Reliably calibrating X-ray images required for preoperative planning of THA using a device-adapted magnification factor

• Heinrich Brüggemann ,

  Contributed equally to this work with: Heinrich Brüggemann, Markus Grasmair, Dietmar Hömberg

  Roles Conceptualization, Data curation, Funding acquisition, Investigation, Methodology, Project administration, Validation, Visualization, Writing – original draft, Writing – review & editing

  * E-mail: hbru@sus.no

  Affiliation Department of Orthopedic Surgery, Stavanger University Hospital, Stavanger, Norway

  https://orcid.org/0000-0002-4953-7883

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• Aksel Paulsen,

  Roles Project administration, Supervision, Writing – review & editing

  Affiliations Department of Orthopedic Surgery, Stavanger University Hospital, Stavanger, Norway, Department of Public Health, The Faculty of Health Sciences, University of Stavanger, Stavanger, Norway

  https://orcid.org/0000-0003-1292-4983

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• Ketil Oppedal,

  Roles Supervision, Validation, Writing – review & editing

  Affiliations Radiology Department, Stavanger University Hospital, Stavanger, Norway, Department of Electrical engineering and computer science, University of Stavanger, Stavanger, Norway

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• Markus Grasmair ,

  Contributed equally to this work with: Heinrich Brüggemann, Markus Grasmair, Dietmar Hömberg

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

  Affiliation Department of Mathematical Sciences, Norwegian University of Science and Technology, Trondheim, Norway

  https://orcid.org/0000-0002-6116-5584

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• Dietmar Hömberg

  Contributed equally to this work with: Heinrich Brüggemann, Markus Grasmair, Dietmar Hömberg

  Roles Conceptualization, Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing

  Affiliations Department of Mathematical Sciences, Norwegian University of Science and Technology, Trondheim, Norway, Weierstrass Institute, Berlin, Germany

  https://orcid.org/0000-0001-9460-5729

  ⨯