Dear developers,

For DRR image calculation i use a ThreeDCircularProjectionGeometry class with AddProjection method. The default rotation direction is around Y-axis in LPS coordinates (Z-axis in RAS coordinates in 3D Slicer) as i understand from the documentation. Should i calculate rotation matrix manually (using gantry, in-plane, out of plane angles) and then use AddRotationMatrix method to simulate movement of gantry angle around the Y-axis in RAS coordinates (and couch angle rotation around Z-axis in RAS coordinates)? Are there any other options to setup a required axis of rotation of the gantry?

Best regards,

Mikhail


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