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Johannes Edvardsson

Johannes Edvardsson

Forskare

Johannes Edvardsson

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

Författare

  • 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.

Avdelning/ar

  • Kvartärgeologi
  • BECC: Biodiversity and Ecosystem services in a Changing Climate

Publiceringsår

2024-08

Språk

Engelska

Publikation/Tidskrift/Serie

Dendrochronologia

Volym

86

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Medical Image Processing

Nyckelord

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

Aktiv

Published

ISBN/ISSN/Övrigt

  • ISSN: 1125-7865