Registration of

Digital X-ray

images By Habib Baluwala

Chest X-ray Applications

Screening

Diagnosis

Treatment planning

Treatment Follow-up

Challenges Projection of 3D image to 2D image

Sensitivity to equipment and other factors Poorer penetration of X-ray

Respiratory motion

Heart motion

Pathological influences Tumour growth

Lung collapse or effusion

Tracheal deviation

Image noise (Quantum Noise)

Metal artifacts from Pacemakers

Image Processing technique

Image post-processing

Gray scale processing

Edge Enhancement

Multi-frequency processing

Automatic Organ segmentation

Lung segmentation

Bone segmentation

Ribs and Clavicles

Recommended Solutions Combining segmentation and registration into a single framework

Multiresolution rigid registration of the segmented lungs followed by few steps of non-rigid registration of the lungs to compensate for the breathing motion

If Lung is collapsed or a huge mismatch between the lungs then register the images using the same steps taking bone/ribs as the reference.

Intensity invariant similarity functions

Topology preservation

Lung motion modeling

Final Words

Other ways to contact me : Email : habibbaluwala@gmail.com