MRI Registry Review – Questions Answered
Correctly By Expert
Who discovered X-ray? Correct Answer - Wilhelm Rontgen in
1895 and was awarded the first Nobel Prize in Physics in 1901
What is Resonance Correct Answer - The Physical principle
that allows energy to be transferred efficiently from one object to
another, causing the receiving object to vibrate at the same
frequency as the sender
NMR Spectrometers Correct Answer - Laboratory instruments
that are used to determine the molecular composition of unknown
samples
What did Damadian do? Correct Answer - 1974 he use a
modified spectrometer to produce a MR image of a Rat tumor
Who received the Nobel Prize for Physiology or Medicine for MRI in
2003 Correct Answer - Paul Lauterbur and Peter Mansfield
Advantages of MRI Correct Answer - No harmful effects, Cross-
sectional images, Images in any plane, digital images and exquisite
tissue differentiation
What do MR images represent? Correct Answer - Thin slices of
an object rather than projection "shadows" of an object and , thus,
do not superimpose anatomy
Digital Information Correct Answer - not necessarily more or
less accurate than its analog counterpart; accuracy is determined by
how finely it is sampled.
, Digital Information facts Correct Answer - easily stored on a
computer, always accurately reproduced from the stored data, can
be easily manipulated and processes on a computer, can be stored
on a optical disks or CDs, can be electronically transported to
remote viewing facilities.
Basic requirements for MRI Correct Answer - Hydrogen
protons; large/strong magnet; radio frequency
Why is hydrogen atoms used in MRI? Correct Answer -
because it is plentiful and it contains an odd number of protons.
Electromagnetism Correct Answer - connection between
electricity and magnetism which causes a magnetic field to be
created whenever a charged particle moves
Net Magnetization Correct Answer - magnetization that
remains after those protons which are lined up against the magnetic
field have canceled an equal number aligned with the field
Net Magnetization direction Correct Answer - The protons line
up in the same direction as the magnetic field of the MR magnet
Precession Correct Answer - The motion of the net
magnetization as it wobbles around the main magnetic field of the
MR system
Lamor Equation Correct Answer - The influence of the
magnetic field strength on the precessional frequency of the protons
net magnetization
F=KxB
F- Precessional or Larmor frequency
Correctly By Expert
Who discovered X-ray? Correct Answer - Wilhelm Rontgen in
1895 and was awarded the first Nobel Prize in Physics in 1901
What is Resonance Correct Answer - The Physical principle
that allows energy to be transferred efficiently from one object to
another, causing the receiving object to vibrate at the same
frequency as the sender
NMR Spectrometers Correct Answer - Laboratory instruments
that are used to determine the molecular composition of unknown
samples
What did Damadian do? Correct Answer - 1974 he use a
modified spectrometer to produce a MR image of a Rat tumor
Who received the Nobel Prize for Physiology or Medicine for MRI in
2003 Correct Answer - Paul Lauterbur and Peter Mansfield
Advantages of MRI Correct Answer - No harmful effects, Cross-
sectional images, Images in any plane, digital images and exquisite
tissue differentiation
What do MR images represent? Correct Answer - Thin slices of
an object rather than projection "shadows" of an object and , thus,
do not superimpose anatomy
Digital Information Correct Answer - not necessarily more or
less accurate than its analog counterpart; accuracy is determined by
how finely it is sampled.
, Digital Information facts Correct Answer - easily stored on a
computer, always accurately reproduced from the stored data, can
be easily manipulated and processes on a computer, can be stored
on a optical disks or CDs, can be electronically transported to
remote viewing facilities.
Basic requirements for MRI Correct Answer - Hydrogen
protons; large/strong magnet; radio frequency
Why is hydrogen atoms used in MRI? Correct Answer -
because it is plentiful and it contains an odd number of protons.
Electromagnetism Correct Answer - connection between
electricity and magnetism which causes a magnetic field to be
created whenever a charged particle moves
Net Magnetization Correct Answer - magnetization that
remains after those protons which are lined up against the magnetic
field have canceled an equal number aligned with the field
Net Magnetization direction Correct Answer - The protons line
up in the same direction as the magnetic field of the MR magnet
Precession Correct Answer - The motion of the net
magnetization as it wobbles around the main magnetic field of the
MR system
Lamor Equation Correct Answer - The influence of the
magnetic field strength on the precessional frequency of the protons
net magnetization
F=KxB
F- Precessional or Larmor frequency
