RECIT AND QUIZZES

Question 1

To keep it centered in the x-ray tube

Answer 1

charannn walang sagot

Question 2

It is concerned with providing occupational radiation protection and minimizing radiation dose to the public

Answer 2

Health Physics

Question 3

It is to ensure proper alignment of the x-ray beam and the IR.

Answer 3

Beam Alignment

Question 3

What is the lead equivalent for bucky slot cover

Answer 3

0.25 mm Pb

Question 4

It is the product of the maximum mA and the number of x-ray examinations performed

Answer 4

Workload

Question 4

It is a process of removing low energy rays result in a lower patient dose

Answer 4

Filtration

Question 4

What is the best way to reduce the production of scattered radiation?

Answer 4

Collimate

Question 5

What is the concept of ALARA

Answer 5

As Low As Reasonably Achievable - to less the radiation to the patient

Question 6

What is the single most important scattering object in both radiography and fluoroscopy

Answer 6

Patient

Question 6

Give 3 cardinal principles

Answer 6

Time, Distance and Shielding

Question 7

Define controlled area

Answer 7

Area occupied primarily by radiology personnel and patients

Question 7

What type of collimator will automatically restrict the x-ray beam w/the size of the image cassette for the image receptor

Answer 7

Positive Beam Limitation (PBL)

Question 8

What is the 2 sources of secondary radiation

Answer 8

Scatter and Leakage Radiation

Question 8

What is the minimum total filtration inherent plus added required for x-ray equipment producing 70 kv

Answer 8

2.5 mm Al

Question 8

To be in compliance with radiation safety standard the fluoroscopy exposure switch must be…

Answer 8

Dead Man type

Question 9

It is the thickness of absorber necessary to reduce radiation density to one tenth of its original value

Answer 9

Tenth-Value Layer (TVL)

Question 9

According to the national council on radiation protection (NCRP) and measurements and regulations the leakage radiation from the x-ray tube must not be seen at ?

Answer 9

100 mR/hr

Question 10

The primary function of filtration is to reduce?

Answer 10

Low energy x-ray?

Question 11

The table top exposure during fluoroscopy shall not exceed to?

Answer 11

• 21 mGya/min (2.1 R/min) - bushong
• 2.1 mGya/min (2.1 R/min) - ppt

Question 12

It is the simplify rules design to ensure safety radiation areas for occupational workers

Answer 12

ALARA

Question 13

Give the 3 types of beam restricting device

Answer 13

Diaphragm, Cylinder and Collimator

Question 13

The minimum thickness of the protective shielding for the bucky slot cover of fluoroscopic imaging unit should be

Answer 13

0.25 mm Pb

Question 14

It states that the intensity of radiation at a location is inversely proportional to the square of its distance from the source of radiation.

Answer 14

Inverse Square Law

Question 14

It produce an audible signal or temporary interacts the x-ray time

Answer 14

Cumulative Timer

Question 15

The thickness of the absorber necessary to reduce radiation intensity to half of original value

Answer 15

Half-Value Layer (HVL)

Question 16

A device that automatically emits the size and shape of the primary beam to the size and shape of the IR

Answer 16

Positive-Beam-Limiting Device

Question 17

It protects the patient by limiting the area of the body and the volume of tissue is being irradiated

Answer 17

Collimator

Question 17

It is radiation that emerged from the leaded tube housing in directions other than that of the useful beam?

Answer 17

Leakage Radiation

Question 18

The area that can be occupied by anyone

Answer 18

Uncontrolled Area

Question 19

Give at least 3 fluoroscopic protection

Answer 19

di alam; possible bucky slot cover, protective curtain

Question 20

Give at least two type of monitoring personnel exposure devices

Answer 20

Film Badge, Thermoluminescent Dosimeter (TLD)

Question 20

The intensity of the scattered radiation one meter from the patient is approximately what percent?

Answer 20

0.1%

Question 20

Types of barrier

Answer 20

Primary and Secondary Barrier

Question 20

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

Answer 20

Scatter Radiation

Question 21

Product of the maximum mA and number of x-ray examination

Answer 21

Workload

Question 21

what is the meaning of ALARA

Answer 21

As Low As Reasonably Achievable

Question 22

it is use as the measurement of the penetrability

Answer 22

Kilovolt Peak

Question 22

The maximum acceptable variation in linearity is ___ percent from one mA station to an adjacent mA station

Answer 22

10%

Question 22

The total filtration of 50-70 kVp

Answer 22

1.5 mm Al

Question 23

What is the total filtration operates below 50 kvp

Answer 23

0.5 mm Al

Question 23

It measures the filtration if its unknown

Answer 23

Half Value Layer (HVL)

Question 23

What is the total filtration for mammography in molybdenum

Answer 23

30 micrometer Mo

Question 24

The variation in x-ray intensity should not exceed ___ percent

Answer 24

5%

Question 25

The PBL device must be accurate to the beam ___ percent of the SID

Answer 25

2%

Question 26

It must positively indicate when the x-ray tube energized and must indicate the condition of exposure

Answer 26

Control Panel

Question 27

The type of exposure should be kept to a minimum

Answer 27

Minimize Time

Question 27

Which principle is the ALARA concept primarily based on?

Answer 27

Minimizing the duration, distance, and shielding to reduce radiation exposure

Question 28

What is the reason of minimize time in radiography

Answer 28

To reduce motion blur

Question 29

Which safety feature is commonly found on X-ray control panels to prevent accidental overexposure?

Answer 29

An automatic exposure control (AEC) system

Question 29

What is the primary purpose of protective X-ray tube housing?

Answer 29

To reduce the radiation exposure to areas outside the X-ray tube by providing shielding

Question 29

What is the primary responsibility of a health physicist in a hospital setting?

Answer 29

Ensuring compliance with radiation safety regulations

Question 30

What is an example of a practical application of the ALARA principle in a medical imaging facility?

Answer 30

Implementing and adhering to protocols that limit the exposure time for patients and staff

Question 31

What is typically used as the material for the filtration in Xray tubes?

Answer 31

Copper or aluminum

Question 31

What does the Half-Value Layer (HVL) measure?

Answer 31

The thickness of material required to reduce the radiation intensity by half

Question 32

What does the effective dose measure in radiation protection?

Answer 32

The biological effect of radiation on the entire body, considering different sensitivities of tissues

Question 33

Which unit is commonly used to measure radiation dose equivalent in health physics?

Answer 33

Sievert (Sv)

Question 34

What is the primary function of a collimator in an X-ray system?

Answer 34

To shape and limit the X-ray beam to the area of interest

Question 35

SSD must not less than ____cm on mobile fluoroscopes

Answer 35

30

Question 36

RT may be in the exposure room during exposure, but only if protective apparel is worn

Answer 36

Operator shield

Question 37

SSD must not less than __ cm on stationary fluoroscopes

Answer 37

38

Question 37

Which of the following is the primary purpose of a lead apron in fluoroscopic procedures?

Answer 37

To shield the radiologic technologist from scattered radiation

Question 38

What is the function of a lead shield or lead drape used during fluoroscopy?

Answer 38

To reduce radiation exposure to areas of the patient not being imaged