Test
Vet 302 Radiography Chapter Three
Preguntas del test (58)
1The ALARA principle is an anagram for:
- AAs low as reasonably achievable
- BAs little as roughly acceptable
- CAs little as realistically acceptable
- DAs less as reasonably achievable
2Secondary or scattered radiation:
- AOccurs between the x-ray tube and the patient
- BOccurs after the primary beam has left the film
- CIs the radiation from which the health care workers require protection
- DWhen the x-ray photons leave the x-ray tube and travel through the filter
3Photons:
- ALead to problems with the imaging systems.
- BCan cause electric malfunctions when absorbed.
- CAre absorbed by the patient’s body.
- DAre the final beam affecting the x-ray film.
4Radioactivity occurs when:
- AThe patient ingests a liquid during a radiography examination
- BThe atom is unstable due to an imbalance of protons and neutrons
- CThe secondary radiation affects solid objects within the room
- DThe nucleus of one atom becomes unstable due to an imbalance of neutrons and protons
5Radioisotopes are used in:
- ANuclear medicine studies
- BRadiographic imaging
- CUltrasound examinations
- DComputed tomography
6Linear energy transfer defines:
- AThe rate of travel of an atom when it produces radiation.
- BThe amount of energy transferred during a radiograph.
- CThe amount of energy imparted to the target of an x-ray unit.
- DHigh and low levels of energy of the patient during diagnosis.
7Scattered radiation is:
- AIncreased with a decrease in kilovoltage.
- BIncreased with a decrease in milliamperage.
- CTotally controlled by the filtration of the x-ray beam.
- DIncreased by an increase in kilovoltage.
8Transmitted photons:
- ATravel through the body in a uniform pattern.
- BAre absorbed more in bones than they are in tissue.
- CAre emitted from the body as scattered radiation.
- DCarry an image of the tissue through which they have passed.
9Radiation protection to the individual is important:
- AParticularly during the time that a person may reproduce.
- BDuring all phases of the life of males and females.
- COnly to females of childbearing years.
- DDuring the years of 15 to 45 for males only.
10The fetus will be affected by radiation:
- ADuring the last trimester only if the mother is not protected.
- BParticularly during the first trimester (the 2nd to 10th weeks).
- COnly if the exposure is directed specifically at the mother.
- DOnly during organogenesis and not after the second trimester.
11Three methods of protection are time, distance, and shielding:
- ATime measures the amount of exposure during the examination.
- BDistance is the measurement of radiation from the patient to the veterinarian.
- CTime is measured by the rate of motion within the patient.
- DDistance is the measurement of the x-ray source to the subject.
12The dose to the radiation worker increases:
- AIf the worker does not limit the time of his/her exposure
- BIf the worker does not monitor his/her movement in the room
- CIf all the radiation is directed toward a wall instead of a patient
- DOnce the barriers are in place and the radiation is turned on
13Shielding involves the use of barriers to protect against ionizing radiation:
- AExamples of shields are water, air, silver, and concrete
- BShields are barriers that are placed between the patient and the radiation
- CShielding materials are referenced to the thickness of lead
- DLeaded shields can be placed in walls and later removed
14Shielding of the imaging suite must be calculated:
- AAnd installed prior to the use of the equipment
- BParticularly if an ultrasound unit is to be installed
- COnly if the room is to be used on a daily basis
- DAnd approved by the facility administrator
15Leaded gowns must be worn:
- AWhenever the health care worker enters an imaging room.
- BOnce the radiography unit is turned on or is left on.
- CBy any health care worker who remains in an imaging room during radiography.
- DBy all staff during the x-ray examination.
16The care of leaded aprons should include:
- AHanging the aprons and folding them when they are not in use.
- BCleaning the surfaces with strong solvents.
- CLaying the aprons on flat surfaces or on cupboard shelves.
- DHanging them by the shoulders with no folds or creases.
17A patient should be restrained during a radiographic procedure:
- ATo reduce the stress of the procedure
- BTo protect it from high radiation doses
- CTo encourage him/her to cooperate
- DTo reduce the radiation exposure to health care workers
18Measurement of personal radiation is achieved using:
- AA dosimeter and a radiation detector
- BA dosimeter that is read on a regular basis
- CDosimeters and timed measurements only during radiography examinations
- DA radiation monitor and a Geiger counter
19Radiation workers should be equipped with a personal dosimeter:
- AThat should be worn at all times and stored at home
- BThat should be stored in a location where it will not be exposed to radiation
- CThat should be worn beneath the thyroid collar
- DThat can be shared with other workers intermittently
20The personal dosimeter should be assigned to one individual:
- AIf that person works in two locations, it can be worn in both
- BIt must only be worn in one location and stored at that site
- CIt should be worn at or near the wrist
- DIt may be stored in the x-ray room close to the patients
21Visitors and service personnel in the x-ray room:
- AShould be advised to take precautions regarding radiation
- BMust not be allowed near a radiation source
- CShould be provided with personnel dosimeters
- DShould bring their own dosimeters and log their own doses
22Each facility that owns imaging equipment:
- AIs responsible for posting the results of the dosimetry readings.
- BMust train only the radiation workers in radiation protection.
- CMust take responsibility for only the radiation workers in the imaging area.
- DMust not allow health care workers to come into contact with x-rays.
23Rules of use for the dosimeter:
- AAre the same for non-radiation workers and radiation workers.
- BAre not strict as for non-radiation workers.
- COnly apply to workers in the radiography area.
- DApply only to radiation workers in a health care facility.
24Dose limits apply specifically to:
- ATotal radiation from any source and any event.
- BIrradiation that affects the worker under his/her leaded apron.
- CInclude all radiation resulting from direct exposure.
- DIrradiation resulting from the worker’s occupation.
25The Occupational Health and Safety Act:
- ASpecifies that only radiation workers are protected from occupational hazards.
- BSpecifies that the employer is responsible for health care worker’ safety.
- CDelineates the workers’ responsibilities to each other regarding safety.
- DSuggests limits to safety regulations that were not covered previously.
26Under the law the employer:
- AMust appoint a safety officer who oversees safety and prepares written reports.
- BShould appoint a safety committee and allow for time spent on projects.
- CShould oversee the recommendations of each employee.
- DMust organize safety regulations and protocols.
27It is the employer’s responsibility to instruct employees of:
- AThe risks of handling of all hazardous biological, physical, and chemical agents.
- BAll threats to the radiation workers for later reference.
- CThe handling, storage, and use of all potentially dangerous materials.
- DAll workers who may come into contact with any dangerous situations.
28A medical monitoring program must be set up to:
- ARecord the exposure of any worker to potentially dangerous situations.
- BMaintain records of exposure to any worker who is exposed to hazards.
- CLimit the exposure of workers to potentially dangerous materials.
- DMonitor the testing procedures to ensure the safety of the workers.
29According to the Occupational Health and Safety Act, the employer must:
- AEnsure that a consultant is in charge of all testing equipment.
- BProvide proper training for safety devices and monitoring for all employees.
- CNot inform workers of any potential danger in their workplace.
- DEnsure that all workers are consulted on a daily basis.
30Protective barriers are placed in specific areas of the workplace:
- AThey may be removed and reassigned by the workers.
- BThey may be sent to other areas as long as they are designated.
- CThey must not be moved without written authority of the supervisor.
- DThe supervisor must provide adequate temporary protection.
31When new or replacement equipment is installed in the workplace:
- AThe new equipment must be approved by the supervisor.
- BAny replacement equipment must be in good working order.
- CAny new or used equipment must meet the standards outlined in the act.
- DAny used equipment must be accompanied by documentation.
32Hazardous physical agents must be accompanied by:
- AGood, clear, and basic instructions on their use.
- BHazardous signage and antidote symbols.
- CAntidotes and protective devices.
- DThe best instructions on preventing accidents.
33Notices regarding any hazardous physical agents:
- AMust be written in French and English, and demonstrate clarity of symbols.
- BShould describe the chemical symbols of the thing.
- CShould outline measures of protection.
- DMust be written in English and whatever appropriate languages are prescribed.
34The workplace health and safety committee should review:
- AAnd identify hazardous situations in the workplace and establish programs to ensure the safety of the workers.
- BTraining of workers and operation of equipment annually.
- CWorkers and their licenses and make appropriate recommendations.
- DTraining semi-annually and make appropriate recommendations.
35The irradiation of an x-ray worker:
- AShall not be permitted under any circumstances.
- BShall be limited to the irradiation resulting directly from their occupation.
- CMust be permitted if medically necessary.
- DMust be documented within appropriate dose limits.
36All doses produced by an x-ray worker:
- AMust be as low as reasonably achievable.
- BMay be in excess of allowable doses.
- CShould not exceed the dose of the previous year.
- DShould always be documented and reported.
37The personal dosimeter assigned to a health care worker:
- AMust be in compliance with any company specifications.
- BMust be read regularly and the results must be posted.
- CIs usually an indication that the health care worker will receive excess dose.
- DIs only an indication of exposure and will not necessarily be accurate.
38If a worker exceeds the allowable dose:
- AThe employer must note the dose and monitor the worker’s activity.
- BThe employer should report the dose and replace the dosimeter.
- CThe employer shall investigate the cause and report his/her findings.
- DThe worker must track the excess dose and reorganize his/her workload.
39Where an accidental overexposure to a worker takes place, the employer:
- AShall immediately notify the Joint Health and Safety Commission.
- BMust notify the facility administrator and the radiation protection officer.
- CShall notify the legal entity overseeing that country.
- DShall contact the Ministry of Labour and the Ministry of Health.
40All employers are required by the act to:
- ANotify the health care workers of potential injury due to radiation overdose.
- BNotify the workers of their employment as an x-ray worker.
- CInform the workers of the dose limits and their potential dose.
- DInform the workers that all doses will be their own responsibility.
41Every health care worker who assists with an x-ray procedure:
- AMust be given instructions in writing to ensure compliance.
- BMust be provided with appropriate and correct protection.
- CMay be given the leaded apron and gloves.
- DMay not need protection if he or she is within 10 feet of the source.
42The competent person is assigned to:
- AMaintain correct records of health care workers and their exposure to radiation.
- BMaintain and monitor all equipment within the facility.
- COrganize the workers according to the amount of dose they receive.
- DTrain the staff in the facility regarding radiation protection.
43The owner of the radiation-emitting device must:
- ABecome the radiation protection officer.
- BKeep track of all the equipment in the facility.
- CEnsure that all radiation safety issues are addressed correctly.
- DNot assign the designated competent person duties to another individual.
44Standard patient exposure is measured in:
- ARoentgens.
- BRAD.
- CCurie.
- DREM.
45The science of health physics developed radiation protocols that:
- AShould be available in the patient waiting rooms.
- BShould be available to every staff member and updated biannually.
- CShould be compiled by the staff members.
- DState that time, distance, and shielding are the three cardinal rules for radiation protection.
46Inverse square law:
- AConcerns the intensity of the radiation from a source.
- BConcerns the use of binding energy calculations.
- CIs practical only with visible light.
- DIs useful only with high-energy photons.
47Linear energy transfer (LET) is:
- AThe rate at which energy is transferred to the cell.
- BThe transfer of genetic material to the nucleus.
- CThe rate at which energy is deposited in matter.
- DThe rate at which tissues react to the deposition of radiation.
48Latent periods may last as long as:
- AMinutes
- BWeeks
- CMonths
- DYears
49The radiation primarily effects:
- AThe critical target.
- BThe water surrounding the cell.
- CThe cytoplasm only.
- DThe nucleus only.
50LET:
- AIncreases with decreasing penetrability.
- BIncreases with the increasing penetrability.
- CDecreases with the decreasing penetrability.
- DDecreases as the charge on the particle remains the same.
51Stochastic effects:
- AAre usually random in nature.
- BIncrease function as dose decreases.
- CDecrease function as dose increases.
- DAre specific and exhibit a threshold dose.
52Patient exposure dose is measured in:
- AMilliroentgens
- BGrays
- CRads
- DRems
53RADs are used to measure:
- ARadiation dose to the skin.
- BRadiation absorbed dose.
- CAccumulated surface exposure.
- DRadiation amassed dose.
54The ALARA concept is used to protect:
- AThe patient.
- BThe veterinary staff.
- CThe general public.
- DThe technologist.
55The type of cell division that genetic cells undergo is:
- AMeiosis
- BMitosis
- CGenome
- DDuplication
56Which of the following is most important in protecting a patient?
- ALow kVp, high mAs; 72"distance
- BHigh kVp, low mAs; 40" distance
- CLow kVp, low mAs; 20" distance
- DHigh kVp, low mAs; 72" distance
57Which of the following tissues are most radiosensitive?
- ABone marrow in the arm
- BMuscle tissue in the leg
- CTissue of the small intestine
- DNervous tissue of the brain
58A 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?
- AIncrease by two times
- BIncrease by four times
- CDecrease by two times
- DDecrease by four times
Información
- Descripción
- Test sobre Vet 302 Radiography Chapter Three, creado por Kelly Kinsinger el 17/11/2018.
- Autor
- Kelly Kinsinger
- Idioma
- English
- Visitas
- 15
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