ARMRIT EXAM PREP 2025/2026: 400 PRACTICE QUESTIONS & VERIFIED ANSWERS COVERING MRI PHYSICS, PATIENT CARE, IMAGING PROCEDURES, AND DATA ACQUISITION /ALREADY GRADED A+ [ MOST RECENT!!]

ARMRIT EXAM PREP 2025/2026: 400
PRACTICE QUESTIONS & VERIFIED
ANSWERS COVERING MRI PHYSICS,
PATIENT CARE, IMAGING PROCEDURES,
AND DATA ACQUISITION /ALREADY
GRADED A+ [ MOST RECENT!!]
Question 1: The T1 process is also known as:


• Answer: Spin-Lattice relaxation


Question 2: A 90-degree radio-frequency pulse will alter the net magnetization

vector. Another effect is:


• Answer: The hydrogen protons will have phase coherence


Question 3: Which type of electromagnetic coils produce smaller magnetic fields

that allow spatial localization to be performed?


• Answer: Gradient coils


Question 4: The Larmor frequency is determined by which equation?


• Answer: ω = γ × B₀


Question 5: What is the gyromagnetic ratio of hydrogen (¹H)?


• Answer: 42.58 MHz/T

,Question 6: At 1.5 Tesla, what is the Larmor frequency of hydrogen?


• Answer: 63.9 MHz


Question 7: What is the Larmor frequency of hydrogen at 3.0 Tesla?


• Answer: 127.8 MHz


Question 8: T2 relaxation is also known as:


• Answer: Spin-spin relaxation / Transverse relaxation


Question 9: T1 relaxation is also known as:


• Answer: Spin-lattice relaxation


Question 10: Which tissue generally has the shortest T1 relaxation time?


• Answer: Fat


Question 11: Which tissue generally has the longest T2 relaxation time?


• Answer: Cerebrospinal fluid (CSF)


Question 12: Which type of MRI magnet requires cryogen to cool magnetic coils to

4 degrees Kelvin?


• Answer: Superconductive


Question 13: Which cryogenic material can produce temperatures as low as 4

degrees Kelvin?

, • Answer: Liquid Helium


Question 14: Which type of MRI magnet requires no electricity to maintain its

magnetic field and can weigh from 18,000 lb. to 200,000 lb.?


• Answer: Permanent


Question 15: To describe the uniformity of the MRI system's main magnetic field,

the term employed is:


• Answer: Homogeneity


Question 16: The purpose of magnetic resonance angiography is to image the:


• Answer: Blood Flow


Question 17: Magnetic Resonance Imaging is derived from the process known as:


• Answer: Nuclear Magnetic Resonance (NMR)


Question 18: The introduction of gadolinium-based contrast enhancement agents

by intravenous injection can involve passing through an abnormal blood-brain

barrier. The tissue compartments involved are the:


• Answer: Intravascular to interstitial


Question 19: In a pulse sequence, transmitting an initial 90-degree radio-frequency

pulse will cause the net magnetization vector to:

, • Answer: Shift in both size and direction


Question 20: Which statement is true of the relaxation process?


• Answer: Without the effects of T2*, T2 decay continues


Question 21: Magnetism can be defined as the ability of certain substances to

attract:


• Answer: Iron, Cobalt, Nickel


Question 22: The components of the Gyro-magnetic ratio are:


• Answer: Magnetic moment to angular momentum


Question 23: T2 is the measurement of time for the transverse component of the net

magnetization vector to decrease what percentage of its maximum value after the

application of a 90-degree radio-frequency pulse?


• Answer: 37%


Question 24: The primary safety concern in the MRI environment due to the main

magnetic field is:


• Answer: The static B₀ field (projectile risk)


Question 25: A patient with a pacemaker cannot have an MRI because: