Neuronal imaging with ultrahigh dynamic range multiphoton microscopy

Multiphoton microscopes are hampered by limited dynamic range, preventing weak sample features from being detected in the presence of strong features, or preventing the capture of unpredictable bursts in sample strength. We present a digital electronic add-on technique that vastly improves the dynam...

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Bibliographic Details
Published in:Scientific reports 2017-07, Vol.7 (1), p.5817-7, Article 5817
Main Authors: Yang, Ruohui, Weber, Timothy D., Witkowski, Ellen D., Davison, Ian G., Mertz, Jerome
Format: Article
Language:English
Subjects:
14/69
631/1647/245/2226
639/624/1107/328/2057
Animals
Brain - anatomy & histology
Feedback
Field programmable gate arrays
Humanities and Social Sciences
Imaging, Three-Dimensional
Lasers
Medical imaging
Mice
Microscopes
Microscopy
Microscopy, Fluorescence, Multiphoton - methods
multidisciplinary
Neuroimaging
Neurons - cytology
Noise
Science
Science (multidisciplinary)
Sensors
Signal-To-Noise Ratio
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Summary:Multiphoton microscopes are hampered by limited dynamic range, preventing weak sample features from being detected in the presence of strong features, or preventing the capture of unpredictable bursts in sample strength. We present a digital electronic add-on technique that vastly improves the dynamic range of a multiphoton microscope while limiting potential photodamage. The add-on provides real-time negative feedback to regulate the laser power delivered to the sample, and a log representation of the sample strength to accommodate ultrahigh dynamic range without loss of information. No microscope hardware modifications are required, making the technique readily compatible with commercial instruments. Benefits are shown in both structural and in-vivo functional mouse brain imaging applications.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-017-06065-7