Brainscape's Knowledge GenomeTM

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


See full index

BE101P > MRI: Introduction to MRI > Flashcards

MRI: Introduction to MRI Flashcards

1
Q

Biomedical imaging modality that involves:

Placing the body in a strong magnetic field to cause spin systems to precess by transmitting radio frequency energy to the body and receiving radio energy induced in the body

This is arguably the fastest growing imaging modality recently

A

MRI

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

Biomedical imaging modality that involves:

Transmission of ultrasonic waves toward the body and detection of reflected ultrasonic waves from the body

A

Ultrasound

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

Biomedical imaging modality that involves:

Injection of radiotracers in the bloodstream of the body and detection of gamma rays emitted from radiotracers within the body

A

Nuclear medicine (planar scintigraphy, SPECT, PET)

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

Biomedical imaging modality that involves:

Transmission of X-rays through the body and detection of X-rays on the opposite side of the body.

A

Radiographic imaging (e.g. X-ray, CT)

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

What does MRI stand for

A

Magnetic Resonance Imaging

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

What is the phenomena called when radio frequency energy is transmitted to the body

A

Magnetic resonance

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

Biomedical imaging modality/s that fall under the middle of the electromagnetic spectrum at around visible light

A

Optical imaging

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

Biomedical imaging modality/s that fall under radio waves (also close to microwaves)

A

Ultrasound and MRI

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

The electromagnetic spectrum in order from highest wavelength (low frequency) to lowest wavelength (high frequency)

A

Radio
Microwave
Infrared
Visible
Ultraviolet
X-ray
Gamma ray

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

The first beauty of biomedical imaging

A

Noninvasive (Ultrasound and MRI are completely noninvasive)

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

Biomedical imaging modality/s that fall under gamma rays

A

PET scan

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

Biomedical imaging modality/s that fall under X-rays

A

CT scan

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

Features that MRI has in comparison with other imaging modalities

A

High spatial resolution
High soft tissue contrast
Tomographic imaging
Scan along any direction
Noninvasive
Integration of different imaging modalities

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

SPECT, PET, Diffusion/Perfusion MRI, and fMRI are involved.

The last beauty of biomedical imaging

A

Physiology, Metabolism, and Function

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

These biomedical imaging modalities fall under projection imaging

A

X-ray and planar scintigraphy

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

The second beauty of biomedical imaging

A

Tomographic Imaging (CT, SPECT, PET, Ultrasound, and MRI involve tomographic imaging)

17
Q

These biomedical imaging modalities expose you to radiation but are still noninvasive

A

X-ray, CT, SPECT, and PET

18
Q

Two (2) reasons why protons are the main signal source of MRI

A

Protons are like tiny magnets and 70% of the body consists of H2O

19
Q

Which particular protons are the main signal source of MRI

A

Hydrogens (H)

20
Q

What is the main signal source of MRI?

A

Protons

21
Q

MRI involves time sequencing of currents in radio frequency coil(s) and gradient coils.

The manipulation of these sequences provides various information of our body beyond anatomy

A

Pulse sequences

22
Q

MRI involves ____ and ____ imaging

A

Physiological and functional imaging

23
Q

Last Step of MR Image Aquisition

A

MR Image itself

24
Q

Step 3 of MR Image Aquisition

A

K-space

25
Q

Step 2 of MR Image Aquisition

A

Pulse sequence (then signal acquisition afterwards)

26
Q

Step 1 of MR Image Aquisition

A

MRI

27
Q

What spinning phenomena causes a proton to have a magnetic moment and act as a tiny magnet?

A

Spin angular momentum

28
Q

Alternative nuclei that can be used for MRI

A

C, F, Na, O, P

29
Q

Major hardware component of MRI that aids in imaging

A

A set of 3 gradient coils (X, Y, Z)

30
Q

Major hardware component of MRI that aids in resonance

A

A radiofrequency transmitter and receiver

31
Q

Major hardware component of MRI that is typically superconducting

A

Magnet (magnetic)

32
Q

Spatially modulating the magnetic field strength to distinguish signals from different locations using gradient coils

A

Imaging

33
Q

Transmitting RF energy through the subject via RF coil, turning of transmitter, and receiving RF signals emitted by the subject using the same or another RF coil

A

Resonance

34
Q

Putting a subject in a strong magnetic field generated by the main magnet

A

Magnetic

BE101P (5 decks)

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