MSIreg

MSIreg coregisters mass spectrometry images (MS images) and microscopy images of hematoxylin and eosin (H&E) stained tissues to enable joint analysis for pathological characterization and diagnosis.

Key Features:

• Unsupervised Coregistration: Implements a landmark-free workflow for coregistration without manual annotation.
• High-Dimensional MSI Support: Handles MSI experiments where each spatial location is represented by thousands of mass features.
• Quantitative Metrics: Provides quantitative metrics for performance evaluation of coregistration results.
• Large Deformation Handling: Accommodates large global or small local elastic spatial deformations between image modalities.
• Multi-Image Coregistration: Supports simultaneous coregistration of multiple tissue samples, including 29 tissue microarray cores.

Scientific Applications:

• Pathological Tissue Characterization: Assists pathologists in characterizing morphological structure of tissues through joint analysis of MS and H&E images.
• Diagnostic Analysis: Enables diagnostic interpretation by aligning complementary imaging modalities with different aspect ratios, spatial resolutions, and channel numbers.
• Contiguous Tissue Analysis: Facilitates coregistration of contiguous tissues with large deformations for spatially resolved molecular pathology.
• Tissue Microarray Studies: Supports simultaneous coregistration of multiple tissue microarray cores for high-throughput spatial analysis.

Methodology:

MSIreg uses an unsupervised, landmark-free computational approach; specific algorithmic steps are not detailed in the sources.