RADT 146 Test 5 with correct answers

RADT 146 Test 5 with correct answers

•Filtration _______ patient exposure
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•Collimation ___________ patient exposure
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•Protective Apparel ______________ patient scatter radiation (not protective
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for. Primary beam)
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•Gonadal Shielding are provided for patients of ________
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•Protective Barriers _______ patient exposure
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•Image Receptor -
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•Film/Screens, Digital - Intensifying screens absorb low level x-ray energy and
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convert it to _____ - correct answer ✔decrease
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Decrease
Decreases
Child bearing age
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Decrease


Light energy (decrease exposure)
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Avoid exposing pregnant women who are still in their ________ - correct
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answer ✔First trimester (3months)
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Radiation in air is measured by ___________ - correct answer ✔Air Kerma,
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roentgens, gray(Gya)
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, radiation absorbed dose (rad) - correct answer ✔QUANTITY OF RADIATION OF
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ANY TYPE WHICH PRODUCES AN ENERGY TRANSFER OF 100 ERGS/GRAM IN
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ANY ABSORBING MATERIAL.
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1 RAD = 100 ERG/GM
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SI UNIT: GRAY (GYT)
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ROENTGEN (RADIATION) EQUIVALENT MAN / / /




REM - correct answer ✔Occupational exposure
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Dose equivalent (for the patient)
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SI unit: Seivert (Sv)
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Radioactivity - correct answer ✔That quantity of material in which 1
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disintegration (of nucleus) every second.
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(Radioactive Decay) /


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SI unit: Becquerel (Bq)h
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ALARA means - correct answer ✔As low as reasonably possible
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Reducing unnecessary patient dose - correct answer ✔Risk vs benefits;
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unnecessary orders for exams; routine chest and L Spine for pre-employment;
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routine chest for hospital admittance
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Repeat Exams (minimize. Best we can)
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#1 reason for repeat is _________ - correct answer ✔Digital imaging - no repeat
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for exposure correction
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