Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

RADIATION PROTECTION > FINALS L1 & L2 > Flashcards

FINALS L1 & L2 Flashcards

1
Q

Dose limit for Occupational Radiation Exposure

A

20 mSv / yr

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

General X-ray activity must ______

A

Not Exceed 1 mSv / yr

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

It contributes to the highest occupational exposure of diagnostic x-ray personnel.

A

Fluoroscopy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Personnel exposure is ________ related to the x-ray beam on-time.

A

Directly

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

An X-ray tube over the table is advantageous in terms of _______

A

Image Quality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

An X-ray tube over the table is disadvantageous in terms of higher personnel exposures, mainly due to (2):

A
  1. High Levels of Scatter Radiation
  2. High Levels of Leakage Radiation
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

It is best to position the x-ray tube _______ during mobile and C-arm fluoroscopy

A

Under the Patient

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What modality contributes to higher personnel exposure due to longer fluoroscopic x-ray beam on-time ?

A

Interventional Radiology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Higher exposures in IR are also caused by what other two factors ?

A
  1. Absence of Protective Curtain
  2. Use of Cineradiography
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Dose limit for IR

A

500 mSv / yr

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

________ must be provided for interventional radiologists

A

Extremity Monitoring

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Which modality manifests low personnel exposures due to low kVp operation ?

A

Mammography

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Low kVp operation = ______

A

Less Scatter Radiation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Which modality manifests low personnel exposures due to fine collimation and sole presence of secondary radiation in the examination room ?

A

Computed Tomography

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Occupational exposure for nursing personnel and others working in the operating room and ICU is ______

A

Near Zero

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

TRUE OR FALSE

It is necessary to provide occupational radiation monitors for OR / ICU personnel

A

FALSE

It is NOT necessary to provide occupational radiation monitors for OR / ICU personnel

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which contributes to the highest occupational exposure of diagnostic x-ray personnel ?

A

Mobile Radiology

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Who are the people that should wear occupational radiation monitor (4):

A
  1. Radiologic Technologist
  2. Anyone who is required to immobilize or hold patients.
  3. Personnel who regularly operate C-arm fluoroscope
  4. Personnel who are regularly in the immediate vicinity of C-arm fluoroscope
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

The dose of radiation that would be expected to produce no significant radiation effects

A

Maximum Permissible Dose (MPD)

20
Q

It is specified only for occupational exposure and serves as a replacement for MPD

A

Dose Limit (DL)

21
Q

Current DL = _____

A

1 mSv / Week

22
Q

NCRP DL Recommendations:

Annual Effective Dose for Occupational Exposures = ________

A

50 mSv

23
Q

NCRP DL Recommendations:

Cumulative Dose for Occupational Exposures = ________

A

10 mSv x age

24
Q

NCRP DL Recommendations:

Occupational equivalent annual dose for Lens of the Eye = ______

A

150 mSv

25
Q

NCRP DL Recommendations:

Occupational equivalent annual dose for Thyroid, Skin, Hands, and Feet

A

500 mSv

26
Q

Annual Negligible Individual Annual Dose

A

0.01 mSv

27
Q

Radiation Weighting Factor:

X and gamma rays, electrons

A

1 Wf

28
Q

Radiation Weighting Factor:

10 keV - 100 keV & >2 MeV - 20 MeV

A

10 Wf

29
Q

Radiation Weighting Factor:

> 100 kev - 2 MeV

A

20 Wf

30
Q

Radiation Weighting Factor:

Protons

A

2 Wf

31
Q

Radiation Weighting Factor:

Alpha Particles

A

20 Wf

32
Q

Radiation Weighting Factor:

> 20 MeV

A

5 Wf

33
Q

Enumerate Various Tissues with their corresponding Tissue Weighting Factor (12) :

A
  1. Gonad = 0.20
  2. Active Bone Marrow = 0.12
  3. Colon = 0.12
  4. Lung = 0.12
  5. Stomach = 0.12
  6. Bladder = 0.05
  7. Breast = 0.05
  8. Esophagus = 0.05
  9. Liver = 0.05
  10. Thyroid = 0.05
  11. Bone Surface = 0.01
  12. Skin = 0.01

RATIONALE MNEMONICS:
0.20 (Gago)
0.12 (Ang - Cringe - Lung - Sobra)
0.05 (Bo - Bo - Easy - Liver - Talaga)
0.01 (Bull - Shit)

34
Q

The pregnancy period most sensitive to radiation exposure occurs _______

A

Before Birth

35
Q

Least hazardous period of radiation exposure during pregnancy

A

1st to 2nd Week

36
Q

Biologic response to occur in 1st to 2nd Week of Pregnancy

A

Resorption of the Embryo

37
Q

The 2nd to 10th Week of Pregnancy is called as the period of _____ wherein the major organs of the fetus are developing,

A

Major Organogenesis

38
Q

The principal response during the 2nd and 3rd Trimesters of pregnancy is ______

A

Malignant Disease during Childhood

39
Q

Spontaneous abortion after irradiation during the first 2 weeks of pregnancy is unlikely at radiation doses _____

A

< 25 rad

40
Q

A 1 % increase in congenital abnormalities is estimated to follow a fetal dose of _____

A

10 rad

41
Q

Administrative protocols to garner patient information, to ensure the prevention of the irradiation of patients who are pregnant include (3):

A
  1. Elective Booking
  2. Patient Questionnaires
  3. Posting
42
Q

The most direct way to ensure against the irradiation of an unsuspected pregnancy by determining the time of the patient’s previous menstrual cycle

A

Elective Booking

43
Q

TRUE OR FALSE

The patient, herself, may indicate her menstrual cycle

A

TRUE

44
Q

These are utilized when neither elective booking nor request forms seems appropriate for a diagnostic imaging service

A

Posting / Posting Signs / Post Signs

45
Q

Three options often considered for pregnant medical radiation workers (3):

A
  1. No Change in Assigned Working Duties
  2. Change to Another Area Where the Radiation Exposure may be Lower
  3. Change to a Job that has Essentially No Radiation Exposure

RADIATION PROTECTION (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2025 Bold Learning Solutions. Terms and Conditions