ARRT MRI Exam Solution Manual Fully Solved Latest Update 2025 Already Passed
Hydrogen - Answers Nuclei in fat and fat
Differences in chemical shift at.... - Answers 1T-3.5 T parts per million
majority of nuclei align.... - Answers Parallel
Net magnetization vector (NVM) - Answers Excess number of H protons aligned with magnetic field
Larmar equation: W? - Answers Precesional frequency
Larmar equation: Y? - Answers Gyromagnetic ratio
Larmar equation: B0 - Answers Magnetic strength
Gyromagnetic ratio of H at 1T? - Answers 42.58 MHz/T (center frequency)
Gyromagnetic ratio at 1.5T? - Answers 63.86 MHz/T ( center frequency)
Out of phase (incoherent) - Answers Magnetic moments are at different places along precessional path.
In phase (coherent) - Answers Magnetic moments are at same place
Resonance - Answers Oscillating object is expose to a frequency having the same frequency of the
object. Transmitting RF excitation pulse.
For MR Signal, RD pulse must match ... - Answers Precessional frequency of H
Excitation - Answers Application of RF pulse that cause resonance, process of moving NMV away from Z -
axis
Relaxation - Answers Process by which spins lose energy
Free induction decay (FID) - Answers Loss of signal due to relaxation. Is produced from RF pulse
Must verify patient identity with... - Answers 2 identifiers, name & DOB
When investigating implants, check for the - Answers Year, make, and model
Contrast brands - Answers Gadavist, Multihance, Magnevist, Eovist, prohance, dotarem
Patients with risk factors with contrast should obtian.... - Answers Glomerukar filtration rate (GFR0 and
Creatine prior to exam
Risk factors for contrast - Answers Over 70 years, hx of hypertension, diabetes, renal disease
Normal CR: - Answers 0.6-1.5mg/dl
Considered renal failure and in need of dialysis - Answers GFR<30, CR >2.4
Hydrogen - Answers Nuclei in fat and fat
Differences in chemical shift at.... - Answers 1T-3.5 T parts per million
majority of nuclei align.... - Answers Parallel
Net magnetization vector (NVM) - Answers Excess number of H protons aligned with magnetic field
Larmar equation: W? - Answers Precesional frequency
Larmar equation: Y? - Answers Gyromagnetic ratio
Larmar equation: B0 - Answers Magnetic strength
Gyromagnetic ratio of H at 1T? - Answers 42.58 MHz/T (center frequency)
Gyromagnetic ratio at 1.5T? - Answers 63.86 MHz/T ( center frequency)
Out of phase (incoherent) - Answers Magnetic moments are at different places along precessional path.
In phase (coherent) - Answers Magnetic moments are at same place
Resonance - Answers Oscillating object is expose to a frequency having the same frequency of the
object. Transmitting RF excitation pulse.
For MR Signal, RD pulse must match ... - Answers Precessional frequency of H
Excitation - Answers Application of RF pulse that cause resonance, process of moving NMV away from Z -
axis
Relaxation - Answers Process by which spins lose energy
Free induction decay (FID) - Answers Loss of signal due to relaxation. Is produced from RF pulse
Must verify patient identity with... - Answers 2 identifiers, name & DOB
When investigating implants, check for the - Answers Year, make, and model
Contrast brands - Answers Gadavist, Multihance, Magnevist, Eovist, prohance, dotarem
Patients with risk factors with contrast should obtian.... - Answers Glomerukar filtration rate (GFR0 and
Creatine prior to exam
Risk factors for contrast - Answers Over 70 years, hx of hypertension, diabetes, renal disease
Normal CR: - Answers 0.6-1.5mg/dl
Considered renal failure and in need of dialysis - Answers GFR<30, CR >2.4
