Poster Open Access

Implementing an exact algorithm for Helical CT:Removing the cone-beam artefacts

Moe, Yngve M.; Lloyd, Ryan; Tregidgo, Henry; Coban, Sophia B.; Gajjar,Parmesh; Behnsen, Julia; Turner, Martin; Lionheart, William R.B.


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  <identifier identifierType="DOI">10.5281/zenodo.61409</identifier>
  <creators>
    <creator>
      <creatorName>Moe, Yngve M.</creatorName>
      <givenName>Yngve M.</givenName>
      <familyName>Moe</familyName>
      <affiliation>University of Manchester</affiliation>
    </creator>
    <creator>
      <creatorName>Lloyd, Ryan</creatorName>
      <givenName>Ryan</givenName>
      <familyName>Lloyd</familyName>
    </creator>
    <creator>
      <creatorName>Tregidgo, Henry</creatorName>
      <givenName>Henry</givenName>
      <familyName>Tregidgo</familyName>
    </creator>
    <creator>
      <creatorName>Coban, Sophia B.</creatorName>
      <givenName>Sophia B.</givenName>
      <familyName>Coban</familyName>
    </creator>
    <creator>
      <creatorName>Gajjar,Parmesh</creatorName>
      <givenName>Parmesh</givenName>
      <familyName>Gajjar</familyName>
    </creator>
    <creator>
      <creatorName>Behnsen, Julia</creatorName>
      <givenName>Julia</givenName>
      <familyName>Behnsen</familyName>
    </creator>
    <creator>
      <creatorName>Turner, Martin</creatorName>
      <givenName>Martin</givenName>
      <familyName>Turner</familyName>
    </creator>
    <creator>
      <creatorName>Lionheart, William R.B.</creatorName>
      <givenName>William R.B.</givenName>
      <familyName>Lionheart</familyName>
    </creator>
  </creators>
  <titles>
    <title>Implementing an exact algorithm for Helical CT:Removing the cone-beam artefacts</title>
  </titles>
  <publisher>Zenodo</publisher>
  <publicationYear>2016</publicationYear>
  <subjects>
    <subject>helical scan</subject>
    <subject>cone beam CT</subject>
    <subject>Katsevick</subject>
    <subject>Nikon Xtek</subject>
    <subject>artefacts</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2016-09-02</date>
  </dates>
  <resourceType resourceTypeGeneral="Text">Poster</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://zenodo.org/record/61409</alternateIdentifier>
  </alternateIdentifiers>
  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/ccpi</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/ipuom</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://zenodo.org/communities/mxif</relatedIdentifier>
  </relatedIdentifiers>
  <rightsList>
    <rights rightsURI="http://creativecommons.org/licenses/by/4.0/legalcode">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">&lt;p&gt;3-dimensional computerised tomography is usually reconstructed using the naïve Feldkamp-Davis-Kress algorithm or FDK, which is not an exact reconstruction algorithm. This caus-&lt;br&gt;
es image errors, or artefacts that appear out of the central slice, and are especially visible near edges between horizontal layers - this is demonstrated in Figure 1.&lt;br&gt;
To overcome these artefacts; one can perform multiple scans at different heights and combine the reconstructed volumes. However, exact reconstruction methods are necessary to&lt;br&gt;
remove them altogether. These algorithms will also reduce the scanning time which makes them very attractive. Such methods exist, and Alexander Katsevich provided an algo-&lt;br&gt;
rithm already in 2002[1]. His algorithm uses a helical scan-geometry, rotating the X-Ray source while moving it in parallel with the rotation axis - or, equivalently, scanning the ob-&lt;br&gt;
ject while rotating it and moving it parallel to its rotation axis. In this poster, we demonstrate that it is possible to perform and reconstruct such scans, with a Nikon XTEK scanner&lt;br&gt;
designed for circular scans.&lt;/p&gt;</description>
    <description descriptionType="Other">{"references": ["Alexander Katsevich. Theoretically exact filtered backprojection-type inversion algorithm for spiral CT. SIAM Journal on Applied Mathematics, 62(6):2012\u20132026, 2002.", "Henry F.J. Tregidgo. The Implementation and analysis of Katsevich Reconstruction for helical CT. MSc. thesis, The University of Manchester, 2013.", "Adam. J. Wunderlich. The Katsevich Inversion Formula for Cone-Beam Computed Tomography. MSc. dissertation, Oregon State University, 2006.21"]}</description>
  </descriptions>
</resource>
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