X-ray microtomography-based atlas of mouse cranial development.

Area of Science:

• Developmental Biology
• Medical Imaging
• Morphology

Background:

• X-ray microtomography (μCT) is crucial for non-destructive analysis of biological samples.
• Mouse embryos are key models for studying human developmental diseases, particularly craniofacial abnormalities.
• 3D μCT scans of mouse embryo heads provide morphological data on facial, brain, and sensory organ development.

Purpose of the Study:

• To present a publicly available dataset of 3D μCT scans of developing mouse embryo heads.
• To provide manually segmented masks of specific embryonic structures for enhanced analysis.
• To support research into congenital craniofacial diseases and normal facial development.

Main Methods:

• Acquisition of 7 full 3D scans of mouse embryo heads (ages E12.5-E18.5) using a laboratory-based μCT system.
• Phosphotungstic acid staining to enhance tissue contrast for improved image quality and segmentation.
• Manual segmentation of mesenchymal condensations and nasal capsule cartilage.

Main Results:

• A comprehensive dataset of reusable 3D μCT images of developing mouse heads is now publicly available.
• High-quality manual segmentation masks for nasal capsule cartilage and mesenchymal condensations are provided.
• Enhanced image contrast and precise segmentation were achieved through phosphotungstic acid staining.

Conclusions:

• The presented dataset facilitates the study of various structures within developing mouse heads.
• The high-quality segmented nasal capsule models aid in understanding facial development in mouse models.
• This resource supports research on normal and abnormal craniofacial development.