Restoring drifted electron microscope volumes using synaptic vesicles at sub-pixel accuracy
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Restoring drifted electron microscope volumes using synaptic vesicles at sub-pixel accuracy. / Stephensen, Hans Jacob Teglbjærg; Darkner, Sune; Sporring, Jon.
In: Communications Biology, Vol. 3, No. 1, ´81, 2020.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Restoring drifted electron microscope volumes using synaptic vesicles at sub-pixel accuracy
AU - Stephensen, Hans Jacob Teglbjærg
AU - Darkner, Sune
AU - Sporring, Jon
PY - 2020
Y1 - 2020
N2 - Imaging ultrastructures in cells using Focused Ion Beam Scanning Electron Microscope (FIB-SEM) yields section-by-section images at nano-resolution. Unfortunately, we observe that FIB-SEM often introduces sub-pixel drifts between sections, in the order of 2.5 nm. The accumulation of these drifts significantly skews distance measures and geometric structures, which standard image registration techniques fail to correct. We demonstrate that registration techniques based on mutual information and sum-of-squared-distances significantly underestimate the drift since they are agnostic to image content. For neuronal data at nano-resolution, we discovered that vesicles serve as a statistically simple geometric structure, making them well-suited for estimating the drift with sub-pixel accuracy. Here, we develop a statistical model of vesicle shapes for drift correction, demonstrate its superiority, and provide a self-contained freely available application for estimating and correcting drifted datasets with vesicles.
AB - Imaging ultrastructures in cells using Focused Ion Beam Scanning Electron Microscope (FIB-SEM) yields section-by-section images at nano-resolution. Unfortunately, we observe that FIB-SEM often introduces sub-pixel drifts between sections, in the order of 2.5 nm. The accumulation of these drifts significantly skews distance measures and geometric structures, which standard image registration techniques fail to correct. We demonstrate that registration techniques based on mutual information and sum-of-squared-distances significantly underestimate the drift since they are agnostic to image content. For neuronal data at nano-resolution, we discovered that vesicles serve as a statistically simple geometric structure, making them well-suited for estimating the drift with sub-pixel accuracy. Here, we develop a statistical model of vesicle shapes for drift correction, demonstrate its superiority, and provide a self-contained freely available application for estimating and correcting drifted datasets with vesicles.
U2 - 10.1038/s42003-020-0809-4
DO - 10.1038/s42003-020-0809-4
M3 - Journal article
C2 - 32081999
VL - 3
JO - Communications Biology
JF - Communications Biology
SN - 2399-3642
IS - 1
M1 - ´81
ER -
ID: 236989955