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Johannes Edvardsson

Johannes Edvardsson

Researcher

Johannes Edvardsson

Dendrochronology with a medical X-ray photon counting computed tomography scanner

Author

  • Håkan Geijer
  • Fleury Ndongozi
  • Johannes Edvardsson

Summary, in English

Dendrochronology traditionally involves invasive techniques that might harm cultural heritage artifacts. Non-invasive approaches using X-ray technology and computed tomography (CT) have emerged, but dedicated CT systems are limited in availability. This study explored the viability of using a recently developed photon counting medical CT scanner for growth ring analysis. Six wood samples from pine, oak and beech with varying growth rates were studied. Comparisons were made between traditional methods and CT scanning with measurements performed on the untreated surface, a prepared surface and on CT images. For samples with annual rings wider than 0.3–0.4 mm, CT scanning performed well, while samples with thinner rings or indistinct ring boundaries presented challenges. The combination of traditional tree-ring measurements and analyses of CT scanned images might be a superior study approach generating extra data and information.

Department/s

  • Quaternary Sciences
  • BECC: Biodiversity and Ecosystem services in a Changing Climate

Publishing year

2024-08

Language

English

Publication/Series

Dendrochronologia

Volume

86

Document type

Journal article

Publisher

Elsevier

Topic

  • Medical Imaging

Keywords

  • Beech
  • Computed tomography
  • Oak
  • Pine
  • Tree rings
  • X-ray

Status

Published

ISBN/ISSN/Other

  • ISSN: 1125-7865