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Timothy Ragan

Researcher at Massachusetts Institute of Technology

Publications -  18
Citations -  1174

Timothy Ragan is an academic researcher from Massachusetts Institute of Technology. The author has contributed to research in topics: Cytometry & Two-photon excitation microscopy. The author has an hindex of 11, co-authored 15 publications receiving 1072 citations. Previous affiliations of Timothy Ragan include University of Illinois at Urbana–Champaign.

Papers
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Journal ArticleDOI

Serial two-photon tomography for automated ex vivo mouse brain imaging

TL;DR: An automated method is described that achieves high-throughput fluorescence imaging of mouse brains by integrating two-photon microscopy and tissue sectioning, which opens the door to routine systematic studies of neuroanatomy in mouse models of human brain disorders.
Journal ArticleDOI

Multifocal multiphoton microscopy based on multianode photomultiplier tubes.

TL;DR: It is demonstrated that MAPMT-based MMM has imaging depth comparable to SMM with equivalent sensitivity by imaging tissue phantoms, ex vivo human skin specimens based on endogenous fluorophores, and green fluorescent protein (GFP) expressing neurons in mouse brain slices.
Patent

Systems and methods for volumetric tissue scanning microscopy

TL;DR: In this article, the authors present a method for imaging tissue, which includes the steps of mounting the tissue on a computer controlled stage of a microscope, determining volumetric imaging parameters, directing at least two photons into a region of interest, scanning the regions of interest across a portion of tissue, imaging a plurality of layers of the tissue in a plurality volume of the volume of interest and detecting a fluorescence image of tissue due to said excitation light.
Patent

Multifocal imaging systems and method

TL;DR: In this paper, a multianode photomultiplier tube (MAPMT) is used for high-speed tissue imaging, where the emission photons from the array of excitation foci are collected simultaneously by a MAPMT and the signals from each anode are detected using high sensitivity, low noise single photon counting circuits.
Journal ArticleDOI

High-resolution whole organ imaging using two-photon tissue cytometry

TL;DR: Two-photon tissue cytometry is a novel technique based on high-speed multiphoton microscopy coupled with automated histological sectioning, which can quantify tissue morphology and physiology throughout entire organs with subcellular resolution.