Cardiovascular Imaging Using Two-Photon Microscopy

Imaging intracellular signaling using two-photon fluorescent lifetime imaging microscopy.

The recent development of Förster resonance energy transfer (FRET) sensors and FRET imaging techniques permits visualization of the dynamics of intracellular signaling events with high spatiotemporal resolution. In particular, fluorescence lifetime imaging in combination with two-photon laser-scanning microscopy (two-photon fluorescence lifetime imaging microscopy [2pFLIM]) is a powerful tool t...

Monitoring Photosensitizer Uptake Using Two Photon Fluorescence Lifetime Imaging Microscopy

Photodynamic Therapy (PDT) provides an opportunity for treatment of various invasive tumors by the use of a cancer targeting photosensitizing agent and light of specific wavelengths. However, real-time monitoring of drug localization is desirable because the induction of the phototoxic effect relies on interplay between the dosage of localized drug and light. Fluorescence emission in PDT may be...

Neural Imaging Using Single-Photon Avalanche Diodes

Introduction: This paper analyses the ability of single-photon avalanche diodes (SPADs) for neural imaging. The current trend in the production of SPADs moves toward the minimumdark count rate (DCR) and maximum photon detection probability (PDP). Moreover, the jitter response which is the main measurement characteristic for the timing uncertainty is progressing. Methods: The neural imaging pro...

Poor man's two photon imaging: Scanning Laser Upconversion Microscopy

Two-photon fluorescence microscopy with differential aberration imaging

We report our progress in the development of Differential Aberration Imaging (DAI), a technique that enhances twophoton fluorescence (TPEF) microscopy by improving rejection of out-of-focus background by means of a deformable mirror (DM). The DM is used to intentionally add aberrations to the imaging system, which causes dramatic losses to in-focus signal while preserving the bulk of the out-of...