16052542
Descripción
Test por Kelly Kinsinger, actualizado hace más de 1 año
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Creado por Kelly Kinsinger
hace más de 5 años
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Pregunta 1
Pregunta
The ALARA principle is an anagram for:
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As low as reasonably achievable
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As little as roughly acceptable
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As little as realistically acceptable
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As less as reasonably achievable
Pregunta 2
Pregunta
Secondary or scattered radiation:
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Occurs between the x-ray tube and the patient
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Occurs after the primary beam has left the film
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Is the radiation from which the health care workers require protection
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When the x-ray photons leave the x-ray tube and travel through the filter
Pregunta 3
Pregunta
Photons:
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Lead to problems with the imaging systems.
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Can cause electric malfunctions when absorbed.
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Are absorbed by the patient’s body.
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Are the final beam affecting the x-ray film.
Pregunta 4
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Radioactivity occurs when:
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The patient ingests a liquid during a radiography examination
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The atom is unstable due to an imbalance of protons and neutrons
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The secondary radiation affects solid objects within the room
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The nucleus of one atom becomes unstable due to an imbalance of neutrons and protons
Pregunta 5
Pregunta
Radioisotopes are used in:
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Nuclear medicine studies
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Radiographic imaging
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Ultrasound examinations
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Computed tomography
Pregunta 6
Pregunta
Linear energy transfer defines:
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The rate of travel of an atom when it produces radiation.
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The amount of energy transferred during a radiograph.
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The amount of energy imparted to the target of an x-ray unit.
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High and low levels of energy of the patient during diagnosis.
Pregunta 7
Pregunta
Scattered radiation is:
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Increased with a decrease in kilovoltage.
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Increased with a decrease in milliamperage.
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Totally controlled by the filtration of the x-ray beam.
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Increased by an increase in kilovoltage.
Pregunta 8
Pregunta
Transmitted photons:
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Travel through the body in a uniform pattern.
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Are absorbed more in bones than they are in tissue.
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Are emitted from the body as scattered radiation.
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Carry an image of the tissue through which they have passed.
Pregunta 9
Pregunta
Radiation protection to the individual is important:
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Particularly during the time that a person may reproduce.
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During all phases of the life of males and females.
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Only to females of childbearing years.
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During the years of 15 to 45 for males only.
Pregunta 10
Pregunta
The fetus will be affected by radiation:
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During the last trimester only if the mother is not protected.
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Particularly during the first trimester (the 2nd to 10th weeks).
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Only if the exposure is directed specifically at the mother.
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Only during organogenesis and not after the second trimester.
Pregunta 11
Pregunta
Three methods of protection are time, distance, and shielding:
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Time measures the amount of exposure during the examination.
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Distance is the measurement of radiation from the patient to the veterinarian.
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Time is measured by the rate of motion within the patient.
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Distance is the measurement of the x-ray source to the subject.
Pregunta 12
Pregunta
The dose to the radiation worker increases:
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If the worker does not limit the time of his/her exposure
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If the worker does not monitor his/her movement in the room
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If all the radiation is directed toward a wall instead of a patient
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Once the barriers are in place and the radiation is turned on
Pregunta 13
Pregunta
Shielding involves the use of barriers to protect against ionizing radiation:
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Examples of shields are water, air, silver, and concrete
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Shields are barriers that are placed between the patient and the radiation
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Shielding materials are referenced to the thickness of lead
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Leaded shields can be placed in walls and later removed
Pregunta 14
Pregunta
Shielding of the imaging suite must be calculated:
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And installed prior to the use of the equipment
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Particularly if an ultrasound unit is to be installed
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Only if the room is to be used on a daily basis
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And approved by the facility administrator
Pregunta 15
Pregunta
Leaded gowns must be worn:
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Whenever the health care worker enters an imaging room.
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Once the radiography unit is turned on or is left on.
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By any health care worker who remains in an imaging room during radiography.
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By all staff during the x-ray examination.
Pregunta 16
Pregunta
The care of leaded aprons should include:
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Hanging the aprons and folding them when they are not in use.
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Cleaning the surfaces with strong solvents.
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Laying the aprons on flat surfaces or on cupboard shelves.
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Hanging them by the shoulders with no folds or creases.
Pregunta 17
Pregunta
A patient should be restrained during a radiographic procedure:
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To reduce the stress of the procedure
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To protect it from high radiation doses
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To encourage him/her to cooperate
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To reduce the radiation exposure to health care workers
Pregunta 18
Pregunta
Measurement of personal radiation is achieved using:
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A dosimeter and a radiation detector
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A dosimeter that is read on a regular basis
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Dosimeters and timed measurements only during radiography examinations
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A radiation monitor and a Geiger counter
Pregunta 19
Pregunta
Radiation workers should be equipped with a personal dosimeter:
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That should be worn at all times and stored at home
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That should be stored in a location where it will not be exposed to radiation
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That should be worn beneath the thyroid collar
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That can be shared with other workers intermittently
Pregunta 20
Pregunta
The personal dosimeter should be assigned to one individual:
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If that person works in two locations, it can be worn in both
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It must only be worn in one location and stored at that site
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It should be worn at or near the wrist
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It may be stored in the x-ray room close to the patients
Pregunta 21
Pregunta
Visitors and service personnel in the x-ray room:
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Should be advised to take precautions regarding radiation
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Must not be allowed near a radiation source
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Should be provided with personnel dosimeters
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Should bring their own dosimeters and log their own doses
Pregunta 22
Pregunta
Each facility that owns imaging equipment:
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Is responsible for posting the results of the dosimetry readings.
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Must train only the radiation workers in radiation protection.
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Must take responsibility for only the radiation workers in the imaging area.
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Must not allow health care workers to come into contact with x-rays.
Pregunta 23
Pregunta
Rules of use for the dosimeter:
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Are the same for non-radiation workers and radiation workers.
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Are not strict as for non-radiation workers.
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Only apply to workers in the radiography area.
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Apply only to radiation workers in a health care facility.
Pregunta 24
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Dose limits apply specifically to:
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Total radiation from any source and any event.
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Irradiation that affects the worker under his/her leaded apron.
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Include all radiation resulting from direct exposure.
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Irradiation resulting from the worker’s occupation.
Pregunta 25
Pregunta
The Occupational Health and Safety Act:
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Specifies that only radiation workers are protected from occupational hazards.
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Specifies that the employer is responsible for health care worker’ safety.
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Delineates the workers’ responsibilities to each other regarding safety.
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Suggests limits to safety regulations that were not covered previously.
Pregunta 26
Pregunta
Under the law the employer:
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Must appoint a safety officer who oversees safety and prepares written reports.
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Should appoint a safety committee and allow for time spent on projects.
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Should oversee the recommendations of each employee.
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Must organize safety regulations and protocols.
Pregunta 27
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It is the employer’s responsibility to instruct employees of:
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The risks of handling of all hazardous biological, physical, and chemical agents.
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All threats to the radiation workers for later reference.
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The handling, storage, and use of all potentially dangerous materials.
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All workers who may come into contact with any dangerous situations.
Pregunta 28
Pregunta
A medical monitoring program must be set up to:
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Record the exposure of any worker to potentially dangerous situations.
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Maintain records of exposure to any worker who is exposed to hazards.
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Limit the exposure of workers to potentially dangerous materials.
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Monitor the testing procedures to ensure the safety of the workers.
Pregunta 29
Pregunta
According to the Occupational Health and Safety Act, the employer must:
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Ensure that a consultant is in charge of all testing equipment.
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Provide proper training for safety devices and monitoring for all employees.
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Not inform workers of any potential danger in their workplace.
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Ensure that all workers are consulted on a daily basis.
Pregunta 30
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Protective barriers are placed in specific areas of the workplace:
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They may be removed and reassigned by the workers.
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They may be sent to other areas as long as they are designated.
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They must not be moved without written authority of the supervisor.
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The supervisor must provide adequate temporary protection.
Pregunta 31
Pregunta
When new or replacement equipment is installed in the workplace:
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The new equipment must be approved by the supervisor.
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Any replacement equipment must be in good working order.
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Any new or used equipment must meet the standards outlined in the act.
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Any used equipment must be accompanied by documentation.
Pregunta 32
Pregunta
Hazardous physical agents must be accompanied by:
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Good, clear, and basic instructions on their use.
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Hazardous signage and antidote symbols.
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Antidotes and protective devices.
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The best instructions on preventing accidents.
Pregunta 33
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Notices regarding any hazardous physical agents:
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Must be written in French and English, and demonstrate clarity of symbols.
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Should describe the chemical symbols of the thing.
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Should outline measures of protection.
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Must be written in English and whatever appropriate languages are prescribed.
Pregunta 34
Pregunta
The workplace health and safety committee should review:
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And identify hazardous situations in the workplace and establish programs to ensure the safety of the workers.
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Training of workers and operation of equipment annually.
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Workers and their licenses and make appropriate recommendations.
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Training semi-annually and make appropriate recommendations.
Pregunta 35
Pregunta
The irradiation of an x-ray worker:
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Shall not be permitted under any circumstances.
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Shall be limited to the irradiation resulting directly from their occupation.
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Must be permitted if medically necessary.
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Must be documented within appropriate dose limits.
Pregunta 36
Pregunta
All doses produced by an x-ray worker:
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Must be as low as reasonably achievable.
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May be in excess of allowable doses.
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Should not exceed the dose of the previous year.
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Should always be documented and reported.
Pregunta 37
Pregunta
The personal dosimeter assigned to a health care worker:
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Must be in compliance with any company specifications.
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Must be read regularly and the results must be posted.
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Is usually an indication that the health care worker will receive excess dose.
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Is only an indication of exposure and will not necessarily be accurate.
Pregunta 38
Pregunta
If a worker exceeds the allowable dose:
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The employer must note the dose and monitor the worker’s activity.
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The employer should report the dose and replace the dosimeter.
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The employer shall investigate the cause and report his/her findings.
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The worker must track the excess dose and reorganize his/her workload.
Pregunta 39
Pregunta
Where an accidental overexposure to a worker takes place, the employer:
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Shall immediately notify the Joint Health and Safety Commission.
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Must notify the facility administrator and the radiation protection officer.
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Shall notify the legal entity overseeing that country.
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Shall contact the Ministry of Labour and the Ministry of Health.
Pregunta 40
Pregunta
All employers are required by the act to:
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Notify the health care workers of potential injury due to radiation overdose.
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Notify the workers of their employment as an x-ray worker.
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Inform the workers of the dose limits and their potential dose.
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Inform the workers that all doses will be their own responsibility.
Pregunta 41
Pregunta
Every health care worker who assists with an x-ray procedure:
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Must be given instructions in writing to ensure compliance.
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Must be provided with appropriate and correct protection.
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May be given the leaded apron and gloves.
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May not need protection if he or she is within 10 feet of the source.
Pregunta 42
Pregunta
The competent person is assigned to:
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Maintain correct records of health care workers and their exposure to radiation.
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Maintain and monitor all equipment within the facility.
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Organize the workers according to the amount of dose they receive.
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Train the staff in the facility regarding radiation protection.
Pregunta 43
Pregunta
The owner of the radiation-emitting device must:
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Become the radiation protection officer.
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Keep track of all the equipment in the facility.
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Ensure that all radiation safety issues are addressed correctly.
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Not assign the designated competent person duties to another individual.
Pregunta 44
Pregunta
Standard patient exposure is measured in:
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Roentgens.
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RAD.
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Curie.
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REM.
Pregunta 45
Pregunta
The science of health physics developed radiation protocols that:
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Should be available in the patient waiting rooms.
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Should be available to every staff member and updated biannually.
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Should be compiled by the staff members.
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State that time, distance, and shielding are the three cardinal rules for radiation protection.
Pregunta 46
Pregunta
Inverse square law:
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Concerns the intensity of the radiation from a source.
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Concerns the use of binding energy calculations.
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Is practical only with visible light.
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Is useful only with high-energy photons.
Pregunta 47
Pregunta
Linear energy transfer (LET) is:
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The rate at which energy is transferred to the cell.
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The transfer of genetic material to the nucleus.
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The rate at which energy is deposited in matter.
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The rate at which tissues react to the deposition of radiation.
Pregunta 48
Pregunta
Latent periods may last as long as:
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Minutes
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Weeks
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Months
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Years
Pregunta 49
Pregunta
The radiation primarily effects:
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The critical target.
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The water surrounding the cell.
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The cytoplasm only.
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The nucleus only.
Pregunta 50
Pregunta
LET:
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Increases with decreasing penetrability.
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Increases with the increasing penetrability.
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Decreases with the decreasing penetrability.
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Decreases as the charge on the particle remains the same.
Pregunta 51
Pregunta
Stochastic effects:
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Are usually random in nature.
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Increase function as dose decreases.
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Decrease function as dose increases.
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Are specific and exhibit a threshold dose.
Pregunta 52
Pregunta
Patient exposure dose is measured in:
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Milliroentgens
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Grays
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Rads
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Rems
Pregunta 53
Pregunta
RADs are used to measure:
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Radiation dose to the skin.
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Radiation absorbed dose.
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Accumulated surface exposure.
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Radiation amassed dose.
Pregunta 54
Pregunta
The ALARA concept is used to protect:
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The patient.
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The veterinary staff.
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The general public.
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The technologist.
Pregunta 55
Pregunta
The type of cell division that genetic cells undergo is:
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Meiosis
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Mitosis
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Genome
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Duplication
Pregunta 56
Pregunta
Which of the following is most important in protecting a patient?
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Low kVp, high mAs; 72"distance
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High kVp, low mAs; 40" distance
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Low kVp, low mAs; 20" distance
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High kVp, low mAs; 72" distance
Pregunta 57
Pregunta
Which of the following tissues are most radiosensitive?
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Bone marrow in the arm
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Muscle tissue in the leg
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Tissue of the small intestine
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Nervous tissue of the brain
Pregunta 58
Pregunta
A technician receives a dose of 15 mR/hour at 2 feet from the source. How would that dose change if he doubled his distance from the source?
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Increase by two times
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Increase by four times
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Decrease by two times
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Decrease by four times
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