These MetaPost macros draw simple but publication-quality MRI pulse sequence diagrams for TeX documents, by describing RF and gradients events as a series of logical objects along lines.
This a fork of the pulses macros by Mark White, which was originally published in 2004.
Macros are in pulses.mp. Several example sequences are in seq.mp.
Many TeX installations come with MetaPost so you might well have it
already. Running mpost seq.mp will create a series of numbered
postscript fragments, one for each figure, suitable for inclusion with
TeX or LaTeX.
Getting fonts right in MetaPost can be complex. Depending on your
installation and how you want to use the output, you may need to
comment or change the prologues and defaultfont lines at the top of
pulses.mp and/or the infont "Symbol" lines in seq.mp.
If you're an MRI scientist (which I guess you are, if you've made it this far down the page) you may notice that figure 2 has a physics error: the readout gradient starts during the excitation pulse. Fortunately somebody spotted that in the draft these came from.
Written by Mark White, mark [at] celos.net, in 2004.
There didn't seem to be many straightforward tools for this in 2004, so I published the files online here with some examples and comments. In 2016 I released the same code under a clear 2-clause BSD licence here.
The 2016 release (1.0) is identical apart from a few lines in the header comments referring to the licence.
Both files - the macros and the example sequence diagrams (which were taken from a draft of my PhD thesis) - are released under the 2-clause BSD licence. See COPYING.txt in the distribution for details.
If you do anything useful with this code, or if you have any comments or patches, I'd love to hear from you - email mark [at] celos.net.