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Frikel, J. ; Quinto, E.T.*

Characterization and reduction of artifacts in limited angle tomography.

Inverse Probl. 29:125007 (2013)
Open Access Green as soon as Postprint is submitted to ZB.
We consider the reconstruction problem for limited angle tomography using filtered backprojection (FBP) and lambda tomography. We use microlocal analysis to explain why the well-known streak artifacts are present at the end of the limited angular range. We explain how to mitigate the streaks and prove that our modified FBP and lambda operators are standard pseudodifferential operators, and so they do not add artifacts. We provide reconstructions to illustrate our mathematical results.
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Publication type Article: Journal article
Document type Scientific Article
Keywords X-ray Transform ; Local Tomography ; Image-reconstruction ; Tomosynthesis ; Inversion ; Space
ISSN (print) / ISBN 0266-5611
e-ISSN 1361-6420
Quellenangaben Volume: 29, Issue: 12, Pages: , Article Number: 125007 Supplement: ,
Publisher Institute of Physics Publishing (IOP)
Reviewing status Peer reviewed