The actual long-term health effects of a “dirty bomb” are likely to be:
catastrophic
maximal
minimal
nonexistent
minimal
In ______, a neutron transforms itself into a combination of a proton and an energetic electron.
alpha decay
beta decay
gamma decay
x-ray absorption
beta
Each fluorine-18 nuclear transformation by positron decay yields two highly penetrating ____-keV photons.
250
472
511
777
511
Radioactive material that is attached to or associated with dust particles or in liquid form on various surfaces defines the term radioactive:
contamination
dispersal device
fallout
syndrome
contamination
If enough explosives are used to spread radioactive material over a broad area, then radioactivity is ______ higher than background levels.
extremely hazardous and may be much
moderately hazardous and may be
slightly hazardous and may be only slightly
diluted and may not be much
diluted and may not be much
Diagnostic techniques in nuclear medicine typically make use of ______ radioisotopes as radioactive tracers.
long-lived
short-lived
very weak
potentially lethal
short-lived
Strontium-89 is a pure __________ emitter.
alpha
beta
gamma
x-ray
beta
During a radiation emergency, the dose limit for individuals engaging in lifesaving activities is _____ mSv (_____ rem) per event.
50; 5
100; 10
250; 25
500; 50
250; 25
During a radiation emergency, at a dose rate of _____ Sv/hr (_____ rem/hr), emergency personnel should await specific instructions from radiation experts on how to proceed.
0.1; 10
0.5; 50
1.0; 100
5.0; 500
0.1; 10
While a patient receiving iodine-131 (I-131) therapy is hospitalized, a large, ____-inch-thick rolling lead shield can be positioned between the patient and any attending personnel for protection.
up to 1
2
3
6
up to 1
The design of a ______ imaging suite involves significant radiation safety concerns.
diagnostic x-ray
computed radiography
computed tomography
positron emission tomography/computed tomography
positron emission tomography/computed tomography
Iodine-125 (I-125) in the form of titanium-encapsulated cylindrical seeds has been used quite extensively within the past decade to give a tumoricidal radiation equivalent dose to:
malignant brain tumors
malignant breast tumors
malignant lung tumors
prostate cancers that are confined within the prostate gland
prostate cancers that are confined within the prostate gland
Strontium is a member of the same family of elements in the periodic table as is:
calcium
carbon
sodium
potassium
calcium
Therapeutic radioisotopes are characterized by:
very short half-lives
half-lives that are exactly the same
relatively long half-lives
half-lives that remain constant for all eternity
relatively long half-lives
Tellurium-125 (Te-125) has _____ protons and _____ neutrons.
125; 125
75; 63
52; 73
45; 58
52; 73