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- W2017295289 abstract "Abstract Background: Wide‐field frequency‐domain fluorescence lifetime imaging microscopy (FLIM) is an established technique to determine fluorescence lifetimes. Disadvantage of wide‐field imaging is that measurements are compromised by out‐of‐focus blur. Conventional scanning confocal typically means long acquisition times and more photo bleaching. An alternative is spinning‐disc confocal whereby samples are scanned simultaneously by thousands of pinholes, resulting in a virtually instantaneous image with more than tenfold reduced photo bleaching. Methods: A spinning disc unit was integrated into an existing FLIM system. Measurements were made of fluorescent beads with a lifetime of 2.2 ns against a 5.3 ns fluorescent background outside the focal plane. In addition, living HeLa cells were imaged with different lifetimes in the cytosol and the plasma membrane. Results: In spinning‐disc mode, a lifetime of the beads of 2.8 ns was measured, whereas in wide field a lifetime of 4.1 ns was measured. Lifetime contrast within living HeLa cells could be resolved with the spinning‐disc unit, where this was impossible in wide field. Conclusions: Integration of a spinning‐disc unit into a frequency‐domain FLIM instrument considerably reduces artifacts, while maintaining the advantages of wide field. For FLIM on objects with 3D lifetime structure, spinning‐disc is by far preferable over wide‐field measurements. © 2007 International Society for Analytical Cytology." @default.
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- W2017295289 date "2007-01-31" @default.
- W2017295289 modified "2023-10-17" @default.
- W2017295289 title "Combination of a spinning disc confocal unit with frequency‐domain fluorescence lifetime imaging microscopy" @default.
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- W2017295289 doi "https://doi.org/10.1002/cyto.a.20379" @default.
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