Projective light-sheet microscopy with flexible parameter selection.

Area of Science:

• Biophysics
• Optical Microscopy
• Cell Biology

Background:

• Projection imaging in fluorescence microscopy offers speed but suffers from low contrast in multicellular samples due to summed structures and haze.
• Existing methods struggle to selectively image specific sub-volumes or exclude background fluorescence effectively.

Purpose of the Study:

• To introduce and demonstrate a novel rapid projective light-sheet imaging technique with parameter selection (props).
• To enhance contrast, speed, and selectivity in volumetric interrogation of biological samples.
• To enable detailed imaging across various scales, from subcellular to mesoscopic.

Main Methods:

• Developed a projective light-sheet microscopy technique incorporating parameter selection (props) for imaging depth, position, and viewing angle.
• Implemented rapid switching between selected sub-volumes.
• Utilized props to exclude background fluorescence and improve image clarity.

Main Results:

• Successfully applied props for functional imaging in distinct zebrafish brain regions.
• Monitored calcium firing in muscle cells of moving Drosophila larvae with high fidelity.
• Achieved super-resolution imaging of selected cell layers and optically unwrapped curved surfaces of Drosophila embryos.

Conclusions:

• Props significantly accelerates volumetric interrogation in fluorescence microscopy by enabling selective imaging and background exclusion.
• The technique demonstrates versatility across diverse biological applications and scales.
• Props is anticipated to become a valuable tool for advanced microscopy studies.