Magnetic resonance imaging (MRI) was discovered in 1947 by two physicists and the first clinical images were obtained in 1977. MRI uses strong magnetic fields between 1-9 Tesla to align hydrogen atoms in the body and radio waves to elicit signals to form images. The document provides a brief history of MRI and discusses magnetic fields, relaxation processes, and pulse sequences used to generate MRI images.

1. c vector
MRI PHYSICS.
Dr: ABD ALLAH NAZEER. MD.

2. History of MRI.
-Discovered
simultaneously by
2 physicists in 1947.
-Felix Bloch.
-Edward Mills Purcell.
-First clinical images
obtained in 1977.
-Paul Lauterbur
-Peter Mansfield.
-Raymond Damadian.

3. Magnetic Field
-Magnetic field is
measured in Tesla(T).
-Clinical MRI performed
at 1-9 Tesla.
-Earth magnetic field =
0.00003 Tesla.

18. Odd number. Paired number.

45. Relaxation

92. Example for 180 pulse sequence.
With time energy lost.

145. Thank You.