal necrosis - <<>>15 Gy +

true or false, skin reactions can occur weeks later rather than immediately after the esposure - <<>>true

fetal dose limit - <<>><1.00 mRem=1Rem if fetus receives 10,000mRem, risks for malformation cancer or retardation increase

Embryologic - <<>>fetal radiation dependent on gestational and amount of radiation dose

why are there radiation risks for the first trimester ? - <<>>-fetal growth is rapid, incidence of miscarriage is unknown since many are unaware they were pregnant but the rate is believed to be 25-50%

why are there radiation risks for the second trimester? - <<>>it is the most sensitive stage for detectable abnormalities

what growth happens during the second trimester? - <<>>-the growth rate of the fetus has slowed 3 / 4

-major organ systems are beginning to differentiate -congenital malformation and mental retardation can occur ( dose related threshold)

why are there radiation risks at the 3rd trimester? - <<>>organ systems have nearly formed and functioning , radiation dose doesn't usually result in organ malformation, however if a high dose of radiation ( over 50 Rem) is received it can result in a high depletion of the cell population

if fetal dose is less than 1000 mRem..... - <<>>there is no evidence to support increased incidence of any developmental effects

if fetal dose is 1000 -10,000 mRem....... - <<>>there is a low risk of the fetus developing congenital malformations, mental retardation , intrauterine growth retardation , and childhood cancer

if the fetal dose exceeds 10,000 mRem...... - <<>>there is a high risk of developing congenital malformations, mental retardation , intrauterine growth retardation , and childhood cancer

what is the recommended dose limit for embryo - <<>>0.10-0.20 Gy

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