Brainscape's Knowledge GenomeTM


Top Flashcards (Certified)
All Flashcards

IR > IR > Flashcards

IR Flashcards

(70 cards)

Start Studying
1
Q

It is the greatest impact on diagnostic equipment in radiology during the last 2 decades:

a. Subtraction technique
b. Computed tomography
c. Magnetic resonance imaging
d. Digital subtraction angiography

A

B,C,D

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

What is the major problem usually encountered in DSA?
a. Misregistration
b. Positioning
c. Preparation
d. All of the above

A

A

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

Picture elements are also known as:
a. Memory
b. CPU
c. Pixels
d. Image receptor

A

C

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

Hardcopies of a study can be obtained with use of:
a. Digital subtraction angiography
b. Fluoroscopic monitor
c. Image receptor
d. Multiformat camera or laser images

A

D

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

Diagnostic purpose in digital subtraction angiography:
a. Allow examination of blood flow to the head
b. Detects and evaluates abnormalities in blood circulation to the brain
c. Helps study results of surgery
d. All of the aboveD

A

D

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

Which of the following is/are risks and precaution during digital subtraction angiography procedures? a. Patient poor cardiac function
b. Kidney disease
c. Liver disease
d. All of the above

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Which of the following is not included in the pathologic conditions that can be seen in digital subtraction angiography? a. Myelogenesis
b. Cerebral aneurysms
c. Angiomas
d. Stenosis

A

A

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

Which of the following is not included in the patient preparation?
a. Don’t eat any food
b. No fluids
c. Nothing per orem
d. Full meal

A

D

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

Digital subtraction angiography is the procedure done to demonstrate:
a. Opacified blood vessels
b. Bony structures
c. Fracture
d. deformity

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

DSA is the procedure that can visualize the following except:
a. Opacified vessels
b. Stenosis
c. Thrombus
d. fracture

A

D

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

Which is not a major component of an X-ray Imaging facility?
a. Rectifier
b. Control Console
c. High voltage generator
d. X-ray tube

A

A

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

It is a technical factor that is responsible for penetrating body parts and brings beam to the image receptor: a. mAs
b. Density
c. Kilovoltage peak
d. mA

A

C

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

It is the relationship between actual and effective focal spot:
a. Line focus principle
b. Inverse square law
c. All of the above
d. None of the above

A

A

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

Which of the following is a unit used for electric potential:
a. Milliampere
b. Kilovoltage
c. Ohms
d. All of the above

A

B

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

It is a measure of multiplying milliamperage, kilovoltage peak and the generator constant:
a. Hounsfield units
b. Heat units
c. Ohm`s law
d. None of the above

A

B

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

These systems are useful when examining objects in rapid motion or when studying transient events such as the tripping of an electrical breaker:
a. Flash X-ray generator
b. Simple generator
c. Full phase generator
d. X-ray tube

A

A

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

It is a transformer that has one winding and one coil:
a. Step down transformer
b. Step up transformer
c. Autotransformer
d. Automatic transformer

A

C

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

Transformers operate in what specific principle?
a. Hormesis
b. Electromagnetic induction
c. Electromagnetism
d. Magnetic laws

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

It is a special type of transformer used in x-ray machine that increases the output voltage:
a. Autotransformer
b. Step up transformer
c. Step down transformer
d. Automatic Transformer

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

It is a special type of transformer used in x-ray machine that decreases the output voltage:
a. Autotransformer
b. Step up transformer
c. Step down transformer
d. Automatic transformer

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

It is the negatively part and electrode of an x-ray tube:
a. Anode
b. Cathode
c. Filament
d. Tungsten

A

B

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

It is referred to as the boiling off of electrons ready to be ejected to the anode target to complete X-ray production: a. Ionization
b. Cloud seeding
c. Electron cloud
d. Thermionic Emission

A

D

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

It is the relationship between actual and effective focal spot:
a. Line focus principle
b. Inverse square law
c. All of the above
d. None of the above

A

A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
24
Q

X-ray beam is heterogeneous in:
a. Physical
b. Nature
c. Solid state
d. Visible

A

C

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
25
When certain materials are struck with x-rays, they give off visible light; this property is called: a. Remnant rays b. Ionize gas c. Radiation d. Fluorescence
D
26
X-rays will cause skin to redden and may destroy tissues: a. Chemically b. Photographically c. Physiologically d. Ionization
C
27
It is a device that generates x-rays and specially designed vacuum tube with two electrodes: a. Collimator b. Fluoroscopic monitor c. Camera d. X-ray tube
D
28
Which of the following is not one of the properties of x-rays? a. X-ray will ionize any gas it pass through b. Cause electrons to move at high speed c. X-rays are produced by electrons bombarding a hard target d. Affect photographic film
D
29
Milliampere per second (mAs) primarily controls which of the following? a. Radiographic detail b. Distortion c. Density d. Contrast
C
30
The glass envelope contains two electrodes. These are: a. Anode and cathode b. Tube housing c. Positive and negative d. X-ray tube
A
31
1. It is a vacuum that operates by converting photons of light into electrons, amplifying the electrons, and then converting the amplified electrons back into photons for viewing: a. Image receptor b. Image Intensifier c. Image reconstruction d. None of the above
B
32
It is a device that converts low levels of light from various wavelengths into visible quantities of light at a single wavelength: a. Sensitometer b. Intensifier c. Image intensifier tube d. X-ray tube
C
33
It is made up of thousands of tiny conductive channels, tilted at an angle away from normal to encourage more electron collisions: a. Intensifier tube b. Midcoronal plane c. Midsagittal plane (MSP) d. Microchannel plate (MCP)
D
34
It was an image intensifier was used by the military during World War II which allowed vision at night with infrared lighting for both shooting and personal night vision: a. Generation 0 b. Generation 1 c. Generation 3 d. Generation 4
A
35
It is a second generation image intensifier that uses the same multialkali photocathode: a. Imaging plate b. Micro-channel plate c. Generator d. High frequency generator
B
36
Thin film image intensifiers was developed under what generation? a. Generation 0 b. Generation 1 c. Generation 3 d. Generation 4
C
37
It was when the US company Litton developed filmless image tube: a. 1999 b. 1998 c. 1988 d. 1997
B
38
It functions like a camera shutter allowing images to pass through when an electronic gate is enabled: a. Intensification b. Gating c. Electromagnetism d. Magnetic laws
B
39
It is a feature found in many image intensifier tubes that occurs at high frequency and by varying the duty cycle to maintain a constant current draw from the microchannel plate: a. Gating b. Phosphorescence c. Intensification d. Autogating
D
40
It defines how many electrons are produced per quantity of light that falls on the photocathode: a. Gain b. Resolution c. Sensitivity d. None of the above
D
41
Which of the following gradually decrease during the lifetime of an image intensifier? a. Spatial resolution b. Contrast resolution c. All of the above d. None of the above
C
42
It is caused by the unequal collection of light at the center of the image intensifier compared with the light at its periphery: a. Lag b. Vignetting c. Veiling Glare d. Pincushion Distortion
B
43
It is the scattering of light and the defocusing of photoelectrons within the image intensifier: a. Vignetting b. Pincushion Distortion c. Veiling Glare d. S Distortion
C
44
It is a geometric, nonlinear magnification across the image: a. Veiling Glare b. S Distortion c. Pincushion Distortion d. Lag
C
45
It is a phenomenon wherein electrons within the image intensifier move in paths along designated lines of flux: a. S Distortion b. Veiling Glare c. Lag d. Pincushion Distortion
A
46
It degrades the temporal resolution of the dynamic image: a. S Distortion b. Veiling Glare c. Lag d. Pincushion Distortion
C
47
It is defined as the brightness ratio of the periphery to the center of the output window: a. Brightness gain b. Contrast ratio c. Conversion Factor d. None of the above
B
48
Transformers operate in what specific principle? a. Conversion factor b. Contrast ratio c. Brightness gain d. Flux gain
D
49
It is defined as the ratio of input area to the output area of the image intensifier: a. Minification gain b. Flux gain c. Brightness gain d. Contrast ratio
A
50
Which of the following is not a major component of an image intensifier? a. Input window b. Input phosphor c. Image receptor d. Photocathode
C
51
Which of the following gradually decrease during the lifetime of an image intensifier? a. Spatial resolution b. Contrast resolution c. All of the above d. None of the above
C
52
It is caused by the unequal collection of light at the center of the image intensifier compared with the light at its periphery: a. Lag b. Vignetting c. Veiling Glare d. Pincushion Distortion
B
53
It is the scattering of light and the defocusing of photoelectrons within the image intensifier: a. Vignetting b. Pincushion Distortion c. Veiling Glare d. S Distortion
C
54
It is a geometric, nonlinear magnification across the image: a. Veiling Glare b. S Distortion c. Pincushion Distortion d. Lag
C
55
It is a phenomenon wherein electrons within the image intensifier move in paths along designated lines of flux: a. S Distortion b. Veiling Glare c. Lag d. Pincushion Distortion
A
56
It degrades the temporal resolution of the dynamic image: a. S Distortion b. Veiling Glare c. Lag d. Pincushion Distortion
C
57
It is defined as the brightness ratio of the periphery to the center of the output window: a. Brightness gain b. Contrast ratio c. Conversion Factor d. None of the above
B
58
Transformers operate in what specific principle? a. Conversion factor b. Contrast ratio c. Brightness gain d. Flux gain
D
59
It is defined as the ratio of input area to the output area of the image intensifier: a. Minification gain b. Flux gain c. Brightness gain d. Contrast ratio
A
60
Which of the following is not a major component of an image intensifier? a. Input window b. Input phosphor c. Image receptor d. Photocathode
C
61
It was a major technological accomplishment first implemented during the 1950`s: a. Recording of radiographs in a film b. Recording of videos in a film c. Recording of video signals on a magnetic tape d. Recording of dynamic heart movement
C
62
It is a technique in which two recording heads are embedded on opposite sides of a cylinder that is rapidly rotated as the tape is drawn past at an angle: a. Axial-scan recording b. Helical-scan recording c. Recording technique d. mA regulation technique
B
63
The first home VCRs were first introduced in the mid-1970s by: a. Sharp b. Samsung c. Mitsubishi d. Sony
D
64
It is a 300-mm plastic disc on which signals were recorded as a sequence of variable-length pits: a. VCH b. LaserDisc c. Diskette d. CD
B
65
Digital video disc (DVD) is also known as what? a. Automated disc b. Automatic disc c. Photographic disc d. Digital versatile disc
D
66
It is a method in which magnetic recording is made simultaneously with the live-action pickup: a. Flash x-ray generation b. Simple replay c. Full phase replay d. Instant replay
D
67
This technique removes the image from one camera while inserting the image from another, with a sharp, moving boundary between them: a. Wipe b. Stripe c. Brisk d. Transform
A
68
These are used to create graphics and text broadcast over television, particularly in news and weather programs: a. Interconnecting graphics b. Interactive computer graphics c. Electromagnets d. Magnetic graphics
B
69
It is a form of television pickup device used to record images from film transparencies, either still or motion-picture: a. Printed scanner b. Flying spot scanner c. CT scanner d. Automatic Transformer
B
70
It is a technique wherein the film is projected onto an image sensor for conversion into a video signal: a. Intermittent projector b. Continuous projector c. Telecine d. Photosensor
C

IR (1 decks)

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