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ARRT LMRT EXAM –WITH Q & A 2024 $20.99   Add to cart

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ARRT LMRT EXAM –WITH Q & A 2024

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  • ARRT LMRT –WITH Q & A 2024 Hydrogen - CORRE
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  • ARRT LMRT –WITH Q & A 2024 Hydrogen - CORRE

ARRT LMRT EXAM –WITH Q & A 2024 Hydrogen - CORRECT ANSWERNuclei in fat and fat Differences in chemical shift at.... - CORRECT ANSWER1T-3.5 T parts per million majority of nuclei align.... - CORRECT ANSWERParallel Net magnetization vector (NVM) - CORRECT ANSWERExcess number of H prot...

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  • October 5, 2024
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  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • ARRT LMRT –WITH Q & A 2024 Hydrogen - CORRE
  • ARRT LMRT –WITH Q & A 2024 Hydrogen - CORRE
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janetheuri
ARRT LMRT EXAM –WITH Q & A 2024


Hydrogen - CORRECT ANSWERNuclei in fat and fat

Differences in chemical shift at.... - CORRECT ANSWER1T-3.5 T parts per million

majority of nuclei align.... - CORRECT ANSWERParallel

Net magnetization vector (NVM) - CORRECT ANSWERExcess number of H protons
aligned with magnetic field

Larmar equation: W? - CORRECT ANSWERPrecesional frequency

Larmar equation: Y? - CORRECT ANSWERGyromagnetic ratio

Larmar equation: B0 - CORRECT ANSWERMagnetic strength

Gyromagnetic ratio of H at 1T? - CORRECT ANSWER42.58 MHz/T (center frequency)

Gyromagnetic ratio at 1.5T? - CORRECT ANSWER63.86 MHz/T ( center frequency)

Out of phase (incoherent) - CORRECT ANSWERMagnetic moments are at different
places along precessional path.

In phase (coherent) - CORRECT ANSWERMagnetic moments are at same place

Resonance - CORRECT ANSWEROscillating object is expose to a frequency having
the same frequency of the object. Transmitting RF excitation pulse.

For MR Signal, RD pulse must match ... - CORRECT ANSWERPrecessional frequency
of H

Excitation - CORRECT ANSWERApplication of RF pulse that cause resonance,
process of moving NMV away from Z -axis

Relaxation - CORRECT ANSWERProcess by which spins lose energy

Free induction decay (FID) - CORRECT ANSWERLoss of signal due to relaxation. Is
produced from RF pulse

Must verify patient identity with... - CORRECT ANSWER2 identifiers, name & DOB

When investigating implants, check for the - CORRECT ANSWERYear, make, and
model

, Contrast brands - CORRECT ANSWERGadavist, Multihance, Magnevist, Eovist,
prohance, dotarem

Patients with risk factors with contrast should obtian.... - CORRECT
ANSWERGlomerukar filtration rate (GFR0 and Creatine prior to exam

Risk factors for contrast - CORRECT ANSWEROver 70 years, hx of hypertension,
diabetes, renal disease

Normal CR: - CORRECT ANSWER0.6-1.5mg/dl

Considered renal failure and in need of dialysis - CORRECT ANSWERGFR<30, CR
>2.4

Nephrogenic systemic fibrosis (NSF): - CORRECT ANSWERRare disease, occcurs in
renal failure pts. Thickening and darkening of skin, affects heart, kidneys and lunges.
Possible reaction to gadolinium.

Nonsystemic reactions: - CORRECT ANSWERContrast reactions: flushing, hives &
nausea

Benedryl - CORRECT ANSWERMinor reactions (hives, nausea)

Severe reactions like bronchospasms may require - CORRECT ANSWEREpinephrine

High risk pts can be pre-medicated with _______________ to reduce risk of reactions -
CORRECT ANSWERsteroids or Benadryl

Gadolinium - CORRECT ANSWERMetal-based compound surrounded by chelates,
allowing it to pass through the body and overcome its toxicity

- CORRECT ANSWERInfiltration of contrast into surrounding tissues. Remove
needle/IV, hold pressure until bleeding stops, apple ice. Must document chart.

- CORRECT ANSWER120/80 mmHG

- CORRECT ANSWERHighest pressure when heart contrast

- CORRECT ANSWERLowest pressure when heart relaxes

- CORRECT ANSWERAverage pressure during a cardiac cycle

- CORRECT ANSWEROver 140/90

- CORRECT ANSWER90/60

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