Radiation Protection in Medical Radiography - 9th Edition

RADIATION PROTECTION IN MEDICAL
RADIOGRAPHY - 9TH EDITION




1, 2, and 3 -
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answersA patient may choose to assume a relatively small statistical risk of exposure to ionizing ra
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diation for a physician to obtain essential diagnostic medical information when:
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1. Illness occurs
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2. Injury occurs
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3. A specific imaging procedure for health screening purposes is called for
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Radiation protection - rh rh




answersEffective measures employed by radiation workers to safeguard patients, personnel, and
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the general public from unnecessary exposure to ionizing radiation defines:
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BERT - rh




answersWhich of the following is a method that can be used to answer patients' questions about t
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he amount of radiation received from a radiographic procedure?
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As low as reasonably achievable (ALARA) -
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answersThe term optimization for radiation protection (ORP) is synonymous with which of the fol
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lowing?

,A reduction in patient radiation dose -
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answersMonitoring and reporting of patient dose for CT and interventional procedures can lead t
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o:



Exposure - rh




answersThe amount of ionization produced in the air when ionizing radiation is present is known
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as:



Diagnostic efficacy - rh rh




answersThe degree to which the diagnostic study accurately reveals the presence or absence of di
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sease in the patient while adhering to radiation safety guidelines defines which of the following te
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rms?



1⁄1000 of a sievert - answersThe millisievert (mSv) is equal to:
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1 and 2 only -
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answersAn effective radiation safety program requires a firm commitment to radiation safety by:
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1. Facilities providing imaging services
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2. Radiation workers
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3. Patientsrh




Higher effective dose than would an adult, but the image produced will appear to be of acceptable
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quality - rh




answersIf a child receives a dose of radiation in a CT scan where adult protocols are used, the child,
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because of being smaller in size, will receive a: rh rh rh rh rh rh rh rh




1, 2, and 3 - answersThe amount of radiation actually received by a patient from a diagnostic x-
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ray procedure may be indicated in terms such as:
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1. Entrance skin exposure (ESE), which includes skin and glandular dose
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2. Bone marrow dose
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, 3. Gonadal doserh rh




Ionization - rh




answersWhich of the following processes is the foundation for imaging of the interaction of x-
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rays with human tissue? rh rh rh




It was extremely difficult to measure the amounts of radiation people received. -
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answersWhy are the long-
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term effects, such as an increased incidence of cancer in the exposed population living near Japan'
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s Fukushima Daiichi Nuclear Plant, unable to be accurately determined?
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2.3 mSv - rh rh




answersAccording to the most recent available data from 2016, what is the radiation dose from na
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tural background radiation attributed to exposure from radon and thoron?
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B. Radioactive elements in the crust of the Earth and in the human body -
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answersWhich of the following are natural sources of ionizing radiation?
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A. Medical x-radiation and cosmic radiation
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B. Radioactive elements in the crust of the Earth and in the human body
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C. Radioactive elements in the human body and a diagnostic x-ray machine
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D. Radioactive fallout and environs of atomic energy plants
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B. A substantial decrease within a few days in the number of lymphocytes or white blood cells that
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are the body's primary defense against disease. -
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answersAn equivalent dose as low as 250 mSv delivered to the whole body may cause which of the
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following within a few days? rh rh rh rh rh




A. An increase in the number of lymphocytes in the circulating blood.
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B. A substantial decrease within a few days in the number of lymphocytes or white blood cells that
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are the body's primary defense against disease.
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