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2473L > Assignment 2 WS > Flashcards

Assignment 2 WS Flashcards

1
Q

According to the Inter-Society Council for Radiation Oncology Blue Book, what does structure include

A

staff, equipment and facility

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2
Q

According to the Inter-Society Council for Radiation Oncology Blue Book, what does process cover

A

pre- and post-treatment evaluations and the actual treatment application

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3
Q

According to the Inter-Society Council for Radiation Oncology Blue Book, how is outcome documented

A

by the frequency of accomplishing stated objectives, usually tumor control, and by the frequency and seriousness of treatment-induced sequelae.

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4
Q

What is sequelae

A

an aftereffect of a disease, condition, or injury; a secondary result. (consequence of a previous disease )

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5
Q

What book, published in 2012, provides a blue print for contemporary radiation oncology facilities in terms of structure, process, and personnel requirements?

A

Safety Is No Accident: A Framework for Quality Radiation Oncology and Care

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6
Q

Who has the overall responsibility for the conduct of the entire radiation treatment process?

A

Radiation Oncologist

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7
Q

Calibration of radiation generators or sources is the exclusive responsibility of whom?

A

The medical physicist

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8
Q

Next to calibration and quality assurance of radiation equipment, what is the physicist’s role?

A

Treatment planning

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9
Q

What are the 5 categories that describe the roles and responsibilities of physicists?

A
  • Equipment (Teletherapy, Brachytherapy, Simulator)
  • Treatment Planning (Teletherapy and Brachytherapy)
  • Dosimetry
  • Radiation Protection
  • Academic / Administrative
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10
Q

The final treatment plan is approved by the____ _____ after discussing the plan with the ____.

A

Radiation oncologist, Physicist

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11
Q

Who controls the use of all reactor-produced materials (by product materials) in the U.S.?

A

U.S. Nuclear Regulatory Commission (USNRC)

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12
Q

Who regulates the use of naturally occurring radioactive materials (e.g. radium) and x-ray machines

A

individual states

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13
Q

New NRC regulations go through the usual _____ and ______ _____ process as is customary for the enactment of any federal regulation.

A

Public, congressional hearing

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14
Q

Who has the responsibility of implementing the radiation protection program

A

Radiation safety officer (RSO)

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15
Q

What must each medical institution licensee establish to oversee the use of byproduct material?

A

A radiation safety committee

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16
Q

What is a written directive

A

A prescription (written procedures for medical uses)

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17
Q

If, because of the emergent nature of the patient’s condition, a delay in order to provide a written directive would jeopardize the patient’s health, what is acceptable?

A

An oral directive

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18
Q

A written directive must be prepared within____ (what length of time?) of the oral directive.

A

48 hours

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19
Q

What is teletherapy?

A

External beam radiation therapy

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20
Q

For teletherapy, what must the written directive contain

A

The patient or human research subject’s name, the total dose, dose per fraction, number of fractions, and treatment site

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21
Q

What term has replaced the formerly used terms of “misadministration” and “recordable event

A

Medical event

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22
Q

What is byproduct material?

A

Radioactive material produced by a nuclear reactor; a radioisotope

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23
Q

Is an event that results from patient intervention considered a “medical event?”

A

No

24
Q

What is the definition of “effective dose equivalent?

A

The sum of the weighted dose equivalents for individual tissues or organs

25
Q

What is a “leaking sealed source?

A

a leaking sealed source would be defined as a radioactive material or byproduct whose material is escaping the capsule in which it is encased.

26
Q

How many Sieverts are in 5 rem

A

0.05 Sv

27
Q

How many Sieverts are in 50 rem

A

0.5 Sv

28
Q

The licensee authorized to use radiopharmaceuticals must possess a dose calibrator to measure activity administered to each patient. The calibrator must be checked for constancy of response, accuracy of calibration, linearity, and source geometry dependence. How long must the records of these checks be retained?

A

3 years

29
Q

The licensee must possess calibrated survey instruments. When must calibration of the survey meter be done?

A

a. Before the first use
b. Annually
c. Following repair

30
Q

How long must records of each survey instrument calibration be retained?

A

3 years

31
Q

Must the licensee leak test the source before its first use?

A

Yes, unless the licensee has a leak test certificate from the supplier

32
Q

How often must subsequent leak tests be performed

A

At intervals not to exceed 6 months.

33
Q

If the leakage test reveals the presence of 0.005 microcurie or more of removable contamination, what must happen?

A

The source must be withdrawn from use and appropriately stored.

34
Q

How often must the licensee conduct a physical inventory of all sources in possession and measure ambient dose rates?

A

Quarterly

35
Q

When can a patient who is administered a radiopharmaceutical be released from medical care

A

a. the measured dose rate at a distance of 1 m from the patient is less than 5 mrem/hour or,
b. the activity remaining in the patent is less than 30 microcurie.

36
Q

When can a patient who is administered a permanent brachytherapy implant be released from medical care?

A

Until the measured dose at a distance of 1 m from the patient is less than 5 mrem/hour.

37
Q

When can a patient with a temporary implant be released from medical care?

A

a. all sources have been removed, and

b. the patient is surveyed with a radiation detector to confirm that all sources have been removed.

38
Q

A licensee shall provide radiation safety instructions to all personnel caring for the patient undergoing implant therapy. How long must these instruction records be retained?

A

3 years

39
Q

Can a licensee house a patient receiving implant therapy in the same room as a patient who is not receiving radiation therapy?

A

No

40
Q

In the case of patients receiving brachytherapy, what must the sign posted on the patient’s door read

A

Radioactive materials

41
Q

Can individuals under the age of 18 visit a patient receiving brachytherapy?

A

Only on a patient-by-patient basis with the approval of the authorized user and the Radiation Safety Officer (RSO)

42
Q

If a patient receiving brachytherapy dies or has a medical emergency, who must be notified immediately?

A

Radiation safety officer

43
Q

In the case of a teletheraphy unit that contains a sealed source of cobalt-60 or cesium-137, what must be posted at the console?

A

Safety instructions that inform the operator of procedures to follow before turning the beam on, and an emergency procedure to follow in case of source movement failure

44
Q

What safety precautions are specific to the teletherapy room door?

A

a. Door interlocks that prevent the beam from turning on when the door is open, and b. Prevents the beam from turning back on after a door interlock interruption without closing the door and resetting the beam on at the console

45
Q

Are radiation therapists permitted to treat patients without a permanent radiation monitor?

A

No, a permanent radiation monitor must continuously monitor beam status.

46
Q

Are radiation therapists permitted to treat patients without equipment that allows for continuous observation of the teletherapy room from the console?

A

no

47
Q

A licensee shall perform full calibration measurements on the teletherapy unit if spot check measurements indicate that the output differs more than % from the output obtained at the last full calibration, corrected for radioactive decay.

A

5%

48
Q

When Does a licensee need to perform full calibration measurements on the teletherapy unit

A

a. after the source is replaced
b. after the teletherapy unit is relocated
c. after the teletherapy unit is repaired

49
Q

How often does a licensee need to perform full calibration measurements on the teletherapy unit?

A

At intervals not exceeding 1 year

50
Q

Does a licensee need to retain a record of each calibration for the duration of the teletherapy unit

A

yes

51
Q

In the case of malfunction of a safety mechanism, what must be done?

A

The licensee shall lock the control console in the off position and not use the unit until necessary repairs have been made.

52
Q

In the case of a teletheraphy unit that contains a sealed source of cobalt-60 or cesium-137, what must be done a) before medical use, b) after each installation of a teletherapy source, and c) after making any change for which an amendment is required?

A

The licensee shall perform a radiation survey of the facility.

53
Q

In rem, what is the maximum permissible whole-body exposure for individuals in the restricted area per calendar quarter?

A

1.25 rem

54
Q

In the unrestricted area, radiation levels must not exceed _____ mrem in any 1 hour, _____ mrem in any 1 week, and _____ in any 1 year.

A

In the unrestricted area, radiation levels must not exceed 2 mrem in any 1 hour, 100 mrem in any 1 week, and 0 .5 rem in any 1 year.

55
Q

In the case of a teletheraphy unit that contains a sealed source of cobalt-60 or cesium-137, a licensee shall have the teletherapy unit fully inspected and serviced at a minimum of once every ______ years.

A

5

2473L (2 decks)

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