ARMRIT Practice Test (MRI Technologist
Quick Reference and Study Guide
ARMRIT) with Complete Solutions!!
Magnetism can be defined as the ability of certain substances to attract: - ANSWER-
Iron, Cobalt, Nickel
The components of the Gyro-magnetic ratio are: - ANSWER-Magnetic moment to
angular momentum
Which type of electromagnetic coils produce smaller magnetic field which allow spatial
localization to be performed? - ANSWER-Gradient coils
Which type of MRI magnet requires cryogen to cool magnetic coils to 4 degrees Kelvin?
- ANSWER-Superconductive
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%
Which cryogenic material can produce temperature as low as 4 degrees Kelvin? -
ANSWER-Liquid Helium
The T1 process is also known as - ANSWER-Spin-Lattice
a 90 degree radio-frequency pulse will alter the net magnetization vector. Another effect
is: - ANSWER-The hydrogen protons will have phase coherence.
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
To describe the uniformity of the MRI system's main magnetic field, the term employed
is - ANSWER-Homogeneity
The purpose of magnetic resonance angiography is to image the - ANSWER-Blood
Flow
Magnetic Resonance Imaging is derived from the process known as: - ANSWER-
Nuclear Magnetic resonance
Quick Reference and Study Guide
ARMRIT) with Complete Solutions!!
Magnetism can be defined as the ability of certain substances to attract: - ANSWER-
Iron, Cobalt, Nickel
The components of the Gyro-magnetic ratio are: - ANSWER-Magnetic moment to
angular momentum
Which type of electromagnetic coils produce smaller magnetic field which allow spatial
localization to be performed? - ANSWER-Gradient coils
Which type of MRI magnet requires cryogen to cool magnetic coils to 4 degrees Kelvin?
- ANSWER-Superconductive
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%
Which cryogenic material can produce temperature as low as 4 degrees Kelvin? -
ANSWER-Liquid Helium
The T1 process is also known as - ANSWER-Spin-Lattice
a 90 degree radio-frequency pulse will alter the net magnetization vector. Another effect
is: - ANSWER-The hydrogen protons will have phase coherence.
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
To describe the uniformity of the MRI system's main magnetic field, the term employed
is - ANSWER-Homogeneity
The purpose of magnetic resonance angiography is to image the - ANSWER-Blood
Flow
Magnetic Resonance Imaging is derived from the process known as: - ANSWER-
Nuclear Magnetic resonance
