1
Pass Your Maryland MRI Tech Exam in 2026/2027 –
Complete Accurate Practice Questions with Well-
Elaborated Answers & Rationales | 100% Verified
Solutions | Instant Download
Part 3: Practice Questions & Rationales (150+ Questions)
This section contains 150+ actual exam-style questions with verified answers and detailed rationales.
3.1 Physics & Image Formation
1. What is the most abundant element in the human body that is used for MRI?
• A) Oxygen
• B) Carbon
• C) Hydrogen
• D) Nitrogen
Correct Answer : C) Hydrogen
Rationale: Hydrogen has a single proton and a large gyromagnetic ratio, making it the principal nucleus
used in clinical MR imaging.
2. The Larmor frequency of hydrogen at 1.5 Tesla is approximately:
• A) 21.3 MHz
• B) 42.6 MHz
• C) 63.9 MHz
• D) 127.8 MHz
Correct Answer : C) 63.9 MHz
Rationale: Larmor equation: W₀ = γ × B₀. γ for hydrogen = 42.58 MHz/T. At 1.5T: 42.58 × 1.5 = 63.87
MHz.
3. A 90° RF pulse will tip the net magnetization vector into the:
• A) Longitudinal plane
,2
• B) Transverse plane
• C) Sagittal plane
• D) Coronal plane
Correct Answer : B) Transverse plane
Rationale: A 90° RF pulse flips the net magnetization from the longitudinal (z) axis into the transverse
(xy) plane, where it precesses and induces signal in the receiver coil. A 180° pulse inverts the
magnetization.
4. A flip angle of 90° maximizes the component of the net magnetization projected into the transverse
plane.
• A) True
• B) False
Correct Answer : A) True
Rationale: A 90° pulse tips all available longitudinal magnetization into the transverse plane, producing
the maximum signal (assuming TR is long enough for complete recovery).
5. T1 relaxation refers to:
• A) Spin-spin relaxation
• B) Longitudinal recovery
• C) Phase decay
• D) Transverse decay
Correct Answer : B) Longitudinal recovery
Rationale: T1 (longitudinal relaxation) is the time constant for the net magnetization to recover 63% of
its final amplitude along the longitudinal axis. T2 (transverse relaxation) is the decay of transverse
magnetization.
6. Which statement about T1 and T2 is FALSE?
• A) T1 relaxation refers to longitudinal recovery while T2 relaxation refers to transverse decay.
• B) T1 relaxation and T2 relaxation occur simultaneously.
• C) Echoes collected in the transverse plane demonstrate only T2 relaxation differences.
• D) T2 relaxation occurs much more quickly than T1 relaxation.
,3
Correct Answer : C) Echoes collected in the transverse plane demonstrate only T2 relaxation
differences.
Rationale: The statement is false because echoes collected in the transverse plane demonstrate both T2
and T2* (in gradient-echo) or pure T2 (in spin-echo) relaxation differences. They do not demonstrate
only T2 differences.
7. If a patient’s protons precess at approximately 21 MHz, what magnetic field strength is being
experienced?
• A) 0.25 T
• B) 0.5 T
• C) 1.0 T
• D) 1.5 T
Correct Answer : B) 0.5 T
Rationale: Using W₀ = γ × B₀ → B₀ = W₀ / γ = 21 MHz / 42.58 MHz/T = 0.493 T ≈ 0.5 T.
8. The energy used to form MRI images is ______ the patient’s tissues.
• A) Emitted from
• B) Attenuated by
• C) Amplified from
• D) Reflected off
Correct Answer : A) Emitted from
Rationale: In MRI, the patient’s tissues emit RF energy (the MR signal) after being excited by the RF
pulse. This signal is then detected by the receiver coil.
9. The precessional frequency of a hydrogen nucleus is determined by the:
• A) Flip angle
• B) Gyromagnetic ratio
• C) Magnetic field strength
• D) Both B and C
Correct Answer : D) Both B and C
Rationale: The Larmor equation (W₀ = γ × B₀) shows that precessional frequency depends on both the
gyromagnetic ratio (γ) and the magnetic field strength (B₀).
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10. Increasing the field strength from 1.5T to 3T will cause the SNR to:
• A) Decrease
• B) Remain the same
• C) Increase
• D) Double
Correct Answer : C) Increase
Rationale: SNR increases at higher field strengths because the net magnetization vector (NMV) also
increases in size, producing a stronger signal.
11. Which of the following sequences would produce a bright CSF signal?
• A) T1-weighted spin-echo
• B) T2-weighted fast spin-echo
• C) FLAIR
• D) STIR
Correct Answer : B) T2-weighted fast spin-echo
Rationale: On T2-weighted images, fluids (including CSF) appear bright because they have long T2
relaxation times. FLAIR nulls CSF, making it dark.
12. FLAIR sequences are designed to:
• A) Suppress fat signal
• B) Suppress CSF signal
• C) Increase T1 contrast
• D) Decrease scan time
Correct Answer : B) Suppress CSF signal
Rationale: FLAIR (Fluid-Attenuated Inversion Recovery) uses a long TI to null the signal from CSF,
allowing better visualization of periventricular lesions such as multiple sclerosis plaques.
13. On a T1-weighted image, which tissue appears brightest?
• A) Cerebrospinal fluid (CSF)
• B) Fat
Pass Your Maryland MRI Tech Exam in 2026/2027 –
Complete Accurate Practice Questions with Well-
Elaborated Answers & Rationales | 100% Verified
Solutions | Instant Download
Part 3: Practice Questions & Rationales (150+ Questions)
This section contains 150+ actual exam-style questions with verified answers and detailed rationales.
3.1 Physics & Image Formation
1. What is the most abundant element in the human body that is used for MRI?
• A) Oxygen
• B) Carbon
• C) Hydrogen
• D) Nitrogen
Correct Answer : C) Hydrogen
Rationale: Hydrogen has a single proton and a large gyromagnetic ratio, making it the principal nucleus
used in clinical MR imaging.
2. The Larmor frequency of hydrogen at 1.5 Tesla is approximately:
• A) 21.3 MHz
• B) 42.6 MHz
• C) 63.9 MHz
• D) 127.8 MHz
Correct Answer : C) 63.9 MHz
Rationale: Larmor equation: W₀ = γ × B₀. γ for hydrogen = 42.58 MHz/T. At 1.5T: 42.58 × 1.5 = 63.87
MHz.
3. A 90° RF pulse will tip the net magnetization vector into the:
• A) Longitudinal plane
,2
• B) Transverse plane
• C) Sagittal plane
• D) Coronal plane
Correct Answer : B) Transverse plane
Rationale: A 90° RF pulse flips the net magnetization from the longitudinal (z) axis into the transverse
(xy) plane, where it precesses and induces signal in the receiver coil. A 180° pulse inverts the
magnetization.
4. A flip angle of 90° maximizes the component of the net magnetization projected into the transverse
plane.
• A) True
• B) False
Correct Answer : A) True
Rationale: A 90° pulse tips all available longitudinal magnetization into the transverse plane, producing
the maximum signal (assuming TR is long enough for complete recovery).
5. T1 relaxation refers to:
• A) Spin-spin relaxation
• B) Longitudinal recovery
• C) Phase decay
• D) Transverse decay
Correct Answer : B) Longitudinal recovery
Rationale: T1 (longitudinal relaxation) is the time constant for the net magnetization to recover 63% of
its final amplitude along the longitudinal axis. T2 (transverse relaxation) is the decay of transverse
magnetization.
6. Which statement about T1 and T2 is FALSE?
• A) T1 relaxation refers to longitudinal recovery while T2 relaxation refers to transverse decay.
• B) T1 relaxation and T2 relaxation occur simultaneously.
• C) Echoes collected in the transverse plane demonstrate only T2 relaxation differences.
• D) T2 relaxation occurs much more quickly than T1 relaxation.
,3
Correct Answer : C) Echoes collected in the transverse plane demonstrate only T2 relaxation
differences.
Rationale: The statement is false because echoes collected in the transverse plane demonstrate both T2
and T2* (in gradient-echo) or pure T2 (in spin-echo) relaxation differences. They do not demonstrate
only T2 differences.
7. If a patient’s protons precess at approximately 21 MHz, what magnetic field strength is being
experienced?
• A) 0.25 T
• B) 0.5 T
• C) 1.0 T
• D) 1.5 T
Correct Answer : B) 0.5 T
Rationale: Using W₀ = γ × B₀ → B₀ = W₀ / γ = 21 MHz / 42.58 MHz/T = 0.493 T ≈ 0.5 T.
8. The energy used to form MRI images is ______ the patient’s tissues.
• A) Emitted from
• B) Attenuated by
• C) Amplified from
• D) Reflected off
Correct Answer : A) Emitted from
Rationale: In MRI, the patient’s tissues emit RF energy (the MR signal) after being excited by the RF
pulse. This signal is then detected by the receiver coil.
9. The precessional frequency of a hydrogen nucleus is determined by the:
• A) Flip angle
• B) Gyromagnetic ratio
• C) Magnetic field strength
• D) Both B and C
Correct Answer : D) Both B and C
Rationale: The Larmor equation (W₀ = γ × B₀) shows that precessional frequency depends on both the
gyromagnetic ratio (γ) and the magnetic field strength (B₀).
, 4
10. Increasing the field strength from 1.5T to 3T will cause the SNR to:
• A) Decrease
• B) Remain the same
• C) Increase
• D) Double
Correct Answer : C) Increase
Rationale: SNR increases at higher field strengths because the net magnetization vector (NMV) also
increases in size, producing a stronger signal.
11. Which of the following sequences would produce a bright CSF signal?
• A) T1-weighted spin-echo
• B) T2-weighted fast spin-echo
• C) FLAIR
• D) STIR
Correct Answer : B) T2-weighted fast spin-echo
Rationale: On T2-weighted images, fluids (including CSF) appear bright because they have long T2
relaxation times. FLAIR nulls CSF, making it dark.
12. FLAIR sequences are designed to:
• A) Suppress fat signal
• B) Suppress CSF signal
• C) Increase T1 contrast
• D) Decrease scan time
Correct Answer : B) Suppress CSF signal
Rationale: FLAIR (Fluid-Attenuated Inversion Recovery) uses a long TI to null the signal from CSF,
allowing better visualization of periventricular lesions such as multiple sclerosis plaques.
13. On a T1-weighted image, which tissue appears brightest?
• A) Cerebrospinal fluid (CSF)
• B) Fat
