MRI Technologist Certification Exam
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
Question 1
What does MRI primarily use to create images?
A. X-rays
B. Radio waves and magnetic fields
C. Ultrasound waves
D. Gamma rays
Correct Answer: B
Rationale:
MRI uses strong magnetic fields and radiofrequency pulses, not ionizing radiation
like X-rays or gamma rays.
Question 2
What is the main magnetic field in MRI called?
A. B0 field
B. B1 field
C. Gradient field
D. RF field
Correct Answer: A
Rationale:
The main static magnetic field is called B0.
,Question 3
What particle is primarily imaged in MRI?
A. Electrons
B. Protons
C. Neutrons
D. Ions
Correct Answer: B
Rationale:
MRI primarily detects hydrogen protons in water and fat.
Question 4
What is the role of radiofrequency (RF) pulses in MRI?
A. Cool the magnet
B. Excite protons
C. Align the patient
D. Block radiation
Correct Answer: B
Rationale:
RF pulses excite hydrogen protons from equilibrium.
Question 5
What does T1 relaxation measure?
A. Transverse decay
B. Longitudinal recovery
C. Bone density
D. Blood flow
Correct Answer: B
,Rationale:
T1 measures recovery of longitudinal magnetization.
Question 6
What does T2 relaxation measure?
A. Longitudinal recovery
B. Transverse decay
C. Tissue heating
D. Proton density
Correct Answer: B
Rationale:
T2 measures loss of transverse magnetization.
Question 7
Which tissue appears brightest on T1-weighted images?
A. Cerebrospinal fluid
B. Fat
C. Bone
D. Air
Correct Answer: B
Rationale:
Fat has a short T1 time and appears bright.
Question 8
Which tissue appears bright on T2-weighted images?
A. Fat
B. Cerebrospinal fluid
, C. Bone
D. Muscle
Correct Answer: B
Rationale:
Fluid has long T2 relaxation time and appears bright.
Question 9
What is the function of gradient coils?
A. Produce RF pulses
B. Spatial encoding
C. Cooling system
D. Patient support
Correct Answer: B
Rationale:
Gradient coils localize signals in space.
Question 10
What does slice selection determine?
A. Patient position
B. Imaging plane location
C. Magnet strength
D. RF frequency only
Correct Answer: B
Rationale:
Slice selection defines imaging cross-section.
Question 11
Questions and Correct Answers
(Verified Answers) Plus Rationales 2026
Q&A | Instant Download Pdf
Question 1
What does MRI primarily use to create images?
A. X-rays
B. Radio waves and magnetic fields
C. Ultrasound waves
D. Gamma rays
Correct Answer: B
Rationale:
MRI uses strong magnetic fields and radiofrequency pulses, not ionizing radiation
like X-rays or gamma rays.
Question 2
What is the main magnetic field in MRI called?
A. B0 field
B. B1 field
C. Gradient field
D. RF field
Correct Answer: A
Rationale:
The main static magnetic field is called B0.
,Question 3
What particle is primarily imaged in MRI?
A. Electrons
B. Protons
C. Neutrons
D. Ions
Correct Answer: B
Rationale:
MRI primarily detects hydrogen protons in water and fat.
Question 4
What is the role of radiofrequency (RF) pulses in MRI?
A. Cool the magnet
B. Excite protons
C. Align the patient
D. Block radiation
Correct Answer: B
Rationale:
RF pulses excite hydrogen protons from equilibrium.
Question 5
What does T1 relaxation measure?
A. Transverse decay
B. Longitudinal recovery
C. Bone density
D. Blood flow
Correct Answer: B
,Rationale:
T1 measures recovery of longitudinal magnetization.
Question 6
What does T2 relaxation measure?
A. Longitudinal recovery
B. Transverse decay
C. Tissue heating
D. Proton density
Correct Answer: B
Rationale:
T2 measures loss of transverse magnetization.
Question 7
Which tissue appears brightest on T1-weighted images?
A. Cerebrospinal fluid
B. Fat
C. Bone
D. Air
Correct Answer: B
Rationale:
Fat has a short T1 time and appears bright.
Question 8
Which tissue appears bright on T2-weighted images?
A. Fat
B. Cerebrospinal fluid
, C. Bone
D. Muscle
Correct Answer: B
Rationale:
Fluid has long T2 relaxation time and appears bright.
Question 9
What is the function of gradient coils?
A. Produce RF pulses
B. Spatial encoding
C. Cooling system
D. Patient support
Correct Answer: B
Rationale:
Gradient coils localize signals in space.
Question 10
What does slice selection determine?
A. Patient position
B. Imaging plane location
C. Magnet strength
D. RF frequency only
Correct Answer: B
Rationale:
Slice selection defines imaging cross-section.
Question 11
