Issues

• Clarification on variable density spiral design

  mikgroup/sigpy#156 · Filter by author tomdstone opened on Aug 28, 2026

• spiral_varden() docstring appears to have wrong units for gslew argument

  bug
  mikgroup/sigpy#154 · Filter by author tomdstone opened on Aug 26, 2026

• spiral_varden(..., rewinder=True) errors

  bug
  mikgroup/sigpy#153 · Filter by author tomdstone opened on Aug 26, 2026

• _convolve_cuda fails as CuPy dropped bindings to cudnn after v14

  bug
  mikgroup/sigpy#151 · Filter by author Chenwei43 opened on Aug 11, 2026

• NUFFT forward returns NaN for certain near-edge coordinates at default oversamp (Kaiser–Bessel gridding)

  bug
  mikgroup/sigpy#150 · Filter by author sabbir-ahmed12 opened on Jul 21, 2026

• How to design an exciting rf pulse with a flip angle of 80deg?

  mikgroup/sigpy#147 · Filter by author ShannonZ opened on Jul 10, 2025

• sigpy.mri.samp.spiral

  mikgroup/sigpy#146 · Filter by author ZhengguoTan opened on Apr 6, 2025
  8

• sigpy.mri.util.tseg_off_res_b_ct() for a 3D image and 3D coordinates

  bug
  mikgroup/sigpy#139 · Filter by author joeyplum opened on Mar 29, 2024
  1

• Segfault in 1x1 conv2d backward pass when both Pytorch and sigpy are installed (cudnn version mismatch)

  bug
  mikgroup/sigpy#137 · Filter by author nishi951 opened on Dec 13, 2023

• adjoint of wavelet transform

  bug
  mikgroup/sigpy#134 · Filter by author hongtao-argmin opened on Nov 9, 2023

• The NUFFTadjoint result is very different from that of irt by jeff fessler in scale

  mikgroup/sigpy#133 · Filter by author Michaelsqj opened on Nov 7, 2023

• sp.linop.ConvolveData fails on GPU, works with numpy on CPU

  bug
  mikgroup/sigpy#119 · Filter by author ecat opened on Feb 7, 2023

• sigpy.mri.poisson hangs when used to generate 1d undersampling trajectories

  bug
  mikgroup/sigpy#115 · Filter by author ShannonZ opened on Aug 9, 2022

• sigpy.mri.poisson fails for specific calibration sizes

  bughelp wanted
  mikgroup/sigpy#111 · Filter by author fredwang25 opened on May 27, 2022
  1

• Sigpy.mri.poission with core dumped

  bughelp wanted
  mikgroup/sigpy#106 · Filter by author SZUHvern opened on Feb 10, 2022
  3

• Deprecation warning with np.float, np.bool, np.complex

  bug
  mikgroup/sigpy#105 · Filter by author ad12 opened on Feb 6, 2022
  5

• Return isodelay time in dzrf

  enhancement
  mikgroup/sigpy#104 · Filter by author ShannonZ opened on Dec 20, 2021
  4

  

• Broadcasting arrays with MPI requires types to be known.

  enhancement
  mikgroup/sigpy#103 · Filter by author sidward opened on Dec 17, 2021

• sigpy.mri.poisson hangs when seed & calib arguments are passed

  bughelp wanted
  mikgroup/sigpy#102 · Filter by author ad12 opened on Dec 6, 2021
  9

• Quadratic phase is missing in dzrf

  enhancement
  mikgroup/sigpy#98 · Filter by author ShannonZ opened on Sep 23, 2021
  3

• L2Reg error or misleading docs

  bughelp wanted
  mikgroup/sigpy#94 · Filter by author parthe opened on Aug 27, 2021
  3

• Implement GPU Wavelet transform

  enhancementhelp wanted
  mikgroup/sigpy#25 · Filter by author frankong opened on Jul 11, 2019
  8