Optically Gated Beating-heart Imaging
Overview
Authors
Affiliations
The constant motion of the beating heart presents an obstacle to clear optical imaging, especially 3D imaging, in small animals where direct optical imaging would otherwise be possible. Gating techniques exploit the periodic motion of the heart to computationally "freeze" this movement and overcome motion artifacts. Optically gated imaging represents a recent development of this, where image analysis is used to synchronize acquisition with the heartbeat in a completely non-invasive manner. This article will explain the concept of optical gating, discuss a range of different implementation strategies and their strengths and weaknesses. Finally we will illustrate the usefulness of the technique by discussing applications where optical gating has facilitated novel biological findings by allowing 3D in vivo imaging of cardiac myocytes in their natural environment of the beating heart.
Marelli F, Ernst A, Mercader N, Liebling M Biol Imaging. 2024; 3:e20.
PMID: 38510170 PMC: 10951931. DOI: 10.1017/S2633903X23000223.
Kuo C, Pratiwi F, Liu Y, Chueh D, Chen P Front Bioeng Biotechnol. 2022; 10:935415.
PMID: 36051583 PMC: 9424828. DOI: 10.3389/fbioe.2022.935415.
Pico-washing: simultaneous liquid addition and removal for continuous-flow washing of microdroplets.
Siedlik M, Issadore D Microsyst Nanoeng. 2022; 8:46.
PMID: 35498338 PMC: 9050730. DOI: 10.1038/s41378-022-00381-3.
A versatile, multi-laser twin-microscope system for light-sheet imaging.
Keomanee-Dizon K, Fraser S, Truong T Rev Sci Instrum. 2020; 91(5):053703.
PMID: 32486724 PMC: 7255815. DOI: 10.1063/1.5144487.
Yue Y, Zong W, Li X, Li J, Zhang Y, Wu R Nat Cell Biol. 2020; 22(3):332-340.
PMID: 32123336 DOI: 10.1038/s41556-020-0475-2.