The purpose of the code is to take a constant-gradient excitation and transform it to a minimum-time B1 and gradient pair that has the identical spatial excitation profile. The minimum-time design is subject to given gradient amplitude and slew-rate limits and RF amplitude limits. An example is shown below. A "standard" RF pulse and constant gradient waveform are shown at left. The minimum-time VERSE equivalent pair (subject to hardware limits) are shown at right.
You will need to compile the MEX function
code for your Matlab version - it has been tested on version 6.5.
Otherwise you can just use the functions in mintverse.c, primarily
the function called int mintverse(...)
.
For the simple example shown above, simply type, "exampleverse" in Matlab.
Otherwise, "help mintverse" will also help you invoke the functions.
Last updated Sept 24, 2004