ESTUDYR
AMI 302 – Unit 2: Fundamentals of MRI
INTENSIVE MULTIPLE-CHOICE QUESTIONS WITH
RATIONALES
1. Which three components are required to generate an MRI signal?
A. Gradient coils, RF coils, computer
B. Strong static magnetic field, MRI-active nuclei, and radiofrequency energy
C. X-rays, RF pulses, gradient coils
D. Magnetic field gradients only
✅Correct Answer: B
Rationale:
MRI requires B₀, hydrogen nuclei with magnetic moments, and RF excitation to produce
signal.
2. The strong main magnetic field in MRI is known as:
A. B1
B. Gradient field
C. B₀
D. RF field
✅Correct Answer: C
Rationale:
B₀ is the static magnetic field responsible for proton alignment.
3. The direction of B₀ in a superconducting magnet depends on:
A. Patient position
B. RF frequency
C. Magnet construction and pole orientation
D. Gradient polarity
,ESTUDYR
✅Correct Answer: C
4. The 360-degree magnetic field surrounding the magnet is called the:
A. Isocenter
B. Bore
C. Fringe field
D. Gradient field
✅Correct Answer: C
5. Where is the magnetic field strongest in MRI?
A. Outside the bore
B. At the fringe field
C. At the center of the magnet
D. At the RF coil
✅Correct Answer: C
6. The center opening of the MRI magnet is called the:
A. Isocenter
B. Bore
C. Gradient coil
D. Gantry
✅Correct Answer: B
7. Inside the bore, magnetic flux lines flow from:
A. North to south
B. South to north
C. RF to gradient
D. Center outward
✅Correct Answer: B
, ESTUDYR
8. Outside the bore, magnetic flux lines flow from:
A. South to north
B. North to south
C. Parallel to B₀
D. Random directions
✅Correct Answer: B
9. The spherical region (≈40–50 cm) where magnetic field lines are most concentrated is the:
A. Fringe field
B. Bore
C. Isocenter
D. Gradient zone
✅Correct Answer: C
10. The anatomy being imaged must be placed at the:
A. Fringe field
B. Gradient coil
C. Isocenter
D. RF coil
✅Correct Answer: C
11. High magnetic flux density indicates a:
A. Weak magnetic field
B. Strong magnetic field
C. Distorted field
D. Inhomogeneous field
✅Correct Answer: B
AMI 302 – Unit 2: Fundamentals of MRI
INTENSIVE MULTIPLE-CHOICE QUESTIONS WITH
RATIONALES
1. Which three components are required to generate an MRI signal?
A. Gradient coils, RF coils, computer
B. Strong static magnetic field, MRI-active nuclei, and radiofrequency energy
C. X-rays, RF pulses, gradient coils
D. Magnetic field gradients only
✅Correct Answer: B
Rationale:
MRI requires B₀, hydrogen nuclei with magnetic moments, and RF excitation to produce
signal.
2. The strong main magnetic field in MRI is known as:
A. B1
B. Gradient field
C. B₀
D. RF field
✅Correct Answer: C
Rationale:
B₀ is the static magnetic field responsible for proton alignment.
3. The direction of B₀ in a superconducting magnet depends on:
A. Patient position
B. RF frequency
C. Magnet construction and pole orientation
D. Gradient polarity
,ESTUDYR
✅Correct Answer: C
4. The 360-degree magnetic field surrounding the magnet is called the:
A. Isocenter
B. Bore
C. Fringe field
D. Gradient field
✅Correct Answer: C
5. Where is the magnetic field strongest in MRI?
A. Outside the bore
B. At the fringe field
C. At the center of the magnet
D. At the RF coil
✅Correct Answer: C
6. The center opening of the MRI magnet is called the:
A. Isocenter
B. Bore
C. Gradient coil
D. Gantry
✅Correct Answer: B
7. Inside the bore, magnetic flux lines flow from:
A. North to south
B. South to north
C. RF to gradient
D. Center outward
✅Correct Answer: B
, ESTUDYR
8. Outside the bore, magnetic flux lines flow from:
A. South to north
B. North to south
C. Parallel to B₀
D. Random directions
✅Correct Answer: B
9. The spherical region (≈40–50 cm) where magnetic field lines are most concentrated is the:
A. Fringe field
B. Bore
C. Isocenter
D. Gradient zone
✅Correct Answer: C
10. The anatomy being imaged must be placed at the:
A. Fringe field
B. Gradient coil
C. Isocenter
D. RF coil
✅Correct Answer: C
11. High magnetic flux density indicates a:
A. Weak magnetic field
B. Strong magnetic field
C. Distorted field
D. Inhomogeneous field
✅Correct Answer: B
