This project provides a framework for 2D/3D registration using Digitally Reconstructed Topogram (DRT) images, which are generated from 3D CT volumes using a modified version of the Siddon-Jacobs ray casting algorithm.

In addition to DRT generation, the framework extends ITKTwoProjectionRegistration in several key areas, including:

Compliance with IEC 61217
Revised and consistent reference coordinate systems
Improved handling of small transformations via trilinear interpolation of 3D CT voxel intensities, enhancing DRT rendering accuracy when transform magnitudes are below the CT resolution (See the siddonTril branch for implementation details)

Requirements

Work in progress — requirements and example code to be added.

Contributors

Giovanni Fattori
Riccardo Via