Imaging the Beating Heart with Macroscopic Phase Stamping

TL;DR

This paper introduces a new imaging technique that combines high-resolution and low-resolution channels to accurately reconstruct the 3D beating heart in zebrafish embryos, capturing detailed cellular dynamics throughout the cycle.

Contribution

A novel macroscopic phase stamping method that integrates dual-channel imaging for comprehensive 3D heart imaging in live embryonic models.

Findings

Successfully imaged the entire zebrafish embryonic heart over its full cycle.

Achieved sub-cellular resolution in dynamic cellular behavior.

Demonstrated accurate phase determination for 3D reconstruction.

Abstract

We present a novel approach for imaging the beating embryonic heart, based on combining two independent imaging channels to capture the full spatio-temporal information of the moving 3D structure. High-resolution, optically-sectioned image recording is accompanied by simultaneous acquisition of low-resolution, whole-heart recording, allowing the latter to be used in post-acquisition processing to determine the macroscopic spatio-temporal phase of the heart beating cycle. Once determined, or 'stamped', the phase information common to both imaging channels is used to reconstruct the 3D beating heart. We demonstrated our approach in imaging the beating heart of the zebrafish embryo, capturing the entire heart over its full beating cycle, and characterizing cellular dynamic behavior with sub-cellular resolution.