Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

RAD 111 > CH 8 > Flashcards

CH 8 Flashcards

1
Q

Diagnostic yield versus diagnostic efficacy

A

Yield: amount of useful information produced by image
Efficacy: accuracy of information on image

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

X-ray machine design features

A

Tube
Tube support
Collimator
Radiographic table
X-ray generator/control
Upright image receptor

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

Radiographic table

A

Fixed or variable height
“Floating” table top
Radiolucent
May have tilting capability (wont have height capabilities)

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

X-ray tube supports

A

floor mounted or ceiling suspended
- facilitate easy and efficient positioning around patient
- Moves, transverse, longitudinal, vertical, rotates

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

Types of IR

A

Cassette based systems
- film screen
- CR
Digital radiography systems
- Flat panel technology
- thin film transistors (TFTs)

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

The only radiation that is of any clinical value is ____________

A

Remnant
- converted to signal then sent to computer

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

PSP Tech (CR)

A
  • latent image consists of electron traps on plate
  • housed in light tight cassette
  • inserted into CR reader
  • CR reader opens cassette and scans with low energy laser beam
  • Plate that has been scanned is exposed to intense white light
  • Clean plate is reinserted into cassette for reuse and ejected from reader
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Important CR considerations

A
  • CR plates are extra sensitive to low energy radiation after they have been exposed
  • Electron traps can dissolve with lengthy delays in processing
  • spatial resolution difference among cassette sizes
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Mobile fluoroscopy

A

Used in surgery
C– arm design
Fixed SID and center to x-ray tube
Limited power
Video monitors and digital enhancement included in monitor cart

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

Digital tomosynthesis

A

-flat panel digital detector
-multiple images during single “sweep”
-view images in scrolling fashion

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

Dual energy subtraction

A
  • flat panel digital detector
  • Two rapid exposures, back to back, high kVp and low kVp
  • Data points analyzed and similar data removed from file which causes final image to reveal selected subtracted anatomy
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

DXA

A

Dual emission X-ray absorptiometry
- Used to assess bone health

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

Mammography

A

Study of breast tissue

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

CT

A

Acquires images of patients in axial plane

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

Sonography

A

Ultra high frequency sound waves

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

MR

A

Nuclear magnetic fields in radiofrequency emissions from select nuclei

17
Q

Radionuclide imaging

A

Nuclear medicine
Employees radiopharmaceuticals
Detected by a GammaRay camera

18
Q

Radiation oncology

A

Use a very high x-ray energy for therapeutic purposes, which are intended to destroy cancers tissues

RAD 111 (7 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions