9 March 2016 Adaptive optics microscopy enhances image quality in deep layers of CLARITY processed brains of YFP-H mice
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Abstract
Optical sectioning of biological tissues has become the method of choice for three-dimensional histological analyses. This is particularly important in the brain were neurons can extend processes over large distances and often whole brain tracing of neuronal processes is desirable. To allow deeper optical penetration, which in fixed tissue is limited by scattering and refractive index mismatching, tissue-clearing procedures such as CLARITY have been developed. CLARITY processed brains have a nearly uniform refractive index and three-dimensional reconstructions at cellular resolution have been published. However, when imaging in deep layers at submicron resolution some limitations caused by residual refractive index mismatching become apparent, as the resulting wavefront aberrations distort the microscopic image. The wavefront can be corrected with adaptive optics. Here, we investigate the wavefront aberrations at different depths in CLARITY processed mouse brains and demonstrate the potential of adaptive optics to enable higher resolution and a better signal-to-noise ratio. Our adaptive optics system achieves high-speed measurement and correction of the wavefront with an open-loop control using a wave front sensor and a deformable mirror. Using adaptive optics enhanced microscopy, we demonstrate improved image quality wavefront, point spread function, and signal to noise in the cortex of YFP-H mice.
Conference Presentation
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Marc R. Reinig, Marc R. Reinig, Samuel W. Novack, Samuel W. Novack, Xiaodong Tao, Xiaodong Tao, Florian Ermini, Florian Ermini, Laurent A. Bentolila, Laurent A. Bentolila, Dustin G. Roberts, Dustin G. Roberts, Allan MacKenzie-Graham, Allan MacKenzie-Graham, S. E. Godshalk, S. E. Godshalk, M. A. Raven, M. A. Raven, Joel Kubby, Joel Kubby, "Adaptive optics microscopy enhances image quality in deep layers of CLARITY processed brains of YFP-H mice", Proc. SPIE 9690, Clinical and Translational Neurophotonics; Neural Imaging and Sensing; and Optogenetics and Optical Manipulation, 969008 (9 March 2016); doi: 10.1117/12.2213283; https://doi.org/10.1117/12.2213283
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