Module dipole 

Dipole kernel for QSM

The dipole kernel describes the relationship between magnetic susceptibility and the induced magnetic field in MRI. In k-space:

D(k) = 1/3 - (k·B)² / |k|²

where B is the B0 field direction (typically [0, 0, 1]).

Functions

dipole_kernel

Generate dipole kernel in k-space

dipole_kernel_default

Generate dipole kernel with default B direction (0, 0, 1)

dipole_kernel_default_f32

Generate f32 dipole kernel with default B direction (0, 0, 1)

dipole_kernel_f32

Generate dipole kernel in k-space (f32 version for WASM performance)