# Spiral.m

2D imaging sequence with spiral sampling of the k-space.

## Syntax

    mri=spiral_pulse_sequence(spin_system,parameters,H,R,K,G,F)


## Description

Reasonable description of what the function does and how.

## Arguments

     parameters.t_echo     - echo time, seconds

parameters.spiral_frq - frequency of the spiral, Hz

parameters.spiral_dur - duration of the spiral, seconds

of the spiral, T/m


## Outputs

    mri - MRI image with square sinebell apodisation



## Examples

See spiral_2d.m file in examples/imaging directory.

## Notes

Prior to being Fourier transformed, the spiral is resampled onto a suitable square grid - change the sequence to output spiral_x, spiral_y and spiral_z variables if you plan to process the data in a different way.