sigpy.mri.rf.slr.dz_hadamard_b¶

sigpy.mri.rf.slr.dz_hadamard_b(n=128, g=5, gind=1, tb=4, d1=0.01, d2=0.01, shift=32)[source]¶

Design a pulse with hadamard encoding

Parameters:	n (int) – number of time points. g (int) – order of the Hadamard matrix. gind (int) – index of vector to use from Hadamard matrix for encoding. tb (int) – time bandwidth product. d1 (float) – passband ripple level in :math:’M_0^{-1}’. d2 (float) – stopband ripple level in :math:’M_0^{-1}’. shift (int) – n time points shift of pulse.
Returns:	SLR beta parameter.
Return type:	b (array)

References

Souza, S.P., Szumowski, J., Dumoulin, C.L., Plewes, D.P. & Glover, G. ‘Sima: Simultaneous multislice acquisition of MR images by hadamard - encoded excitation. J.Comput.Assist.Tomogr. 12, 1026–1030(1988).