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ARMRIT MRI 2024 Practice Exam 1 With 100% Correct And Verified Answers 2024
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ARMRIT MRI 2024 Practice Exam 1 With 100% Correct And Verified Answers 2024
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ARMRIT MRI 2024 Practice Exam 1 With 100% Correct And Verified Answers 2024An equation derived to predict the MR signal intensity of a particular tissue as the result of a Spin-echo pulse sequence is the:
A) Larmor equation
B) Bloch equation
C) Phase shifts formula
D) Resonance frequency formula
B) Bloch equation
The component Mz is most associated with:
A) Transverse to Bo; T2 relaxation; transverse magnetization
B) Anti-parallel to Bo; T2 relaxation; net magnetization
C) Parallel to Bo; T1 relation; longitudinal magnetization
D)Perpendicular to Bo; T2 decay; FID
C) Parallel to Bo; T1 relation; longitudinal magnetization
The main magnetic field of MRI systems in clinical use must meet an acceptable specification of:
A) 10-15 PPM
B) 20-30 PPM
C) 40-50 PPM
D) 60-80 PPM
B) 20-30 PPM
Of the following statements., which describes part of the basics MR imagining process?
A) A patient is placed isocenter in a inhomogeneous magnetic field
B) The patient is exposed to ionizing radiation
C) The generated image contains hypertense and hypodense areas
D) RF signals interact with hydrogen protons
D) RF signals interact with hydrogen protons
When is the net magnetization vector at its maximum magnitude?
A) Transverse to Bo
B) Anti parallels Bo C) Parallel to B1
D) At equilibrium
D) At equilibrium
What is the gyro-magnetic ration of hydrogen?
A) 17.23 MHz
B) 11.26 MHz
C) 42.58 MHz
D) 40.05MHz
C) 42.58 MHz
The transmit radio-frequency coil generates a second electromagnetic field to the hydrogen protons. This field is designated:
A) Bo
B) Bz
C) B1
D) Bxy
C) B1
When type of receiver radio-frequency coil placed in the main magnetic field of the MRI system, the hydrogen protons will:
A) Solenoid coils
B) Maxwell coils
C) Surface coils
D) Golay coils
C) Surface coils
Once the patients area of interest is placed in the main magnetic field of the MRI system, the hydrogen protons will:
A) Process parallel to B1
B) Process parallel to Bo
C) Process orthogonal to Bo
D) Process randomly in Bo
B) Process parallel to Bo
The basic process of MR signal generation contains two basic steps, they are:
A) Parallel alignment and anti-parallel alignment
B) Stimulation and relaxation
C) Magnetization and ionization
D) Spatial localization and Fourier transform
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