Animated Pulse Sequences

Animations showing the traversal of k-space during different pulse sequences can be found at the following links. As you watch them, remember the road rules for k-space: We start in the middle of k-space, and the strength and direction of the magnetic field gradient determines our velocity in k-space at each point in time.

Gradient echo https://www.dropbox.com/s/xdnkjj4hgg79dia/GradientEcho.mov?dl=0

Gradient echo EPI (as used for BOLD imaging) https://www.dropbox.com/s/4t2j6x84g8ua7yl/GE-EPI.mov?dl=0

Radial sampling https://www.dropbox.com/s/ckw6m21x9e5aihc/Radial.mov?dl=0

Spiral imaging https://www.dropbox.com/s/gpbw16okaka5qdl/Spiral.mov?dl=0

Spin Echo https://www.dropbox.com/s/sbqt2iblvcx7y0k/SpinEcho.mov?dl=0

Spin Echo EPI (used in diffusion imaging) https://www.dropbox.com/s/ah0exr9qjoy5hn9/SE-EPI.mov?dl=0