Acronyms
What does MRI stand for?
Magnetic Resonance Imaging
Felix Bloch and Edward Purcell discovered NMR during what decade?
1940's
What is the spinning and wobbling motion of protons called?
Precession
What zone is the MRI access area?
Zone I
What contrast agent is most commonly used in MRI?
Gadolinium
What does fMRI stand for?
Functional Magnetic Resonance Imaging
What element is most commonly used for imaging in MRI?
Hydrogen
What is it called when protons absorb RF energy that matches their frequency?
Resonance
What is the MRI technologist's main safety role comparable to?
Gatekeeper
T-2 weighted images are best a showing which feature as bright?
Fluid
What does TOF stand for?
Time of Flight
What type of radiation does MRI use?
Non-ionizing radiation?
What is the name of the specific frequency at which resonance happens?
Larmor
What zone has restricted access for screened patients and MRI personnel only?
Zone III
In the abdomen, MRI can be extra sensitive to what organ?
Liver
What does CNS stand for?
Central Nervous System
Permanent magnet
What MRI relaxation process involves energy transfer to the surrounding tissue?
T1 Relaxation
What is the MRI machine's action that causes a rapid escape of helium that displaces oxygen?
Quench
fMri records the active parts of the brain when introduced to a?
Stimuli
What does FLAIR stand for?
Fluid-Attenuated Inversion Recovery
What part of the MRI machine receives signals directly from the body or the area of interest?
Surface Coils
How do the protons align when protons are exposed to a magnetic field?
What device is used to prevent external RF interference in an MRI room?
Faraday cage
The lack of what allows for the visualization of bone marrow?
Bone artifact