mrpro.phantoms.coils.birdcage_2d

mrpro.phantoms.coils.birdcage_2d(n_coils: int, image_dimensions: SpatialDimension[int], relative_radius: float = 1.5, normalize_with_rss: bool = True) → Tensor[source]

Numerical simulation of 2D Birdcage coil sensitivities.

This function is strongly inspired by ISMRMRD Python Tools [ISMc]. The associated license information can be found at the end of this file.

Parameters:

n_coils (int) – number of coil elements
image_dimensions (SpatialDimension[int]) – number of pixels in the image in y and x direction
relative_radius (float, default: 1.5) – relative radius of birdcage
normalize_with_rss (bool, default: True) – If set to true, the calculated sensitivities are normalized by the root-sum-of-squares

Returns:

Coil sensitivities. Shape: (1, n_coils, 1, image_dimensions.y, image_dimensions.x)

References