Table 1. List of tomographic reconstruction methods included in TomoPy and ASTRA for two-dimensional parallel-beam geometries.

For more information about the FP, BP, FBP, ART, SIRT and SART methods, we refer to Kak & Slaney (2001 ▸ ▸). For the Gridrec, MLEM, OSEM, PML and CGLS methods, we refer to Dowd et al. (1999 ▸), Dempster et al. (1977 ▸), Hudson & Larkin (1994 ▸), Chang et al. (2004 ▸) and Hansen (1998 ▸), respectively.

TomoPy				ASTRA
Method	CPU	GPU		Method	CPU	GPU
ART	×			ART	×
BART	×			BP	×	×
Gridrec	×			CGLS	×	×
MLEM	×			FP	×	×
OSEM	×			FBP	×	×
PML	×			MLEM		×
OSPML	×			SART	×	×
SIRT	×			SIRT	×	×