Rad Bio Final Review

Front 1

When the time spent in a higher radiation area is reduced or limited, occupational exposure:

Back 1

Is also reduced

Front 2

Back 2

2 only

Front 3

Back 3

1 mSv

Front 4

A spot film device protective curtain, or sliding panel, of a minimum thickness of 0.25 mm LED equivalent should normally be positioned between the fluoroscopist and the patient to intercept which of the following types of radiation?

Back 4

Scattered radiation ABOVE the table top

Front 5

Back 5

1 and 2 only

Front 6

Back 6

1 mSv 5 mSv

Front 7

For C-arm devices with similar fields of view, the dose rate to Personnel located within a meter of the patient is:

Back 7

Comparable to that of routine fluoroscopy

Front 8

What is the term for the proportional amount of time during which the X-ray beam is energized or directed toward a particular barrier?

Back 8

Use Factor

Front 9

Which of the following terms means "random in nature"?

Back 9

Stochastic

Front 10

If the intensity of the X-ray beam is inversely proportional to the square of the distance from The Source, how does the intensity of the X-ray beam change when the distance from the source of radiation and a measurement point is tripled?

Back 10

It decreases by a factor of 9 at the new distance.

Front 11

The effective dose (EfD) limiting system supersedes :

Back 11

the maximum permissible dose (MPD) system.

Front 12

In general, deterministic effects typically occur:

Back 12

Only after large doses of radiation are received

Front 13

Diagnostic Imaging Personnel receive the highest occupational exposure during which of the following procedures?

1. Fluoroscopy

2. Mobile radiography

3. Special procedures

Back 13

b. 1, 2, and 3

Front 14

If a child is placed in a CT scanner and adult Protocols are used:

Back 14

the child will receive a higher dose than the adult.

Front 15

The essential concept underlying radiation protection is that:

Back 15

Any organ in the human body is vulnerable to damage from exposure to ionizing radiation

Front 16

Determine the cumulative effective dose limit to the whole body of an occupationally exposed person who is 46 years old.

Back 16

460 mSv

Front 17

In the event that a pregnant patient is inadvertently irradiated:

Back 17

The radiologic physicists should perform the calculations necessary to determine fetal dose.

Front 18

Which part(s) of a diagnostic x-ray unit should a radiographer avoid touching while a radiographic exposure is in progress?

Back 18

b. Tube housing, collimator, and high-tension cables

Front 19

Which of the following is another term for the Use Factor (U)?

Back 19

Beam Direction Factor

Front 20

When automatic exposure control (AEC) is not used, then to ensure uniform selection of technical x-ray exposure factors, efficient Imaging departments:

Back 20

Use standardized technique charts for each xray unit

Front 21

Back 21

0.20 mSv

Front 22

Which of the following agencies was previously known as the Atomic Energy Commission?

Back 22

b. NRC

Front 23

When a pregnant patient must undergo a radiographic procedure, which of the following practices will minimize radiation exposure?

Back 23

d. A and C

Front 24

Back 24

10 times the occupationally exposed person's age in years

Front 25

Whenever scattered radiation decreases, the radiographer's exposure:

Back 25

decreases

Front 26

When whole-body occupational exposure is controlled by keeping the effective dose (EfD) well below the upper boundary limit, the possibility of inducing stochastic effects of radiation is:

Back 26

c. minimized

Front 27

Who should determine the exact shielding requirements for a particular Imaging facility?

Back 27

Medical physicist

Front 28

While standing behind the control Booth barrier, a radiographer makes a radiographic exposure. The x-rays scattered from the patient's body should.....

Back 28

Scatter a minimum of two times before reaching any area behind the control Booth barrier

Front 29

Which of the following adjustments in technical exposure factors decreases the production of scattered radiation?

Back 29

Increase kVp and decrease mAs in compensation

Front 30

In terms of Occupational risk, radiography may be compared with the occupational risk associated with which of the following?

Back 30

Other Industries considered reasonably safe, such as government and trade

Front 31

Back 31

All of the above

Front 32

Back 32

All of the above

Front 33

The maximum weekly permitted equivalent dose for a controlled area must not exceed:

Back 33

1 millisievert

Front 34

Back 34

d. 1, 2, and 3

Front 35

Which of the following is frequently a problem in diagnostic pediactric radiography?

Back 35

Patient motion

Front 36

Protective eye glasses with optically clear lenses should contain a minimal LED equivalent protection of of:

Back 36

0.35 mm

Front 37

During a radiographic examination, which of the following combinations of technical exposure factors and filtration reduce patient radiation dose?

Back 37

Higher kVp, lower mAs, increased filtration

Front 38

_______________ is the radiation output weighted time that the unit is actually delivering radiation during the week.

Back 38

Workload

Front 39

The ALARA concept presents an extremely conservative model with respect to the relationship between:

Back 39

Ionizing radiation and potential risk

Front 40

Secondary radiation includes:

1. Leakage radiation

2. Primary radiation

3. Scatter radiation

Back 40

d. 1 and 3 only

Front 41

The responsibility for maintaining radiation monitoring records for all personnel and for providing counseling for individuals who receive monitor readings in excess of allowable limits belongs to the the:

Back 41

Designated radiation safety officer of a health care facility

Front 42

During which of the following x-ray examinations should a radiographer always wear a thyroid Shield?

Back 42

Fluoroscopy and special procedures

Front 43

According to the American College of radiology (ACR) , abdominal radiologic examinations that have been requested after full consideration of the clinical status of a patient, including the possibility of pregnancy, need need:

Back 43

Not to be postponed or selectively scheduled

Front 44

Of the following radiologic procedures, which is(are) considered nonessential ?

Back 44

d. All of the above

Front 45

If the peak energy of the X-ray beam is 100k kVp, a protective lead apron must be the equivalent to at least which of the following measures?

Back 45

0.25 mm thickness

Front 46

In fluoroscopy, the amount of radiation that a patient receives is usually estimated by measuring the radiation exposure rate at tabletop and multiplying this by the:

Back 46

Fluoroscopy time

Front 47

Any image that must be performed more than once because of human or mechanical error during the production of the initial image is known as a repeat image. What effect does a repeat image have on the radiation dose received by the patient?

Back 47

The patient's skin and possibly the gonads receive a double radiation dose.

Front 48

When a radiologic technologist declares her pregnancy to her employer, which of the following is appropriate?

Back 48

She continues to perform her duties without interruption of employment, provided that she has received radiation safety counseling and follows established radiation safety practices.

Front 49

Back 49

C

Front 50

Back 50

C

Front 51

Back 51

A

Front 52

Back 52

b

Front 53

Back 53

d

Front 54

Back 54

c. Prophase

Front 55

Back 55

a

Front 56

Back 56

c. Anaphase

Front 57

Back 57

b

Front 58

Back 58

b

Front 59

Back 59

a. Programed cell death

Front 60

Back 60

c

Front 61

Back 61

a. Carcinogenic syndrome

Front 62

Back 62

a

Front 63

Back 63

a

Front 64

Back 64

a

Front 65

Back 65

c. Malignancy

Front 66

Back 66

c. Positrons

Front 67

Back 67

a

Front 68

Back 68

b. Bremsstrahlung

Front 69

Back 69

b. Atomic weight of an atom

Front 70

Back 70

d

Front 71

Back 71

d

Front 72

Back 72

c

Front 73

Back 73

d. Compton interaction

Front 74

Back 74

b. Radiographic contrast

Front 75

Back 75

b

Front 76

Back 76

d

Front 77

Back 77

c. 1 and 3 only

Front 78

Back 78

a

Front 79

Back 79

a

Front 80

Back 80

a. H2O2

Front 81

Back 81

d. 0 Gyt

Front 82

Back 82

a

Front 83

Back 83

c. 2 and 3 only

Front 84

Back 84

b. Increases

Front 85

Back 85

b

Front 86

Back 86

a. Initial stage

Front 87

Back 87

a. alopecia

Front 88

Back 88

b. Manifest illness

Front 89

Back 89

c

Front 90

Back 90

d

Front 91

Back 91

d. Death

Front 92

Back 92

d. Survival curve

Front 93

Back 93

b

Front 94

Back 94

d

Front 95

Back 95

d

Front 96

Back 96

d. Nonlinear, threshold

Front 97

Back 97

C. Cancer

Front 98

Back 98

d. 1 and 2 only

Front 99

Back 99

C. Wave-particle duality

Front 100

Back 100

A

Front 101

Back 101

D. 4 pCi/L

Front 102

Back 102

D

Front 103

Back 103

D. Smokers

Front 104

Back 104

C. Radon exposure

Front 105

Back 105

D. Radiation Dose

Front 106

Back 106

D

Front 107

Back 107

B. Four times

Front 108

Back 108

B. 1 and 3 only

Front 109

Back 109

D

Front 110

Back 110

B. Natural

Front 111

Back 111

C. Clarence Madison Dally

Front 112

Back 112

A. 15

Front 113

Back 113

C. 100 cGy.

Front 114

Back 114

D. 1 Gy

Front 115

Back 115

b. 3.5 rem

Front 116

Back 116

A

Front 117

Back 117

d. 1, 2, and 3

Front 118

Back 118

d. 1 and 3 only

Front 119

Back 119

A

Front 120

Back 120

B

Front 121

Back 121

A

Front 122

Back 122

D. 3 months

Front 123

Back 123

C

Front 124

Back 124

B

Front 125

Back 125

C

Front 126

Back 126

B. Increased sensitivity

Front 127

Back 127

C

Front 128

Back 128

C

Front 129

Back 129

B

Front 130

Back 130

C

Front 131

Back 131

b. Increased sensitivity

Front 132

Back 132

C

Front 133

Back 133

C

Front 134

Back 134

d. 1, 2, and 3

Front 135

Back 135

C

Front 136

Back 136

A

Front 137

Back 137

B and C

Front 138

Back 138

C

Front 139

Back 139

C

Front 140

Back 140

D

Front 141

Back 141

d. 1, 2, and 3

Front 142

Back 142

d. 1, 2, and 3

Front 143

Back 143

B

Front 144

Back 144

C. 400 rem

Front 145

Back 145

A. 100 person-sieverts

Front 146

Back 146

d. 20

Front 147

Back 147

B

Front 148

Back 148

A

Front 149

Back 149

A

Front 150

Back 150

c. 1, 2, and 5 only

Front 151

Back 151

A

Front 152

Back 152

d. 1, 2, and 3