Magnetic Resonance MCQs with Answers

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Magnetic Resonance Online Quiz

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• Test Name: Magnetic Resonance MCQ Quiz Practice
• Type: Quiz Test
• Total Questions: 40
• Total Marks: 40
• Time: 40 minutes

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Magnetic Resonance

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1 / 40

What is the primary risk associated with MRI scans?

Radiation exposure

Ferromagnetic objects

Allergic reaction

2 / 40

What term describes the decrease in signal intensity in certain MRI sequences due to rapid transverse relaxation?

Signal drop

Signal increase

Signal void

3 / 40

What is the role of RF pulses in MRI?

Increase resolution

Create images

Excite protons

4 / 40

What is the Larmor frequency?

Spin frequency

Resonance frequency

Precessional frequency

5 / 40

What does the term 'slice thickness' refer to in MRI?

Width of the gradient field

Thickness of the scanned section

Strength of the RF pulse

6 / 40

What does the 'flip angle' refer to in MRI?

Angle of gradient coil

Angle of RF pulse

Angle of magnetic field

7 / 40

What is the primary clinical application of Diffusion Tensor Imaging (DTI)?

Mapping white matter tracts

Detecting brain tumors

Imaging bone fractures

8 / 40

Which type of imaging is particularly useful for detecting brain ischemia?

Functional MRI

Diffusion MRI

Perfusion MRI

9 / 40

Which sequence is typically used to suppress fat signal?

T2-weighted

Fat Saturation

Diffusion-weighted

10 / 40

Which MRI technique is used to visualize blood vessels?

Spectroscopy

MR Angiography (MRA)

Diffusion MRI

11 / 40

What does TE stand for in MRI?

Echo Time

Emission Time

Excitation Time

12 / 40

What does STIR stand for in MRI?

Short Time Isotropic Recovery

Short TI Inversion Recovery

Short Time Inversion Recovery

13 / 40

What kind of magnet is most commonly used in MRI machines?

Permanent magnet

Resistive magnet

Superconducting magnet

14 / 40

Which organ is commonly imaged using MRCP (Magnetic Resonance Cholangiopancreatography)?

Biliary system

Heart

Kidneys

15 / 40

What is the primary component of the MRI signal?

Calcium protons

Hydrogen protons

Iron protons

16 / 40

What is the term for the energy difference between two spin states in MRI?

Spin energy

Zeeman energy

Larmor energy

17 / 40

What does FLAIR stand for in MRI?

Fast Low Angle Inversion Recovery

Fast Longitudinal Inversion Recovery

Fluid Attenuated Inversion Recovery

18 / 40

In functional MRI (fMRI), what is primarily measured?

Blood oxygenation

Glucose metabolism

Calcium ion concentration

19 / 40

What is one of the primary advantages of MRI over CT?

Faster scan times

Higher availability

No ionizing radiation

20 / 40

In an MRI context, what is an artifact?

Signal increase

Unwanted image feature

Image enhancement

21 / 40

What does the term 'T1 relaxation' refer to in MRI?

Transverse relaxation

Spin-spin relaxation

Longitudinal relaxation

22 / 40

What does TR stand for in MRI?

Recovery Time

Resonance Time

Repetition Time

23 / 40

What is the typical strength of clinical MRI magnets?

0.5 - 1 Tesla

3 - 7 Tesla

1.5 - 3 Tesla

24 / 40

What does DWI stand for in MRI?

Direct Weighted Imaging

Diffusion Weighted Imaging

Dynamic Weighted Imaging

25 / 40

Which particle's spin is primarily used in MRI?

Electron

Proton

Neutron

26 / 40

What is the unit of magnetic field strength in MRI?

Henry

Tesla

Gauss

27 / 40

Which sequence is used to evaluate white matter lesions in multiple sclerosis?

T1-weighted

FLAIR

T2-weighted

28 / 40

What is a common use of MRI in oncology?

Infection diagnosis

Tumor detection

Bone density measurement

29 / 40

Which contrast agent is commonly used in MRI?

Barium

Iodine

Gadolinium

30 / 40

What is the typical duration of a standard MRI scan?

30-60 minutes

10-15 minutes

90-120 minutes

31 / 40

What is the main purpose of the gradient coils in MRI?

Signal amplification

Image enhancement

Spatial encoding

32 / 40

Which tissue appears dark on a T1-weighted MRI image?

Cerebrospinal fluid

Fat

White matter

33 / 40

What does MRI stand for?

Magnet Resonance Imaging

Magnetic Radiology Imaging

Magnetic Resonance Imaging

34 / 40

What is a major benefit of using a 3T MRI scanner over a 1.5T scanner?

Shorter scan time

Higher resolution

Lower cost

35 / 40

What does 'T2 relaxation' describe?

Transverse relaxation

Longitudinal relaxation

Proton density relaxation

36 / 40

What safety concern is associated with the strong magnetic field in MRI?

Chemical exposure

Projectile hazard

Radiation hazard

37 / 40

What artifact is caused by movement during an MRI scan?

Motion artifact

Gibbs ringing

Aliasing

38 / 40

Which tissue typically has the highest signal intensity on a T2-weighted image?

Air

Cerebrospinal fluid

Bone

39 / 40

In which plane are most MRI brain scans acquired?

Coronal

Axial

Sagittal

40 / 40

What is an MR spectroscopy used for?

Measuring blood flow

Creating anatomical images

Analyzing chemical composition

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