ARMRIT PHYSICS PRACTICE TEST EXAM
WITH CORRECT QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2025 – 2026
On a proton density image, two types of tissue that contain
very low concentrations of hydrogen and appear very
hypointense are: - ANSWERS-Cortical bone and lung.
In MR imaging, for a chemical substance to be affected by
the main magnetic field and the radio-wave it must contain
an: - ANSWERS-Odd number of total protons and neutrons.
The T2 process is also known as: - ANSWERS-spin-spin
Tissues that are efficient at both T1 and T2 interactions have
low (short) relaxation times, and therefore have: -
ANSWERS-high relaxation rates
, After a 90 degree radio-frequency pulse, the net
magnetization vector begins to return to equilibrium. When
the NMV is half-way between transverse and equilibrium,
what are the magnitudes of the longitudinal component
and the transverse component? - ANSWERS-Longitudinal
component = greater than zero/transverse component =
greater than zero.
When is the net magnetization vector at its maximum
magnitude? - ANSWERS-At equilibrium.
The Larmor frequency of hydrogen protons in a 1.5 Tesla
magnetic field is: - ANSWERS-63.9 MHz/Tesla.
To describe the uniformity of the MRI system's main
magnetic field, the term employed is: - ANSWERS-
Homogeneity.
Tissues that are very efficient at spin-lattice interactions
near the Larmor frequency, such as fatty tissues, should
have: - ANSWERS-Low T1 values and produces hyperintense
signals
WITH CORRECT QUESTIONS AND
CORRECTLY WELL DEFINED ANSWERS
LATEST ALREADY GRADED A+ 2025 – 2026
On a proton density image, two types of tissue that contain
very low concentrations of hydrogen and appear very
hypointense are: - ANSWERS-Cortical bone and lung.
In MR imaging, for a chemical substance to be affected by
the main magnetic field and the radio-wave it must contain
an: - ANSWERS-Odd number of total protons and neutrons.
The T2 process is also known as: - ANSWERS-spin-spin
Tissues that are efficient at both T1 and T2 interactions have
low (short) relaxation times, and therefore have: -
ANSWERS-high relaxation rates
, After a 90 degree radio-frequency pulse, the net
magnetization vector begins to return to equilibrium. When
the NMV is half-way between transverse and equilibrium,
what are the magnitudes of the longitudinal component
and the transverse component? - ANSWERS-Longitudinal
component = greater than zero/transverse component =
greater than zero.
When is the net magnetization vector at its maximum
magnitude? - ANSWERS-At equilibrium.
The Larmor frequency of hydrogen protons in a 1.5 Tesla
magnetic field is: - ANSWERS-63.9 MHz/Tesla.
To describe the uniformity of the MRI system's main
magnetic field, the term employed is: - ANSWERS-
Homogeneity.
Tissues that are very efficient at spin-lattice interactions
near the Larmor frequency, such as fatty tissues, should
have: - ANSWERS-Low T1 values and produces hyperintense
signals
