History Flashcards
is a technique that uses a magnetic field and radio waves to create detailed images of the organs and tissues within your body
Magnetic resonance imaging (MRI)
discovered the Rotating Magnetic Field
Nikola Tesla
Nikola Tesla discovered the Rotating Magnetic Field in ___ in ____.
1882, Hungary
In ___, the “Tesla Unit” was proclaimed.
1956
All MRI machines are calibrated in “ ___”.
Tesla Units
In ___, ____, observed
the quantum phenomenon dubbed nuclear magnetic resonance (NMR).
1937, Professor Isidor I. Rabi
He recognized that the atomic nuclei show their presence by absorbing or emitting radio waves when exposed to a sufficiently strong magnetic field.
Professor Isidor I. Rabi
: Established method to measure a magnetic dipole moment
Otto Stern
In ____, _______, a scientist credited with the fundamental discoveries leading to MRI.
1946, Felix Bloch and Edward Purcell
_____, a physician, discovered that hydrogen signal in cancerous tissue is different from that of healthy tissue because tumors contain more water. More water means more hydrogen atoms. When the MRI machine was switched off, the bath of radio waves from cancerous tissue will linger longer then those from the healthy tissue
Raymond Damadian
In___, _____, a chemist and
an NMR pioneer that produced the first
NMR image.
1973, PAUL LAUTERBUR
On _____, the first
human scan was made as the
first MRI prototype.
(The process took 5 hours)
July 3, 1977
transformed Lauterbur’s discoveries into a practical technology in medicine by developing a way of using the nonuniformities, or gradients, introduced in the magnetic field to identify
differences in the resonance signals more precisely. He also created new mathematical methods for
quickly analyzing information in the signal and showed how to attain extremely rapid imaging.
Peter Mansfield
