Animation Files

Each animation was generated using the RenderMan interface, which was created by Pixar for films like Toy Story. The animations were rendered using the Blue Moon Rendering Tools, which are a public-domain implementation of the RenderMan standard.

These movie files were encoded using the DivX codec, which doesn't yet come as a part of the Windows media player. So you'll need to download the free codec from here (don't get "DivX Pro"; the standard "DivX" will work and you won't be subjected to advertisements).

Four-chamber view of heart (mine), using conventional (spoiled) technique
Four-chamber view of heart (mine), using steady-state (SSFP) technique
Motion of a single spin as it precesses about the z axis
BONUS MATERIAL! Precessing magnetization induces current in an RF coil
GE magnet with birdcage coil inside generating radiofrequency (RF) magnetic field
90-degree tip, laboratory reference frame
90-degree tip, rotating reference frame
Relaxation from transverse plane to longitudinal axis
90-degree tip followed by dephasing of spins
Approach to steady state for a single spin with zero free precession during TR
Approach to steady state for a variety of spins with varying free precession during TR
Effect of bipolar gradient on moving spins
Effect of bipolar gradient on stationary spins
Progression of magnetization in ODESSA sequence, for moving spins
Progression of magnetization in ODESSA sequence, for stationary spins
Maximum-intensity projection of 3D data acquired in lower leg, showing arterial tree
Progression of magnetization for DEFT-like banding-free SSFP
Progression of magnetization for fat-suppressed FS-OSSFP

William R. Overall / wro@stanford.edu

Last modified: Fri Jul 12 14:08:38 PST 2002