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DMI 15 > Final > Flashcards

Final Flashcards

0
Q

A microprocessor found on the motherboard

A

•CPU

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1
Q

How many bytes are needed to store one alphanumeric character

A

•1byte

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2
Q 
RAM is 
A.permanent 
B.long term
C.temporary
D.all of the above
A

C.temporary

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3
Q

Any computer that needs a server for a task completion describes a

A

•thin client

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4
Q

A computer that works independently of the network describes

A

•thick client

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5
Q

A device that provides the interface between the computer & network is known as

A

Network interface card

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6
Q

A network switch

A

Sends data only to data direct devices

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7
Q 
The topology on which the Internet is based is the
Hub 
Star 
Ring 
Mesh
A

•mesh

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8
Q 
The imaging plate layer that absorbs stimulating light & reflects emitted light  is the \_\_\_\_\_\_ layer
A.active 
B.color
C.reflective 
D.backing
A

•B.color

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9
Q

The barcode layer is to identify

A

•the imaging plate

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10
Q 
When the imaging plate is irradiated, stimulated electrons enter the \_\_\_ layer
A.active
B.Conductive
C.protective
D.support
A

•B.conductive

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11
Q

The processing of scanning a moving imaging plate is known as

A

•translation

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12
Q

Each square in a matrix is called a

A

•picture element

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13
Q

Cassette based spatial resolution is lower than conventional radiography
True or false

A

•true

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14
Q

mAs is selected to the

A

•number of electrons needed

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15
Q

Quantum mottle is caused by

A

•insufficient light

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16
Q

The higher the number of pixels Ina a matrix the…

A

•higher the image resolution

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17
Q

Grid use for CR examinations is more critical then in film/screen radiography because CR

A

•imaging plates record more densities

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18
Q

It is acceptable to replace Collimation with shuttering

True/false

A

•false

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19
Q

The exposure indicator number is an

A

•indication of radiation absorbed by the imaging plate

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20
Q

Exposures outside the range indicate

A

•over/under exposure

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21
Q

Dark line artifacts can be caused by

A

•scatter through the back of the cassette

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22
Q

Fine white lines appearing on a hard copy of the image may be caused by

A

•debris on the mirror in the laser printer

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23
Q

A device that acts as a switch to send electrical charges to the image processor in a direct conversion flat panel detector is known as a

A

•thin film transistor

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24
Q

Acts as a camera

A

•charged coupled device CCD

25
Q

Detective quantum imaging systems have

A

•percentage of X-rays absorbed

26
Q

Incomplete charge transfer with cassette-less systems result in
A.inaccuracies in pixel values in subsequent exposures
B.electronic memory artifact
C.both AB
D.Neither AB

A

•C. A&B

27
Q

The nyquist Theorem states that the

A

•sampling frequency must be twice the input signal bandwidth

28
Q

A wrap around image or image aliasing occurs when

A

•sampling occurs less than twice per cycle

29
Q

Image aliasing is similar to the moiré effect caused by grid error
True or false

A

•true

30
Q

Amplification f the frequencies of the areas of interest is known as

A

•edge enhancement

31
Q

Low pass filtering is also known as

A

•smoothing

32
Q

Level controls

A

•contrast

33
Q

Using annotation markers

A

Should be used in conjunction with the techs marker

34
Q

The ability to send images to local networks station can be done using

A

•manual send function

35
Q

No matter the orientation sticker or label exist on cassette he image will display correctly
True/false

A

•false

36
Q

Any computer that a health care worker uses to view images is a

A

•display workstation

37
Q 
In which system architecture do the acquisitions modalities send send there images directly to a designated workplace 
A.client server base
B.distributed system 
C.web based system
D.image management system
A

•B.distributed system

38
Q

Reading images outside the hospital walls generally at home

A

•teleradiography

39
Q 
Which function represents the range of gray values that are being views on the monitor
A.widow
B.level
C.contrast 
D.density
A

•A.widow

40
Q

MIp

A

•visualize contrast in CT

41
Q 
Raid
A.array of inexpensive disks
B.archive of independent database 
C.array of idependt disk
D.A&C
A

•A&C

42
Q 
Archive storage configuration that links different kinds of data storage devices on a special purpose network
A.SAN
B.DAS
C.NAS
D.all of the above
A

•A.SAN

43
Q 
Archive storage configuration that has raid arrays directly attached to the network 
A.SAN
D.DAS
C.NAS
D.all of the above
A

C.NAS

44
Q

Which is not a weekly procedure

A

•phantom testing

45
Q

A.horizontal
B.circular
C.elliptical
D.transverse

A

•d.transverse

46
Q

Gas detectors

A

•Xenon-xenon crypton

47
Q

Voxel

A

•slice thickness

48
Q 
Not an advantage of MRI 
A.no ionizing
B.direct glow measurement 
C.best high contrast resolution 
D.no bone air artifact
A

•D.high contrast resolution

49
Q 
What allows us to calculate the frequency of precession 
A.precession equation
B.quadratic equation
C.lamar equation
D.
A

•c.lamar equation

50
Q

Sharp peak is called

A

•resonance peak

51
Q

MRI 3 parameters

A
  • t1
  • t2
  • spin density
52
Q

Which magnet is 80 kW

A

•resistive

53
Q

Not an advantage of superconductive magnet

A

•intense fringe field

54
Q

Far day cage attenuates RF

TRUE/FALSE

A

•true

55
Q

RF wave is transmitted into a pt
A.resonance
B.percession
C.FID

A

•A.resonance

56
Q

Self shield magnet has iron

True/False

A

•true

57
Q 
RF pulse causes nuclear spins to process in phase they are 
A.dephased
B.relaxed 
C.phase coherent
D.relaxed
A

•phase coherent

58
Q

Spin density calculate decay time

True/false

A

B.false

59
Q

When pt is in magnetic field all magnetic moment align

True/False

A

•false

DMI 15 (5 decks)

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