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RADIATION PROTECTION (EXAM 1) CH - 1, 2, 3 & 4 QUESTIONS WITH CORRECT ANSWERS
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RADIATION PROTECTION (EXAM 1) CH - 1, 2, 3 & 4 QUESTIONS WITH CORRECT ANSWERS
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RADIATION PROTECTION (EXAM 1) CH -1, 2, 3 & 4 QUESTIONS WITH CORRECT
ANSWERS
X-rays are - Answer-a form of ionizing radiation
When passing through matter, ionizing radiation does what - Answer-produces
negatively and positively charged particles (ions) that cause harm to biological tissues
What are the six consequences of ionization in human cells - Answer--creation of
unstable atoms
-production of free electrons
-production of low energy x-ray photons
-creation of reactive free radicals capable of producing substances poisonous to the cell
-creation of new biologic molecules detrimental to the living cell
-injury to the cell that may manifest itself as abnormal function or loss of function
Effective measures employed by radiation workers to safeguard patients, personnel,
and the general public from unnecessary exposure to ionizing radiation - Answer-
radiation protection
Electromagnetic radiation in the form of waves - Answer-radiant energy
How is radiant energy emitted from the tube - Answer-in form of waves (or particles)
How can we safely control the use of radiant energy - Answer-by using knowledge of
radiation induced hazards gained many years ago, and by employing effective methods
to limit or eliminate those hazards; selecting the right equipment and technique
The use for safeguarding against significant and continued radiation exposure is based
on - Answer-evidence of harmful biological effects
Any radiation exposure that does not benefit a person in terms of diagnostic information
obtained for the clinical management of medical needs or any radiation exposure that
does not enhance the quality of the study - Answer-unnecessary exposure to ionizing
radiation
Degree to which a diagnostic study reveals the presence or absence of disease in the
patient - Answer-Diagnostic efficacy
Risk (in general terms) - Answer-the probability of injury, ailment, or death resulting from
an activity
, Risk (in the medical industry) - Answer-the possibility of inducing a radiogenic cancer or
genetic defect after irradiation
BERT (Background Equivalent Radiation Time) - Answer--method used to reduce
patient fears and anxiety
-compares the amount of radiation received with natural background radiation received
over a given period of time
Electromagnetic waves are characterized by - Answer-frequency and wavelength
What are forms of ionizing radiation - Answer-x-rays, gamma rays, and high energy
ultraviolet radiation
Chest - Answer-10 days (BERT value)
C Spine - Answer-2 wk (BERT value)
T Spine - Answer-6 mo (BERT value)
L Spine - Answer-1 yr (BERT value)
Upper GI Series - Answer-1.5 yr (BERT value)
Lower GI Series - Answer-2 yr (BERT value)
Skull - Answer-11 day (BERT value)
Hip - Answer-7 wk (BERT value)
Pelvis - Answer-4 mo (BERT value)
Abdomen - Answer-4 mo (BERT value)
Limbs and joints (except hip) - Answer-<1.5 days (BERT value)
CT Brain - Answer-1 yr (BERT value)
CT Chest - Answer-3.6 yr (BERT value)
CT Abdomen/pelvis - Answer-4.5 yr (BERT value)
TRACE (Tools for Radiation Awareness and Community Education) includes what two
things - Answer-1. Formulating new policies and procedures to promote radiation safety
and the implementation of patient and community education
2. Technologic enhancements
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