Pipeline for Multi-Scale Three-Dimensional Anatomic Study of the Human Heart

Area of Science:

• Anatomy
• Biomedical Engineering
• Medical Imaging

Background:

• Studying human cardiac anatomy is vital for understanding heart function and disease.
• Non-failing human hearts rejected for transplantation offer a unique resource for detailed structural analysis.
• Existing anatomical studies often lack comprehensive 3D structural insights.

Purpose of the Study:

• To present a detailed protocol for multi-scale structural analysis of the human heart.
• To combine advanced imaging and dissection techniques for comprehensive cardiac anatomy research.
• To elucidate the 3D relationships between coronary vasculature, myocardial innervation, and overall heart architecture.

Main Methods:

• Utilized tissue clearing (3D imaging of solvent-cleared organs) and immunohistochemical staining for microscopic analysis.
• Employed mesoscopic techniques including stereoscopic dissection and micro-computed tomographic (CT) scanning.
• Incorporated macroscopic methods such as gross dissection, photography, CT, and 3D printing, with optional pressure-perfusion fixation.

Main Results:

• Demonstrated the successful application of combined techniques for detailed human heart structural analysis.
• Provided representative results illustrating the capabilities of the described methodologies.
• Highlighted the ability to visualize and analyze complex 3D relationships within the human heart.

Conclusions:

• The presented protocol offers a unique and comprehensive approach to human cardiac anatomy research.
• Combining microscopic, mesoscopic, and macroscopic techniques provides unprecedented insights into heart structure.
• This methodology is crucial for advancing our understanding of cardiac anatomy and its relation to function.