d/or list mode reconstruction</span></h1><div  class = 'S1'><span>This page details on how to separately compute the forward and/or backward projections when using OMEGA.</span></div><div  class = 'S2'><div  class = 'S3'><span style=' font-weight: bold;'>Table of Contents</span></div><div  class = 'S4'><a href = "#H_4ADEBAEF"><span>Computing the forward and/or backward projections
</span></a><span>    </span><a href = "#H_E8C79E6D"><span>Class based examples
</span></a><span>    </span><a href = "#H_2F9ED03