ARRT MRI PRACTICE EXAM & STUDY GUIDE
2025 | Original MRI Certification-Preparation Edition
600 Multiple-Choice Questions with Answers and Rationales
Independent practice material — not actual ARRT examination content.
Questions are original and are not copied from ARRT, a live examination, or a proprietary test
bank. This document is not ARRT-endorsed, professor-verified, or a prediction of exam results.
It is an independent study aid broadly organized around MRI content areas and the publicly
available ARRT MRI Content Specifications effective February 1, 2025; no official weighting or
secure item pool is represented.
Safety note: MRI access, implant conditions, contrast administration, emergency response, and
protocols must follow current facility policy, device labeling, radiologist direction, and applicable
professional guidance. This study guide does not replace supervised training or clinical
judgment.
Reference framework includes ARRT MRI Content Specifications (2025 implementation), the
ACR Manual on MR Safety (2024), the ACR Manual on Contrast Media (2024/2025 updates),
and standard MRI physics and image-quality references.
Page 1 of 205
,Table of Contents
Section 1: MRI Physics, Instrumentation & Image Formation (Questions 1–75)
...................................... 3
Section 2: Pulse Sequences, Parameters & Image Contrast (Questions 76–150)
...................................... 28
Section 3: MR Safety, Bioeffects & Patient Screening (Questions 151–225) ......................................
53
Section 4: Anatomy, Physiology & Cross-Sectional Imaging (Questions 226–300)
...................................... 79
Section 5: Pathology & Image Interpretation (Questions 301–375) ...................................... 104
Section 6: Artifacts, Quality Control & Troubleshooting (Questions 376–450) ......................................
129
Section 7: Contrast Agents, Medications & Patient Care (Questions 451–525)
...................................... 154
Section 8: Procedures, Protocols & ARRT Clinical Competency (Questions 526–600)
...................................... 180
Page 2 of 205
,Section 1: MRI Physics, Instrumentation & Image Formation
(Questions 1–75)
Q1: Which statement is correct about Larmor frequency and field strength?
A. The Larmor frequency falls by half as field strength rises
B. The Larmor frequency is unchanged because hydrogen has a fixed precession rate
C. Only gradient strength determines the Larmor frequency
D. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: D
Q2: Which principle should guide understanding of Larmor frequency and field strength?
A. The frequency becomes zero when the RF transmitter is off
B. Only gradient strength determines the Larmor frequency
C. The Larmor frequency falls by half as field strength rises
D. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: D
Q3: Situation: a scanner is changed from 1.5 T to 3 T and a technologist predicts how
hydrogen precession changes. Which foundational principle applies to Larmor frequency
and field strength?
A. Only gradient strength determines the Larmor frequency
B. The frequency becomes zero when the RF transmitter is off
C. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
D. The Larmor frequency is unchanged because hydrogen has a fixed precession rate
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: C
Page 3 of 205
, Q4: Clinical scenario: a scanner is changed from 1.5 T to 3 T and a technologist predicts
how hydrogen precession changes. Which answer best addresses the situation?
A. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
B. The frequency becomes zero when the RF transmitter is off
C. The Larmor frequency falls by half as field strength rises
D. The Larmor frequency is unchanged because hydrogen has a fixed precession rate
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: A
Q5: A technologist must interpret this situation: a scanner is changed from 1.5 T to 3 T
and a technologist predicts how hydrogen precession changes. Which conclusion or
next step is most appropriate?
A. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
B. The Larmor frequency is unchanged because hydrogen has a fixed precession rate
C. Only gradient strength determines the Larmor frequency
D. The Larmor frequency falls by half as field strength rises
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: A
Q6: Which statement is correct about equilibrium magnetization?
A. The net magnetization is longitudinal and aligned with B0 [CORRECT]
B. The net magnetization is zero because all spins cancel exactly
C. The net magnetization is parallel to the bore wall
D. The net magnetization is determined only by the receiver coil
Rationale: At equilibrium, the net magnetization vector is longitudinal, parallel to B0; RF
excitation tips it away from the longitudinal axis. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: A
Page 4 of 205
2025 | Original MRI Certification-Preparation Edition
600 Multiple-Choice Questions with Answers and Rationales
Independent practice material — not actual ARRT examination content.
Questions are original and are not copied from ARRT, a live examination, or a proprietary test
bank. This document is not ARRT-endorsed, professor-verified, or a prediction of exam results.
It is an independent study aid broadly organized around MRI content areas and the publicly
available ARRT MRI Content Specifications effective February 1, 2025; no official weighting or
secure item pool is represented.
Safety note: MRI access, implant conditions, contrast administration, emergency response, and
protocols must follow current facility policy, device labeling, radiologist direction, and applicable
professional guidance. This study guide does not replace supervised training or clinical
judgment.
Reference framework includes ARRT MRI Content Specifications (2025 implementation), the
ACR Manual on MR Safety (2024), the ACR Manual on Contrast Media (2024/2025 updates),
and standard MRI physics and image-quality references.
Page 1 of 205
,Table of Contents
Section 1: MRI Physics, Instrumentation & Image Formation (Questions 1–75)
...................................... 3
Section 2: Pulse Sequences, Parameters & Image Contrast (Questions 76–150)
...................................... 28
Section 3: MR Safety, Bioeffects & Patient Screening (Questions 151–225) ......................................
53
Section 4: Anatomy, Physiology & Cross-Sectional Imaging (Questions 226–300)
...................................... 79
Section 5: Pathology & Image Interpretation (Questions 301–375) ...................................... 104
Section 6: Artifacts, Quality Control & Troubleshooting (Questions 376–450) ......................................
129
Section 7: Contrast Agents, Medications & Patient Care (Questions 451–525)
...................................... 154
Section 8: Procedures, Protocols & ARRT Clinical Competency (Questions 526–600)
...................................... 180
Page 2 of 205
,Section 1: MRI Physics, Instrumentation & Image Formation
(Questions 1–75)
Q1: Which statement is correct about Larmor frequency and field strength?
A. The Larmor frequency falls by half as field strength rises
B. The Larmor frequency is unchanged because hydrogen has a fixed precession rate
C. Only gradient strength determines the Larmor frequency
D. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: D
Q2: Which principle should guide understanding of Larmor frequency and field strength?
A. The frequency becomes zero when the RF transmitter is off
B. Only gradient strength determines the Larmor frequency
C. The Larmor frequency falls by half as field strength rises
D. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: D
Q3: Situation: a scanner is changed from 1.5 T to 3 T and a technologist predicts how
hydrogen precession changes. Which foundational principle applies to Larmor frequency
and field strength?
A. Only gradient strength determines the Larmor frequency
B. The frequency becomes zero when the RF transmitter is off
C. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
D. The Larmor frequency is unchanged because hydrogen has a fixed precession rate
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: C
Page 3 of 205
, Q4: Clinical scenario: a scanner is changed from 1.5 T to 3 T and a technologist predicts
how hydrogen precession changes. Which answer best addresses the situation?
A. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
B. The frequency becomes zero when the RF transmitter is off
C. The Larmor frequency falls by half as field strength rises
D. The Larmor frequency is unchanged because hydrogen has a fixed precession rate
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: A
Q5: A technologist must interpret this situation: a scanner is changed from 1.5 T to 3 T
and a technologist predicts how hydrogen precession changes. Which conclusion or
next step is most appropriate?
A. The Larmor frequency approximately doubles because it is proportional to the main magnetic
field strength [CORRECT]
B. The Larmor frequency is unchanged because hydrogen has a fixed precession rate
C. Only gradient strength determines the Larmor frequency
D. The Larmor frequency falls by half as field strength rises
Rationale: For a given nucleus, Larmor frequency is proportional to B0; doubling field strength
approximately doubles the precession frequency. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: A
Q6: Which statement is correct about equilibrium magnetization?
A. The net magnetization is longitudinal and aligned with B0 [CORRECT]
B. The net magnetization is zero because all spins cancel exactly
C. The net magnetization is parallel to the bore wall
D. The net magnetization is determined only by the receiver coil
Rationale: At equilibrium, the net magnetization vector is longitudinal, parallel to B0; RF
excitation tips it away from the longitudinal axis. The other options conflict with the relevant
MR physics, anatomy, safety condition, or protocol.
Correct Answer: A
Page 4 of 205
