The meaning of interior tomography

Area of Science:

• Medical Imaging
• Image Reconstruction
• Computational Imaging

Background:

• Traditional computed tomography (CT) relies on global image reconstruction from un-truncated projections, using non-local Fourier transforms.
• Recent advancements in interior tomography have revealed exact local relationships between projection and image spaces.
• Interior tomography was initially developed for X-ray CT but has since been generalized as an imaging principle.

Purpose of the Study:

• To explore the theoretical exact relationships between local regions in projection and image spaces within interior tomography.
• To present practically promising reconstruction algorithms derived from these local relationships.
• To introduce the concept and development of omni-tomography for fusing multiple imaging modalities.

Main Methods:

• Development of theoretically exact relationships between local projection and image data.
• Implementation of novel reconstruction algorithms based on these local relationships.
• Conceptual framework for omni-tomography integrating diverse imaging modalities.

Main Results:

• Demonstration of theoretically exact local relationships in interior tomography.
• Validation of practically promising reconstruction algorithms for local imaging.
• Establishment of a framework for omni-tomography enabling synchronized multi-modal imaging.

Conclusions:

• Interior tomography offers significant advancements over traditional global CT methods by enabling local image reconstruction.
• The principles of interior tomography are being extended to a broader framework, omni-tomography.
• Omni-tomography promises synchronized imaging across diverse modalities for a comprehensive view of features.