Adaptive Movement Compensation for In Vivo Imaging of Fast Cellular Dynamics
Author Information
Author(s): Laffray Sophie, Pagès Stéphane, Dufour Hugues, De Koninck Paul, De Koninck Yves, Côté Daniel
Primary Institution: Université Laval, Québec, Canada
Hypothesis
Can a non-contact adaptive movement compensation system improve imaging of fast cellular dynamics in moving tissue?
Conclusion
The adaptive movement compensation system allows for effective imaging of fast cellular dynamics in live tissue without motion artifacts.
Supporting Evidence
- The system achieved 93±0.8% effective reduction of relative movement with a mirror target and 98±0.8% with spinal cord samples.
- Movement compensation allowed for stable imaging of spinal lamina I neurons in live rats.
- The imaging system maintained a 1 kHz frequency response for position sampling.
- Fluorescence fluctuations were reduced to less than 8% of the initial amplitude with movement compensation ON.
Takeaway
This study shows a new way to take pictures of tiny cells in moving tissues without getting blurry images, which helps scientists see how these cells work in real life.
Methodology
The study used a fast adaptive non-contact device to compensate for tissue movement during two-photon microscopy imaging.
Limitations
The performance of the system is limited by the response time of the piezo nanopositioner.
Participant Demographics
Adult male Wistar rats (250–300 g body weight) were used for the experiments.
Digital Object Identifier (DOI)
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