Compressed sensing for dose reduction in STEM tomography

L. Donati, M. Nilchian, M. Unser, S. Trepout, C. Messaoudi, S. Marcoy

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

Abstract

We designed a complete acquisition-reconstruction framework to reduce the radiation dosage in 3D scanning transmission electron microscopy (STEM). Projection measurements are acquired by randomly scanning a subset of pixels at every tilt-view (i.e., random-beam STEM or 'RB-STEM'). High-quality images are then recovered from the randomly downsampled measurements through a regularized tomographic reconstruction framework. By fulfilling the compressed sensing requirements, the proposed approach improves the reconstruction of heavily-downsampled RB-STEM measurements over the current state-of-the-art technique. This development opens new perspectives in the search for methods permitting lower-dose 3D STEM imaging of electron-sensitive samples without degrading the quality of the reconstructed volume. A Matlab code implementing the proposed reconstruction algorithm has been made available online.

Original languageEnglish
Title of host publication2017 IEEE 14th International Symposium on Biomedical Imaging (ISBI 2017)
EditorsSimon Warfield, Arrete Munoz-Barrutia
Place of PublicationPiscataway NJ USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Pages23-27
Number of pages5
ISBN (Electronic)9781509011711, 9781509011728
ISBN (Print)9781509011735
DOIs
Publication statusPublished - 15 Jun 2017
Externally publishedYes
EventIEEE International Symposium on Biomedical Imaging (ISBI) 2017 - Melbourne Convention and Exhibition Centre, Melbourne, Australia
Duration: 18 Apr 201721 Apr 2017
Conference number: 14th
https://ieeexplore.ieee.org/xpl/conhome/7944115/proceeding (IEEE proceedings)
http://biomedicalimaging.org/2017/

Publication series

NameProceedings - International Symposium on Biomedical Imaging
ISSN (Print)1945-7928
ISSN (Electronic)1945-8452

Conference

ConferenceIEEE International Symposium on Biomedical Imaging (ISBI) 2017
Abbreviated titleISBI 2017
Country/TerritoryAustralia
CityMelbourne
Period18/04/1721/04/17
OtherISBI is a joint initiative from the IEEE Signal Processing Society (SPS) and the IEEE Engineering in Medicine and Biology Society (EMBS). The 2017 meeting will include tutorials, and a scientific program composed of plenary talks, invited special sessions, challenges, as well as oral and poster presentations of peer-reviewed papers.
Internet address

Keywords

  • Compressed sensing
  • Dose reduction
  • Random-beam scanning
  • Regularized reconstruction
  • STEM tomography

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