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Four dimensional material movies : High speed phase-contrast tomography by backprojection along dynamically curved paths

Ruhlandt, A.; Töpperwien, M.; Krenkel, M.; Mokso, R. LU and Salditt, Tim (2017) In Scientific Reports 7(1).
Abstract

We present an approach towards four dimensional (4d) movies of materials, showing dynamic processes within the entire 3d structure. The method is based on tomographic reconstruction on dynamically curved paths using a motion model estimated by optical flow techniques, considerably reducing the typical motion artefacts of dynamic tomography. At the same time we exploit x-ray phase contrast based on free propagation to enhance the signal from micron scale structure recorded with illumination times down to a millisecond (ms). The concept is demonstrated by observing the burning process of a match stick in 4d, using high speed synchrotron phase contrast x-ray tomography recordings. The resulting movies reveal the structural changes of the... (More)

We present an approach towards four dimensional (4d) movies of materials, showing dynamic processes within the entire 3d structure. The method is based on tomographic reconstruction on dynamically curved paths using a motion model estimated by optical flow techniques, considerably reducing the typical motion artefacts of dynamic tomography. At the same time we exploit x-ray phase contrast based on free propagation to enhance the signal from micron scale structure recorded with illumination times down to a millisecond (ms). The concept is demonstrated by observing the burning process of a match stick in 4d, using high speed synchrotron phase contrast x-ray tomography recordings. The resulting movies reveal the structural changes of the wood cells during the combustion.

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Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
in
Scientific Reports
volume
7
issue
1
publisher
Nature Publishing Group
external identifiers
  • scopus:85026426404
ISSN
2045-2322
DOI
10.1038/s41598-017-06333-6
language
English
LU publication?
no
id
b34b9084-4cd2-4d28-81c9-ab800f904825
date added to LUP
2017-09-19 14:33:52
date last changed
2018-01-07 12:19:01
@article{b34b9084-4cd2-4d28-81c9-ab800f904825,
  abstract     = {<p>We present an approach towards four dimensional (4d) movies of materials, showing dynamic processes within the entire 3d structure. The method is based on tomographic reconstruction on dynamically curved paths using a motion model estimated by optical flow techniques, considerably reducing the typical motion artefacts of dynamic tomography. At the same time we exploit x-ray phase contrast based on free propagation to enhance the signal from micron scale structure recorded with illumination times down to a millisecond (ms). The concept is demonstrated by observing the burning process of a match stick in 4d, using high speed synchrotron phase contrast x-ray tomography recordings. The resulting movies reveal the structural changes of the wood cells during the combustion.</p>},
  articleno    = {6487},
  author       = {Ruhlandt, A. and Töpperwien, M. and Krenkel, M. and Mokso, R. and Salditt, Tim},
  issn         = {2045-2322},
  language     = {eng},
  month        = {12},
  number       = {1},
  publisher    = {Nature Publishing Group},
  series       = {Scientific Reports},
  title        = {Four dimensional material movies : High speed phase-contrast tomography by backprojection along dynamically curved paths},
  url          = {http://dx.doi.org/10.1038/s41598-017-06333-6},
  volume       = {7},
  year         = {2017},
}