Michigan MRI Advanced Certification
Exam Practice Questions And Correct
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Rationale 2026 Q&A| Instant Download
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1. The primary mechanism by which MRI signal is generated is through
the manipulation of:
A. Ionizing radiation
B. Nuclear spin alignment
C. Electrical impedance
D. Ultrasound waves
The MRI signal originates from the alignment and manipulation of
nuclear spins, particularly hydrogen protons, in a magnetic field.
2. T1 relaxation refers to:
A. Loss of phase coherence
B. Recovery of longitudinal magnetization
C. Refocusing of transverse magnetization
D. Echo formation
T1 relaxation describes the return of longitudinal magnetization to
equilibrium along the main magnetic field.
3. Which parameter primarily influences image contrast in a T2-weighted
sequence?
A. Short TE
B. Short TR
C. Long TE
D. High flip angle
, A long echo time (TE) allows T2 differences to become more
pronounced and drive contrast.
4. The Larmor frequency is proportional to:
A. Field homogeneity
B. Magnetic field strength
C. Patient size
D. Gradient strength
The resonant frequency of precession (Larmor frequency) is directly
proportional to the static magnetic field.
5. Spin echo sequences are effective in reducing:
A. Scan time
B. SAR
C. Susceptibility artifacts
D. Chemical shift
Spin echo sequences refocus dephasing due to magnetic field
inhomogeneities, reducing susceptibility artifacts.
6. Gradient echo sequences are sensitive to:
A. T1 only
B. Magnetic field inhomogeneities
C. Perfect refocusing
D. Spin density
Gradient echo does not fully refocus spins and hence shows increased
sensitivity to field inhomogeneities.
7. The unit of specific absorption rate (SAR) is:
A. Tesla
B. W/kg
C. Gauss
D. Hz
SAR quantifies energy deposition per unit mass in watts per
kilogram.
8. Which coil type is best for maximizing signal in a localized region?
A. Body coil
B. Volume coil
C. Surface coil
D. Transmit-only coil
, Surface coils provide high signal-to-noise ratio for anatomy close to
the coil.
9. Aliasing artifact occurs due to:
A. Excessive TE
B. Undersampling of k-space
C. Gradient nonlinearity
D. Over-sampling
Inadequate sampling of k-space leads to wrap-around or aliasing
artifacts.
10. The chemical shift artifact is most noticeable between:
A. Water and fat
B. Bone and air
C. CSF and bone
D. Muscle and tendon
The frequency difference between water and fat produces a spatial
misregistration known as chemical shift.
11. In MRI safety, the static magnetic field hazard primarily
concerns:
A. RF burns
B. Projectile risk
C. Noise exposure
D. Contrast reactions
The static field can attract ferromagnetic objects, posing a projectile
hazard.
12. The contrast agent gadolinium shortens:
A. T2 only
B. T1 only
C. Both T1 and T2
D. Proton density
Gadolinium-based agents shorten relaxation times, primarily
affecting T1 but also T2 at higher concentrations.
13. The technique used to measure diffusion in MRI is called:
A. MRA
B. MRV
C. DWI
Exam Practice Questions And Correct
Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. The primary mechanism by which MRI signal is generated is through
the manipulation of:
A. Ionizing radiation
B. Nuclear spin alignment
C. Electrical impedance
D. Ultrasound waves
The MRI signal originates from the alignment and manipulation of
nuclear spins, particularly hydrogen protons, in a magnetic field.
2. T1 relaxation refers to:
A. Loss of phase coherence
B. Recovery of longitudinal magnetization
C. Refocusing of transverse magnetization
D. Echo formation
T1 relaxation describes the return of longitudinal magnetization to
equilibrium along the main magnetic field.
3. Which parameter primarily influences image contrast in a T2-weighted
sequence?
A. Short TE
B. Short TR
C. Long TE
D. High flip angle
, A long echo time (TE) allows T2 differences to become more
pronounced and drive contrast.
4. The Larmor frequency is proportional to:
A. Field homogeneity
B. Magnetic field strength
C. Patient size
D. Gradient strength
The resonant frequency of precession (Larmor frequency) is directly
proportional to the static magnetic field.
5. Spin echo sequences are effective in reducing:
A. Scan time
B. SAR
C. Susceptibility artifacts
D. Chemical shift
Spin echo sequences refocus dephasing due to magnetic field
inhomogeneities, reducing susceptibility artifacts.
6. Gradient echo sequences are sensitive to:
A. T1 only
B. Magnetic field inhomogeneities
C. Perfect refocusing
D. Spin density
Gradient echo does not fully refocus spins and hence shows increased
sensitivity to field inhomogeneities.
7. The unit of specific absorption rate (SAR) is:
A. Tesla
B. W/kg
C. Gauss
D. Hz
SAR quantifies energy deposition per unit mass in watts per
kilogram.
8. Which coil type is best for maximizing signal in a localized region?
A. Body coil
B. Volume coil
C. Surface coil
D. Transmit-only coil
, Surface coils provide high signal-to-noise ratio for anatomy close to
the coil.
9. Aliasing artifact occurs due to:
A. Excessive TE
B. Undersampling of k-space
C. Gradient nonlinearity
D. Over-sampling
Inadequate sampling of k-space leads to wrap-around or aliasing
artifacts.
10. The chemical shift artifact is most noticeable between:
A. Water and fat
B. Bone and air
C. CSF and bone
D. Muscle and tendon
The frequency difference between water and fat produces a spatial
misregistration known as chemical shift.
11. In MRI safety, the static magnetic field hazard primarily
concerns:
A. RF burns
B. Projectile risk
C. Noise exposure
D. Contrast reactions
The static field can attract ferromagnetic objects, posing a projectile
hazard.
12. The contrast agent gadolinium shortens:
A. T2 only
B. T1 only
C. Both T1 and T2
D. Proton density
Gadolinium-based agents shorten relaxation times, primarily
affecting T1 but also T2 at higher concentrations.
13. The technique used to measure diffusion in MRI is called:
A. MRA
B. MRV
C. DWI
