Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Spectral CT reconstruction with anti-correlated noise model and joint prior
KTH, School of Engineering Sciences (SCI), Physics, Physics of Medical Imaging. (Physics of Medical Imaging)ORCID iD: 0000-0002-5092-8822
KTH, School of Engineering Sciences (SCI), Mathematics (Dept.), Mathematics (Div.).ORCID iD: 0000-0001-9928-3407
2017 (English)Conference paper, Published paper (Other academic)
Abstract [en]

Spectral CT allows reconstructing a set of material selective basis images which can be used for material quantification. These basis images can be reconstructed independently of each other or treated as a joint reconstruction problem. In this work, we investigate the effect of two ways of introducing coupling between the basis images: using an anti-correlated noise model and regularizing the basis images with a joint prior. We simulate imaging of a FORBILD Head phantom with an ideal photon-counting detector and reconstruct the resulting basis sinograms with and without these two kinds of coupling. The results show that the anti-correlated noise model gives better spatial resolution than the uncorrelated noise model at the same noise level, but also introduces artifacts. If anti-correlations are introduced also in the prior, these artifacts are reduced and the resolution is improved further.

Place, publisher, year, edition, pages
2017. p. 580-585
National Category
Medical Image Processing
Identifiers
URN: urn:nbn:se:kth:diva-250643DOI: 10.12059/Fully3D.2017-11-3203027OAI: oai:DiVA.org:kth-250643DiVA, id: diva2:1312941
Conference
Proceedings of the 14th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine
Note

QC 20190520

Available from: 2019-05-01 Created: 2019-05-01 Last updated: 2019-05-20Bibliographically approved

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full text

Authority records BETA

Persson, MatsAdler, Jonas

Search in DiVA

By author/editor
Persson, MatsAdler, Jonas
By organisation
Physics of Medical ImagingMathematics (Div.)
Medical Image Processing

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 2 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf