tools.wavepsf

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tools.wavepsf#

bartorch.tools.wavepsf()#

Generate a wave PSF in hybrid space.

- Assumes the first dimension is the readout dimension.
- Only generates a 2 dimensional PSF.
- Use reshape and fmac to generate a 3D PSF.

3D PSF Example:

bart wavepsf        -x 768 -y 128 -r 0.1 -a 3000 -t 0.00001 -g 0.8 -s 17000 -n 6 wY
bart wavepsf -c -x 768 -y 128 -r 0.1 -a 3000 -t 0.00001 -g 0.8 -s 17000 -n 6 wZ
bart reshape 7 wZ 768 1 128 wZ wZ
bart fmac wY wZ wYZ

Runs bart wavepsf.

Parameters:

  • c (bool, default=False) – Set to use a cosine gradient wave (-c)

  • x (int | None, default=None) – Number of readout points (-x)

  • y (int | None, default=None) – Number of phase encode points (-y)

  • r (float | None, default=None) – Resolution of phase encode in cm (-r)

  • a (int | None, default=None) – Readout duration in microseconds. (-a)

  • t (float | None, default=None) – ADC sampling rate in seconds (-t)

  • g (float | None, default=None) – Maximum gradient amplitude in Gauss/cm (-g)

  • s (float | None, default=None) – Maximum gradient slew rate in Gauss/cm/second (-s)

  • n (int | None, default=None) – Number of cycles in the gradient wave (-n)

  • **extra (Any) – Further BART flags, passed through by name.

Returns:

output

Return type:

torch.Tensor

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