What digital fluoroscopic imaging technique utilizes changing masks, which provides information of
changes in contrast media content within a structure
1.Time interval difference imaging
2. Mask mode fluoroscopy
3. K -edge fluoroscopy
4. Synchronized fluoroscopy - Correct Answer 1. Time interval difference imaging
All of the following will directly influence the table-top exposure rate except
1. Light in the fluoroscopy room
2. kVp
3. Target to panel distance
4. Filtration - Correct Answer 1. Light in the fluoroscopy room
Attenuation of a radiation beam's intensity as it passes through an absorber is governed by
1. Time
2. The specific mediums density
3. The energy of the radiation
4. The thickness of the absorber traversed - Correct Answer 2. The specific mediums density
3. The energy or radiation
4. The thickness of the absorber traversed
What recording medium will result in the least recorded resolution
1. Spot films using a spot film camera
2. video tape recording
3. spot films using conventional cassettes
4. video disc recording - Correct Answer 2. video tape recording
,During the period when an individual receives an occupational dose, they are _ considered to be a
"member of the public"
1. sometimes
2. always
3. it depends
4. never - Correct Answer 4.never
A person wearing a _ apron will reduce transmitted exposure to approximately 99.9% of the incident
scatter dose
1. 1.5 mm Pb equivalent
2. 0.50 mm Pb equivalent
3. 0.25 mm Pb equivalent
4. 1.0 mm Pb equivalent - Correct Answer 2. 0.50 mm Pb equivalent
If the input phosphor of an image intensifier measures 15 inches in diameter and the output phosphor
measures 1.0 inches, the minification gain would be
1. 30
2. 225
3. 175
4. 300 - Correct Answer Minification Gain = {15(2) = 225} input screen diameter (2) / {1.0 (2) = 1} output
screen diameter (2) = 225/1= 225
What electronic system is designed to help maintain a consistent level of image brightness
1. photo-emitter
2. automatic brightness stabilizer
3. camera control unit
4. vidicon - Correct Answer 2. automatic brightness stabilizer
Energy subtraction as used in digital fluoroscopy exhibits less _ than temporal subtraction
1. complexity
,2. x-ray intensity
3. kVp
4. motion artifact - Correct Answer 4. motion artifact
Bone marrow dose is measured
1. directly from bone marrow
2. as estimate from gonadal dose
3. as an estimate from ESE
4. directly from the beam - Correct Answer 3. as an estimate from the ESE
The Privacy Rule is meant to ensure that there is/are
1. security of electronic personal health information
2. standardization of electronic patient health data
3. limits PHI to a "need to know.." basis to carry out medical treatment
4. all the listed answers - Correct Answer 4. all the listed answers
To provide illumination stability of the virtual image during fluoroscopy, most modern units will
automatically adjust radiation levels for more dense and more radiolucent body parts. This functionality
is known as:
1. velling glare
2. image flare
3. automatic adaption
4. automatic brightness control - Correct Answer 4. automatic brightness control
The electronic signal which carries image information from a television camera to a viewing monitor is
termed the:
1. video signal
2. return beam
3. synchronization pulse
4. bandpass - Correct Answer 1. video signal
, If only one personnel monitoring device is worn, it must be located
1. under the apron at the collar level
2. outside the apron at the gonad level
3. outside the apron at the collar level - Correct Answer 3. outside the apron at the collar level
The random pattern of incident radiation, which often results in the appearance of "snow" or "mottle"
when viewing the virtual image is called
1. flicker effect
2. lens opacity
3. quantum noise
d. vignetting - Correct Answer 3. quantum noise
When wearing a "film badge" as a personnel monitoring device, it must be positioned
1. at waist level
2. at collar level
3. under the protective apron
4. outside the protective apron - Correct Answer b. 2 and 4
Which of the following are considered to be advantages of using a film badge for radiation monitoring
1. inexpensive
2. reusable
3. provides a permanent record
4. provides an objective review of exposure history - Correct Answer c. 1 and 3
which of the following statements is true with respect to obtaining a medical history for a radiographic
examination
1. should include any pertinent information about the patient and indicated the reason for the
examination
2. is not considered confidential information
changes in contrast media content within a structure
1.Time interval difference imaging
2. Mask mode fluoroscopy
3. K -edge fluoroscopy
4. Synchronized fluoroscopy - Correct Answer 1. Time interval difference imaging
All of the following will directly influence the table-top exposure rate except
1. Light in the fluoroscopy room
2. kVp
3. Target to panel distance
4. Filtration - Correct Answer 1. Light in the fluoroscopy room
Attenuation of a radiation beam's intensity as it passes through an absorber is governed by
1. Time
2. The specific mediums density
3. The energy of the radiation
4. The thickness of the absorber traversed - Correct Answer 2. The specific mediums density
3. The energy or radiation
4. The thickness of the absorber traversed
What recording medium will result in the least recorded resolution
1. Spot films using a spot film camera
2. video tape recording
3. spot films using conventional cassettes
4. video disc recording - Correct Answer 2. video tape recording
,During the period when an individual receives an occupational dose, they are _ considered to be a
"member of the public"
1. sometimes
2. always
3. it depends
4. never - Correct Answer 4.never
A person wearing a _ apron will reduce transmitted exposure to approximately 99.9% of the incident
scatter dose
1. 1.5 mm Pb equivalent
2. 0.50 mm Pb equivalent
3. 0.25 mm Pb equivalent
4. 1.0 mm Pb equivalent - Correct Answer 2. 0.50 mm Pb equivalent
If the input phosphor of an image intensifier measures 15 inches in diameter and the output phosphor
measures 1.0 inches, the minification gain would be
1. 30
2. 225
3. 175
4. 300 - Correct Answer Minification Gain = {15(2) = 225} input screen diameter (2) / {1.0 (2) = 1} output
screen diameter (2) = 225/1= 225
What electronic system is designed to help maintain a consistent level of image brightness
1. photo-emitter
2. automatic brightness stabilizer
3. camera control unit
4. vidicon - Correct Answer 2. automatic brightness stabilizer
Energy subtraction as used in digital fluoroscopy exhibits less _ than temporal subtraction
1. complexity
,2. x-ray intensity
3. kVp
4. motion artifact - Correct Answer 4. motion artifact
Bone marrow dose is measured
1. directly from bone marrow
2. as estimate from gonadal dose
3. as an estimate from ESE
4. directly from the beam - Correct Answer 3. as an estimate from the ESE
The Privacy Rule is meant to ensure that there is/are
1. security of electronic personal health information
2. standardization of electronic patient health data
3. limits PHI to a "need to know.." basis to carry out medical treatment
4. all the listed answers - Correct Answer 4. all the listed answers
To provide illumination stability of the virtual image during fluoroscopy, most modern units will
automatically adjust radiation levels for more dense and more radiolucent body parts. This functionality
is known as:
1. velling glare
2. image flare
3. automatic adaption
4. automatic brightness control - Correct Answer 4. automatic brightness control
The electronic signal which carries image information from a television camera to a viewing monitor is
termed the:
1. video signal
2. return beam
3. synchronization pulse
4. bandpass - Correct Answer 1. video signal
, If only one personnel monitoring device is worn, it must be located
1. under the apron at the collar level
2. outside the apron at the gonad level
3. outside the apron at the collar level - Correct Answer 3. outside the apron at the collar level
The random pattern of incident radiation, which often results in the appearance of "snow" or "mottle"
when viewing the virtual image is called
1. flicker effect
2. lens opacity
3. quantum noise
d. vignetting - Correct Answer 3. quantum noise
When wearing a "film badge" as a personnel monitoring device, it must be positioned
1. at waist level
2. at collar level
3. under the protective apron
4. outside the protective apron - Correct Answer b. 2 and 4
Which of the following are considered to be advantages of using a film badge for radiation monitoring
1. inexpensive
2. reusable
3. provides a permanent record
4. provides an objective review of exposure history - Correct Answer c. 1 and 3
which of the following statements is true with respect to obtaining a medical history for a radiographic
examination
1. should include any pertinent information about the patient and indicated the reason for the
examination
2. is not considered confidential information
